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ASTM A787-05

(Specification)

Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing

Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing

ABSTRACT
This guide covers standard specification for round, square, rectangular, and special shape, electric-resistance-welded mechanical tubing, either zinc-coated (galvanized) after welding or produced from aluminum-coated, zinc-coated (galvanized), zinc-iron alloy-coated (galvannealed), or aluminum-zinc alloy-coated steel sheet. Low-carbon steels and other carbon steels shall conform to the required chemical composition for carbon, manganese, phosphorus, and sulfur. The steels shall conform to elemental tolerances for product analysis. Wall thickness tolerances for premetallic coated as-welded tubing and diameter tolerances for metallic-coated round tubing shall be provided.
SCOPE
1.1 This specification covers round, square, rectangular, and special shape, electric-resistance-welded mechanical tubing, either zinc-coated (galvanized) after welding or produced from aluminum-coated, zinc-coated (galvanized), zinc-iron alloy-coated (galvannealed), or 55 % aluminum-zinc alloy-coated steel sheet. Tubing for use as electrical conduit (EMT) or intermediate metallic conduit (IMC) is not covered by this specification.
1.2 This specification covers mechanical tubing with outside diameters or maximum outside dimensions ranging from 1/2 to 8 in. (12.7 to 203.2 mm) and wall thickness from 0.028 to 0.134 in. (0.71 to 3.40 mm).
1.3 Sizes outside the ranges listed above may be ordered provided all other requirements of the specification are met.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

Status
Historical
Publication Date
28-Feb-2005
ICS
23.040.40 - Metal fittings
Technical Committee
A01 - Steel, Stainless Steel and Related Alloys
Drafting Committee
A01.09 - Carbon Steel Tubular Products
Current Stage
Ref Project

Relations

Replaces
ASTM A787-01 - Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing
Effective Date
01-Mar-2005
Replaced By
ASTM A787/A787M-09 - Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing
Effective Date
01-Oct-2009
Referred By
ASTM D1587/D1587M-15 - Standard Practice for Thin-Walled Tube Sampling of Fine-Grained Soils for Geotechnical Purposes
Effective Date
01-Mar-2005

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ASTM A787-05 - Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical TubingASTM A787-05 - Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing
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ASTM A787-05 - Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
Designation: A787 – 05
Standard Specification for
Electric-Resistance-Welded Metallic-Coated Carbon Steel
1
Mechanical Tubing
This standard is issued under the fixed designation A787; 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.
1. Scope* 3. Classification
1.1 This specification covers round, square, rectangular, and 3.1 The types of tubing covered by this specification are:
special shape, electric-resistance-welded mechanical tubing,
Type Code Description
Number Letters
either zinc-coated (galvanized) after welding or produced from
aluminum-coated, zinc-coated (galvanized), zinc-iron alloy-
1 AWAC electric-resistance-welded aluminum-
coated (galvannealed), or 55 % aluminum-zinc alloy-coated
coated carbon steel mechanical tubing
2 AWG electric-resistance-welded galvanized car-
steel sheet. Tubing for use as electrical conduit (EMT) or
bon steel mechanical tubing
intermediate metallic conduit (IMC) is not covered by this
3 AWPG electric-resistance-welded carbon steel
specification. mechanical tubing, post-hot dipped gal-
vanized
1.2 This specification covers mechanical tubing with out-
4 AWGA electric-resistance-welded carbon steel
side diameters or maximum outside dimensions ranging from
mechanical tubing, zinc-iron alloy-
1
⁄2 to 8 in. (12.7 to 203.2 mm) and wall thickness from 0.028 coated (galvannealed)
5 AWGZ electric-resistance-welded carbon steel
to 0.134 in. (0.71 to 3.40 mm).
mechanical tubing, 55 % aluminum-zinc
1.3 Sizes outside the ranges listed above may be ordered
alloy-coated
provided all other requirements of the specification are met.
4. Ordering Information
1.4 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for 4.1 The ordered wall thickness of the tubing shall be the
information only. total of the base metal and the metallic coating.
4.2 Orders for material under this specification shall in-
2. Referenced Documents
clude the following:
2
2.1 ASTM Standards:
4.2.1 Quantity (feet, metres, or number of lengths),
A463/A463M Specification for Steel Sheet, Aluminum-
4.2.2 Type, code letters, and description (Sections 1 and 3),
Coated, by the Hot-Dip Process
4.2.3 Applicable ASTM designation number(s),
A653/A653M Specification for Steel Sheet, Zinc-Coated
4.2.4 Coating designation and type of coating,
(Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed)
4.2.5 Chemically treated or not chemically treated raw
by the Hot-Dip Process
material,
A792/A792M Specification for Steel Sheet, 55 %
4.2.6 Oiled or dry (Section 16),
Aluminum-Zinc Alloy-Coated by the Hot-Dip Process
4.2.7 Extra smooth coating (if required),
A924/A924M Specification for General Requirements for 4.2.8 Customer application, including fabrication,
Steel Sheet, Metallic-Coated by the Hot-Dip Process
4.2.9 Flash condition (7.1),
B6 Specification for Zinc 4.2.10 Steel grade designation (Sections 5 and 9),
4.2.11 Report of chemical analysis if required (Sections 10
and 11),
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
4.2.12 Shape (round, square, rectangular, or special),
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
4.2.12.1 Dimensions: round—any two of the following:
A01.09 on Carbon Steel Tubular Products.
inside diameter, outside diameter, or wall thickness; square or
Current edition approved March 1, 2005. Published March 2005. Originally
rectangular—outside dimension, wall thickness, and corner
approved in 1981. Last previous edition approved in 2001 as A787 – 01. DOI:
10.1520/A0787-05.
radii, if required. (See 12.1 and 13.1 and 13.2.)
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.2.13 Length: round tubing—mill lengths or definite cut
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
lengths (see 12.2); square and rectangular tubing—mill cut
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. lengths and specified length (see 13.4).
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
A787 – 05
A
TABLE 2 Chemical Requirements for Other Carbon Steels
4.2.14 Squareness of cut: round tubing, if required (see
12.3); square and rectangular tubing, if required (see 13.7), Composition, %
Grade
4.2.15 Burrs removed, if required (see 15.2),
Phos-
Designa-
Sulfur,
Carbon Manganese phorus,
4.2.16 Special packaging (Section 19
...

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Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service

ABSTRACT
This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction. These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. The material for fittings shall consist of killed steel, forgings, bars, plates, seamless or fusion-welded tubular products with filler metal added. Forging or shaping operations may be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. The forming procedure shall be so applied that it will not produce injurious imperfections in the fittings. Fittings, after forming at an elevated temperature, shall be cooled to a temperature below the critical range under suitable conditions to prevent injurious defects caused by too rapid cooling, but in no case more rapidly than the cooling rate in still air. The fittings shall be subjected to tension test, hardness test, and hydrostatic test.
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ABSTRACT
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This specification covers several grades of carbon and low alloy steel forged or ring-rolled flanges, forged fittings and valves for low-temperature service. The steel specimens shall be melt processed using open-hearth, basic oxygen, electric furnace or vacuum-induction melting. A sufficient discard shall be made to secure freedom from injurious piping and undue segregation. The materials shall be forged and shall undergo heat treatment such as normalizing, tempering, quenching and precipitation heat treatment. Heat analysis and product analysis shall be performed wherein the steel materials shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, copper, columbium, vanadium, and nitrogen. The materials shall also undergo tension tests and shall conform to the required values of tensile strength, yield strength and elongation. Impact tests shall also be performed and the steel materials shall conform to the required values of minimum impact energy, temperature, and minimum equivalent absorbed energy. Hardness and hydrostatic tests shall also be performed.
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ABSTRACT
This specification covers the common requirements that shall apply to wrought steel piping fittings. The material shall consist of forgings, bars, plates, and seamless or welded tubular products. Ferritic steels shall be fully killed. Hollow cylindrically shaped parts up to and including NPS 4 may be machined from bar or seamless tubular material. Elbows, return bends, tees, and header tees shall not be machined directly from bar stock. The following procedures shall be done for heat treatment: full annealing, solution annealing, isothermal annealing, normalizing, tempering and post-weld heat treatment, stress relieving, and quench and temper. Chemical analysis, heat analysis, and product analysis shall also be done. The chemical requirements shall conform to the required compositions of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, vanadium, columbium, titanium, aluminum, lead, and copper. The following tests shall be done for the mechanical requirements: tension, hardness, impact, and hydrostatic tests.
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Title of Specification  
ASTM
Designation  
Specification for Piping Fittings of Wrought
Carbon Steel and Alloy Steel for Moderate and
High Temperature Service  
A234/A234M    
Specification for Wrought Austenitic Stainless
Steel Piping Fittings  
A403/A403M    
Specification for Piping Fittings of Wrought Carbon
Steel and Alloy Steel for Low-Temperature Service  
A420/A420M    
Specification for Wrought-Carbon Steel Butt-Welding
Piping Fittings with Improved Notch Toughness  
A758/A758M    
Specification for As-Welded Wrought Austenitic
Stainless Steel Fittings for General Corrosive
Service at Low and Moderate Temperatures  
A774/A774M    
Specification for Wrought Ferritic, Ferritic/Austenitic,
and Martensitic Stainless Steel Piping Fittings  
A815/A815M    
Specification for Heat-Treated Carbon Steel
Fittings for Low-Temperature and Corrosive Service  
A858/A858M    
Specification for Wrought High-Strength
Ferritic Steel Butt-Welding Fittings  
A860/A860M  
1.2 In case of conflict between a requirement of the individual product specification and a requirement of this general requirement specification, the requirements of the individual product specification shall prevail over those of this specification.  
1.3 By mutual agreement between the purchaser and the supplier, additional requirements may be specified (See 4.1.8). The acceptance of any such additional requirements shall be dependent on negotiations with the supplier and must be included in the order as agreed upon by the purchaser and supplier.  
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the text and the tables, 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 specification. The inch-pound units shall apply unless the “M” designation [SI] of the product specification is specified in the order.  
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Standard Specification for Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings

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SCOPE
1.1 This specification covers two general classes, WP and CR, of wrought ferritic, ferritic/austenitic, and martensitic stainless steel fittings of seamless and welded construction covered by the latest revision of Specification A960/A960M. Fittings differing from these standards may be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M.  
1.1.1 Class WP fittings are subdivided into four subclasses: Classes WP-S, WP-W, WP-WX, and WP-WU. They are manufactured to the requirements of Specification A960/A960M, and they shall have pressure ratings compatible with 13.2. Class WP-S fittings are those manufactured from seamless product by a seamless method of manufacture (marked with class symbol WP-S); Class WP-W fittings are those which contain welds where the fitting fabrication or construction welds have been radiographed (marked with class symbol WP-W); and Class WP-WX fittings are those which contain welds where all welds have been radiographed (marked with class symbol WP-WX); and Class WP-WU fittings are those which contain welds where all welds have been ultrasonically tested (marked with class symbol WP-WU).  
1.1.2 Class CR fittings are those manufactured to the requirements of MSS SP-43, and they shall have pressure ratings compatible with 13.3.  
1.2 This specification does not apply to cast fittings.  
1.3 Optional supplementary requirements are provided. When desired, one or more of these may be specified in the order.  
1.4 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “M” specification designation [SI units], the material shall be furnished to inch-pound units.  
1.5 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.  
1.6 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 A420/A420M-22(Specification)
Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service

ABSTRACT
This specification covers wrought carbon steel and alloy steel pipe fittings of seamless and welded construction for use in pressure piping and pressure vessel service at low temperatures. Materials shall consist of forgings, bars, plates, seamless or fusion welded tubular products with filler metal added, and shall be produced by open-hearth, basic-oxygen, or electric-furnace process. Forging or forming operations shall be performed by one or a combination of two or more of the following procedures: hammering, pressing, piercing, extruding, upsetting, working, bending, fusion-welding, or machining. All welding shall be completed prior to the austenitizing heat treatment, which shall be executed in the normalized, normalized and tempered, annealed, or quenched and tempered conditions. Steel specimens shall conform to required values of chemical composition, tensile strength, yield strength, elongation, wall thickness, and Charpy V-notch impact value. All fusion-welded butt joints shall undergo radiographic examination, while hydrostatic testing of fittings is not required in this specification. Repair welding shall be permissible for parts made to dimensional standards.
SCOPE
1.1 This specification2 covers wrought carbon steel and alloy steel fittings of seamless and welded construction, covered by the latest revision of ASME B16.9, ASME B16.11, MSS SP-79, MSS SP-83, MSS SP-95, and MSS SP-97. Fittings differing from these ASME and MSS standards shall be furnished in accordance with Supplementary Requirement S58 of Specification A960/A960M. These fittings are for use in pressure piping and pressure vessel service at low temperatures.  
1.2 Optional supplementary requirements are provided for fittings where a greater degree of examination is desired. When desired, one or more of these supplementary requirements shall be specified in the order.  
1.3 This specification is expressed in both inch-pound units and in SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished to inch-pound units.  
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.  
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 A787/A787M-22(Specification)
Standard Specification for Electric-Resistance-Welded Metallic-Coated Carbon Steel Mechanical Tubing

ABSTRACT
This guide covers standard specification for round, square, rectangular, and special shape, electric-resistance-welded mechanical tubing, either zinc-coated (galvanized) after welding or produced from aluminum-coated, zinc-coated (galvanized), zinc-iron alloy-coated (galvannealed), or aluminum-zinc alloy-coated steel sheet. Low-carbon steels and other carbon steels shall conform to the required chemical composition for carbon, manganese, phosphorus, and sulfur. The steels shall conform to elemental tolerances for product analysis. Wall thickness tolerances for premetallic coated as-welded tubing and diameter tolerances for metallic-coated round tubing shall be provided.
SCOPE
1.1 This specification covers round, square, rectangular, and special shape, electric-resistance-welded carbon steel mechanical tubing, either zinc-coated (galvanized) after welding or produced from aluminum-coated, zinc-coated (galvanized), zinc-iron alloy-coated (galvannealed), 55 % aluminum-zinc alloy-coated, or zinc-aluminum-magnesium alloy-coated carbon steel sheet. Tubing for use as electrical conduit (EMT) or intermediate metallic conduit (IMC) is not covered by this specification.  
1.1.1 The product is available in various grades based on chemical requirements (Sections 5 and 9).  
1.1.2 The product is available in various Types (Section 3).  
1.2 This specification covers mechanical tubing with outside diameters or maximum outside dimensions ranging from 1/2 to 15 in. [12.7 to 380.0 mm] and wall thickness from 0.028 to 0.180 in. [0.70 to 4.60 mm]. Indeterminate wall thicknesses may be ordered. In those cases the more stringent tolerances of Tables 3, 4, 5, 6, 12 and 13 shall apply.  
1.3 When sizes within the ranges listed above are ordered, all other requirements of the specification shall be met.  
1.4 This specification is expressed in both inch-pound units and in SI units; however, unless the purchase order specifies the applicable M specification designation (SI units), the inch-pound units shall apply. 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.  
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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