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ASTM A450/A450M-96a(2001)

(Specification)

Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes

Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes

SCOPE
1.1 This specification covers a group of requirements which, with the exceptions of 4.3 and Sections 5, 6, 17, 18, 19, 20, 21, 22, and 23, are mandatory requirements to the following ASTM tubular product specifications:Title of SpecificationASTM DesignationSeamless Low-Carbon and Carbon-Molybdenum Steel Still Tubes for Refinery Service A 161Electric-Resistance-Welded Carbon Steel and Carbon Manganese Steel Boiler TubesA 178/A 178M Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes A 179/A 179MSeamless Carbon Steel Boiler Tubes for High-Pressure ServiceA 192/A 192M Seamless Cold-Drawn Intermediate Alloy-Steel Heat-Exchanger and Condenser TubesA 199/A 199M Seamless Intermediate Alloy-Steel Still Tubes for Refinery ServiceA 200 Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater TubesA 209/A 209M Seamless Medium-Carbon Steel Boiler and Superheater TubesA 210/A 210M Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes A 213/A 213MElectric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser TubesA 214/A 214M Electric-Resistance-Welded Carbon Steel Boiler and Superheater Tubes for High-Pressure ServiceA 226/A 226MWelded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser TubesA 249/A 249M Electric-Resistance-Welded Ferritic Alloy-Steel Boiler and Superheater Tubes A 250/A 250MSeamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service A 268/A 268M Seamless and Welded Austenitic Stainless Steel Tubing for General ServiceA 269 Seamless and Welded Austenitic Stainless Steel Sanitary TubingA 270 Seamless Austenitic Chromium-Nickel Steel Still Tubes for Refinery ServiceA 271 Seamless and Welded Carbon and Alloy-Steel Tubes forLow-Temperature Service A 334/A 334M Seamless and Electric-Welded Low-Alloy Steel Tubes A 423/A 423MElectric-Resistance-Welded Coiled Steel Tubing for Gas and Fuel Oil Lines A 539 Seamless Cold-Drawn Carbon Steel Feedwater Heater TubesA 556/A 556MElectric-Resistance-Welded Carbon Steel Feedwater Heater TubesA 557/A 557M Welded Austenitic Stainless Steel Feedwater Heater TubesA 688/A 688M Seamless Medium-Strength Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes A 692Austenitic Stainless Steel Tubing for Breeder Reactor Core ComponentsA 771Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service A 789/A 789MWelded Unannealed Ferritic Stainless Steel TubingA 791/A 791M Welded Ferritic Stainless Steel Feedwater Heater Tubes A 803/A 803M Seamless, Cold-Drawn Carbon Steel Tubing for Hydrau-lic System ServiceA 822Austenitic and Ferritic Stainless Steel Duct Tubes for Breeder Reactor Core ComponentsA 826High-Frequency Induction Welded, Unannealed Austenitic Steel Condenser TubesA 851 A These designations refer to the latest issue of the respective specifications.  
1.2 One or more of Sections 4.3, 5, 6, 17, 18, 19, 20, 20.1, 22, and 23 apply when the product specification or purchase order has a requirement for the test or analysis described by these sections.
1.3 In case of conflict between a requirement of the product specification and a requirement of this general requirement specification only the requirement of the product specification need be satisfied.
1.4 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation (SI) of the product specification is specified in the order.

General Information

Status
Historical
Publication Date
09-Oct-1996
ICS
23.040.10 - Iron and steel pipes
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.09 - Carbon Steel Tubular Products
Current Stage
Ref Project

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ASTM A450/A450M-96a(2001) - Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel TubesASTM A450/A450M-96a(2001) - Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
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ASTM A450/A450M-96a(2001) - Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
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REDLINE ASTM A450/A450M-96a(2001) - Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel TubesREDLINE ASTM A450/A450M-96a(2001) - Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
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REDLINE ASTM A450/A450M-96a(2001) - Standard Specification for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes
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Standards Content (Sample)

Designation: A 450/A 450M – 96a (Reapproved 2001) An American National Standard
Standard Specification for
General Requirements for Carbon, Ferritic Alloy, and
1
Austenitic Alloy Steel Tubes
This standard is issued under the fixed designation A 450/A 450M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
Seamless Austenitic Chromium-Nickel Steel Still Tubes A 271
for Refinery Service
2
1.1 This specification covers a group of requirements
Seamless and Welded Carbon and Alloy-Steel Tubes A 334/A 334M
which, with the exceptions of 4.3 and Sections 5, 6, 17, 18, 19, forLow-Temperature Service
Seamless and Electric-Welded Low-Alloy Steel Tubes A 423/A 423M
20, 21, 22, and 23, are mandatory requirements to the follow-
Electric-Resistance-Welded Coiled Steel Tubing for A 539
3
ing ASTM tubular product specifications:
Gas and Fuel Oil Lines
Seamless Cold-Drawn Carbon Steel Feedwater Heater A 556/A 556M
ASTM
A
Title of Specification Designation Tubes
Electric-Resistance-Welded Carbon Steel Feedwater A 557/A 557M
Heater Tubes
Welded Austenitic Stainless Steel Feedwater Heater A 688/A 688M
Seamless Low-Carbon and Carbon-Molybdenum Steel A 161
Tubes
Still Tubes for Refinery Service
Seamless Medium-Strength Carbon-Molybdenum Alloy- A 692
Electric-Resistance-Welded Carbon Steel and Carbon A 178/A 178M
Steel Boiler and Superheater Tubes
Manganese Steel Boiler Tubes
Austenitic Stainless Steel Tubing for Breeder Reactor A 771
Seamless Cold-Drawn Low-Carbon Steel Heat- A 179/A 179M
Core Components
Exchanger and Condenser Tubes
Seamless and Welded Ferritic/Austenitic Stainless A 789/A 789M
Seamless Carbon Steel Boiler Tubes for High-Pressure A 192/A 192M
Steel Tubing for General Service
Service
Seamless Cold-Drawn IntermediateAlloy-Steel Heat- A 199/A 199M Welded Unannealed Ferritic Stainless Steel Tubing A 791/A 791M
Welded Ferritic Stainless Steel Feedwater Heater A 803/A 803M
Exchanger and Condenser Tubes
Seamless Intermediate Alloy-Steel Still Tubes for Refin- A 200 Tubes
Seamless, Cold-Drawn Carbon Steel Tubing for A 822
eryService
Seamless Carbon-Molybdenum Alloy-Steel Boiler and A 209/A 209M Hydrau-lic System Service
Austenitic and Ferritic Stainless Steel Duct Tubes for A 826
Superheater Tubes
Seamless Medium-Carbon Steel Boiler and Super- A 210/A 210M Breeder Reactor Core Components
High-Frequency Induction Welded, Unannealed Auste- A 851
heater Tubes
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Su- A 213/A 213M nitic Steel Condenser Tubes
perheater, and Heat-Exchanger Tubes
A
These designations refer to the latest issue of the respective specifications.
Electric-Resistance-Welded Carbon Steel Heat- A 214/A 214M
Exchanger and Condenser Tubes
1.2 One or more of Sections 4.3, 5, 6, 17, 18, 19, 20, 20.1,
Electric-Resistance-Welded Carbon Steel Boiler and A 226/A 226M
Superheater Tubes for High-Pressure Service
22, and 23 apply when the product specification or purchase
Welded Austenitic Steel Boiler, Superheater, Heat- A 249/A 249M
order has a requirement for the test or analysis described by
Exchanger, and Condenser Tubes
these sections.
Electric-Resistance-Welded Ferritic Alloy-Steel Boiler A 250/A 250M
and Superheater Tubes
1.3 In case of conflict between a requirement of the product
Seamless and Welded Ferritic and Martensitic Stain- A 268/A 268M
specification and a requirement of this general requirement
less Steel Tubing for General Service
specification only the requirement of the product specification
Seamless and Welded Austenitic Stainless Steel Tub- A 269
ing for General Service
need be satisfied.
Seamless and Welded Austenitic Stainless Steel Sani- A 270
1.4 The values stated in either inch-pound units or SI units
tary Tubing
are to be regarded separately as standard. Within the text, the
SI units are shown in brackets. The values stated in each
system are not exact equivalents; therefore, each system must
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
be used independently of the other. Combining values from the
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
two systems may result in nonconformance with the specifi-
A01.09 on Carbon Steel Tubular Products.
Current edition approved October 10, 1996. Published November 1997. Origi-
cation. The inch-pound units shall apply unless the “M”
nally published as A 450 – 61 T. Last previous edition A 450/A 450M – 96.
designation (SI) of the product specification is specified in the
2
For ASME Boiler and Pressure Vessel Code applications see related Specifi-
order.
cation SA-450 in Section II of that Code.
3
Annual Book of ASTM Standards, Vols 01.01 and 01.04.
Copyright
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
An American National Standard
Designation:A 450/A 450M–96a Designation: A 450/A 450M – 96a (Reapproved 2001)
Standard Specification for
General Requirements for Carbon, Ferritic Alloy, and
1
Austenitic Alloy Steel Tubes
This standard is issued under the fixed designationA 450/A 450M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
2
1.1 This specification covers a group of requirements which, with the exceptions of 4.3 and Sections 5, 6, 17, 18, 19, 20, 21,
3
22, and 23, are mandatory requirements to the following ASTM tubular product specifications:
ASTM
A
Title of Specification Designation
Seamless Low-Carbon and Carbon-Molybdenum Steel A 161
Still Tubes for Refinery Service
Electric-Resistance-Welded Carbon Steel and Carbon A 178/A 178M
Manganese Steel Boiler Tubes
Seamless Cold-Drawn Low-Carbon Steel Heat- A 179/A 179M
Exchanger and Condenser Tubes
Seamless Carbon Steel Boiler Tubes for High-Pressure A 192/A 192M
Service
Seamless Cold-Drawn IntermediateAlloy-Steel Heat- A 199/A 199M
Exchanger and Condenser Tubes
Seamless Intermediate Alloy-Steel Still Tubes for Refin- A 200
eryService
Seamless Carbon-Molybdenum Alloy-Steel Boiler and A 209/A 209M
Superheater Tubes
Seamless Medium-Carbon Steel Boiler and Super- A 210/A 210M
heater Tubes
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Su- A 213/A 213M
perheater, and Heat-Exchanger Tubes
Electric-Resistance-Welded Carbon Steel Heat- A 214/A 214M
Exchanger and Condenser Tubes
Electric-Resistance-Welded Carbon Steel Boiler and A 226/A 226M
Superheater Tubes for High-Pressure Service
Welded Austenitic Steel Boiler, Superheater, Heat- A 249/A 249M
Exchanger, and Condenser Tubes
Electric-Resistance-Welded Ferritic Alloy-Steel Boiler A 250/A 250M
and Superheater Tubes
Seamless and Welded Ferritic and Martensitic Stain- A 268/A 268M
less Steel Tubing for General Service
Seamless and Welded Austenitic Stainless Steel Tub- A 269
ing for General Service
Seamless and Welded Austenitic Stainless Steel Sani- A 270
tary Tubing
Seamless Austenitic Chromium-Nickel Steel Still Tubes A 271
for Refinery Service
Seamless and Welded Carbon and Alloy-Steel Tubes A 334/A 334M
forLow-Temperature Service
Seamless and Electric-Welded Low-Alloy Steel Tubes A 423/A 423M
Electric-Resistance-Welded Coiled Steel Tubing for A 539
Gas and Fuel Oil Lines
Seamless Cold-Drawn Carbon Steel Feedwater Heater A 556/A 556M
Tubes
1
This specification is under the jurisdiction of ASTM Committee A-1 A01 on Steel, Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
A01.09 on Carbon Steel Tubular Products.
Current edition approved October 10, 1996. Published November 1997. Originally published as A 450 – 61 T. Last previous edition A 450/A 450M – 96.
2
For ASME Boiler and Pressure Vessel Code applications see related Specification SA-450 in Section II of that Code.
3
Annual Book of ASTM Standards, Vols 01.01 and 01.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
A 450/A 450M – 96a (2001)
Electric-Resistance-Welded Carbon Steel Feedwater A 557/A 557M
Heater Tubes
Welded Austenitic Stainless Steel Feedwater Heater A 688/A 688M
Tubes
Seamless Medium-Strength Carbon-Molybdenum Alloy- A 692
Steel Boiler and Superheater Tubes
Austenitic Stainless Steel Tubing for Breeder Reactor A 771
Core Components
Seamless and Welded Ferritic/Austenitic Stainless A 789/A 789M
Steel Tubing for General Service
Welded Unannealed Ferritic Stainless Steel Tubing A 791/A 791M
Welded Ferritic Stainless Steel Feedwater Heater A 803/A 803M
Tubes
Seamless, Cold-Drawn Carbon Steel Tubing for A 822
Hydrau-lic System Service
Austenitic and Ferritic Stainless Steel Duct Tubes for A 826
Breeder Reactor Core Components
High-Frequency Induction Welded, Unannealed Auste- A 851
nitic Steel Condenser Tubes
A
These designations refer to the latest issue of the respective specifications.
1.2 One or more of Sections 4.3, 5, 6, 17, 18, 19, 20, 20.1, 22, and 23 apply when the product specification or purchase order
has a requirement for the test or analysis described by these sections.
1.3 In case of conflict between
...

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Standard Specification for Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Service

ABSTRACT
This guide specifies standard specification for heavy-wall carbon and alloy steel pipe made from turned and bored forgings and is intended for high-temperature service. Heat and product analysis shall be conducted on several grades of ferritic steels, wherein the material shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, chromium, and molybdenum. The steel pipe shall conform to the required tensile properties like tensile strength, yield strength, and elongation. Required mechanical tests for the steel pipe include transverse or longitudinal tension test, flattening test, and bend test.
SCOPE
1.1 This specification2 covers heavy-wall carbon and alloy steel pipe (Note 1) made from turned and bored forgings and is intended for high-temperature service. Pipe ordered under this specification shall be suitable for bending and other forming operations and for fusion welding. Selection will depend on design, service conditions, mechanical properties and high-temperature characteristics.
Note 1: The use of the word “pipe” throughout the several sections of this specification is used in the broad sense and intended to mean pipe headers, or leads.
Note 2: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”  
1.2 Several grades of ferritic steels are covered. Their compositions are given in Table 1.    
1.3 Supplementary requirements (S1 to S7) of an optional nature are provided. Supplementary requirements S1 to S5 call for additional tests to be made, and when desired shall be so stated in the order, together with the number of such tests required as applicable.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM A1119/A1119M-23a(Specification)
Standard Specification for Welded Partially Corrugated Stainless Steel Tube for Potable Water and General Service

SCOPE
1.1 This specification describes welded austenitic, ferritic, and duplex stainless steel tube on which the external and internal surface has been modified by a cold forming process to produce an intermittent corrugation for improved formability and resistance to seismic and other environmental distortions. The tubes are used for potable water service lines and other liquid delivery systems in nominal diameters from 1/2 to 2 in. [13 to 50 mm].  
1.2 The tube sizes and thicknesses usually furnished to this specification are 0.625 to 2.125 in. [15.88 to 48.60 mm], outside diameter and 0.028 to 0.049 in. [0.8 to 1.2 mm], inclusive, in wall thickness.  
1.3 The grades of austenitic, ferritic, and duplex stainless steels included in this specification shall conform to materials listed in the governing straight tube Specifications A268/A268M, A269/A269M, or A789/A789M. Selection will depend upon design and service requirements.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.5 This specification is expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished in inch-pound units.  
1.6 The following safety hazards statement pertains only to the test methods of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM A790/A790M-23(Specification)
Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe

ABSTRACT
The specification covers seamless and straight-seam welded ferritic/austenitic steel pipe for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. The pipe shall be made by the seamless or an automatic welding process, with no addition of filler metal in the welding operation. Heat analysis shall be made to determine the percentages of the elements specified. Tension tests, hardening tests, flattening tests, hydrostatic tests and nondestructive electric tests shall be made to conform to the specified requirements.
SCOPE
1.1 This specification2 covers seamless and straight-seam welded ferritic/austenitic steel pipe intended for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.  
1.2 Optional supplementary requirements are provided for pipe when a greater degree of testing is desired. These supplementary requirements call for additional tests to be made and, when desired, one or more of these may be specified in the order.  
1.3 Appendix X1 of this specification lists the dimensions of welded and seamless stainless steel pipe as shown in ANSI B36.19. Pipe having other dimensions may be furnished provided such pipe complies with all other requirements of this specification.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the M designation of this specification is specified in the order.  
Note 1: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as nominal diameter, size, and nominal size.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM A213/A213M-23(Specification)
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

ABSTRACT
This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. Grades containing the letter H in their designation have requirements different from those of similar grades not containing the letter H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements. The tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified. Grade TP347HFG shall be cold finished. Heat treatment shall be done separately and in addition to heating for hot forming. The ferritic alloy and ferritic stainless steels shall be reheated. On the other hand, austenitic stainless steel tubes shall be furnished in the heat-treated condition. Alternatively, immediately after hot forming, while the temperature of the tubes is not less than the minimum solution temperature, tubes may be individually quenched in water or rapidly cooled by other means. Tension test, hardness test, flattening test, and flaring test shall be done to each tube. Also, each tube shall be subjected to the nondestructive electric test or hydrostatic test.
SCOPE
1.1 This specification2 covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes, designated Grades T5, TP304, etc. These steels are listed in Tables 1 and 2.    
1.2 Grades containing the letter, H, in their designation, have requirements different from those of similar grades not containing the letter, H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements.  
1.3 The tubing sizes and thicknesses usually furnished to this specification are 1/8 in. [3.2 mm] in inside diameter to 5 in. [127 mm] in outside diameter and 0.015 to 0.500 in. [0.4 to 12.7 mm], inclusive, in minimum wall thickness or, if specified in the order, average wall thickness. Tubing having other diameters may be furnished, provided such tubes comply with all other requirements of this specification.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM A270/A270M-23(Specification)
Standard Specification for Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubing

ABSTRACT
This specification covers grades of seamless, welded, and heavily cold worked austenitic and ferritic/austenitic stainless steel sanitary tubing. Seamless tubes shall be manufactured by a process that does not involve welding at any stage. Welded tubes shall be made using an automated welding process with no addition of filler metal during the welding process. Heavily cold worked tubes shall be made by applying cold working of not less than 35% reduction of thickness of both wall and weld to a welded tube prior to the final anneal. No filler shall be used in making the weld. All material shall be furnished in the heat-treated condition. A chemical analysis of either one length of flat-rolled stock or one tube shall be made for each heat. Each tube shall be subjected to mechanical tests like reverse flattening test, hydrostatic test or nondestructive electric test. The following surface finishes may be specified: mill finish, mechanically polished surface finish, finish No. 80, finish No. 120, finish No. 180, finish No. 240, electropolished finish, and maximum roughness average surface finish. Longitudinally polished finish shall be performed on the inside surface only while a circumferential polished finish shall be done on either the inside surface, outside surface, or both.
SCOPE
1.1 This specification covers grades of seamless, welded, and heavily cold worked welded austenitic and ferritic/austenitic stainless steel sanitary tubing intended for use in the dairy and food industry and having special surface finishes. Pharmaceutical quality may be requested, as a supplementary requirement.  
1.2 This specification covers tubes in sizes up to and including 12 in. [300 mm] in outside diameter.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
1.4 Optional supplementary requirements are provided, and when one or more of these are desired, each shall be so stated in the order.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM A335/A335M-23(Specification)
Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service

ABSTRACT
This specification covers seamless ferritic alloy-steel pipe for high-temperature service. The pipe shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Grade P2 and P12 steel pipes shall be made by coarse-grain melting practice. The steel material shall conform to chemical composition, tensile property, and hardness requirements. Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices. The range of pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practices. The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.
SCOPE
1.1 This specification2 covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high-temperature service. Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties, and high-temperature characteristics.  
1.2 Several grades of ferritic steels (see Note 1) are covered. Their compositions are given in Table 1.  
Note 1: Ferritic steels in this specification are defined as low- and intermediate-alloy steels containing up to and including 10 % chromium.    
1.3 Supplementary requirements (S1 to S9) of an optional nature are provided. Supplementary requirements S1 through S6 call for additional tests to be made, and when desired, shall be so stated in the order together with the number of such tests required as applicable.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The inch-pound units shall apply unless the “M” designation of this specification is specified in the order.  
Note 2: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter,” “size,” and “nominal size.”  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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