ASTM F1200-21a

Standard Specification for Fabricated (Welded) Pipe Line Strainers (Above 150 psig and 150°F (1 MPa and 65°C))

ABSTRACT
This specification covers welded pipe line strainers for use in applications above 150 psig and 150 F as well as in marine environment conditions. Strainers covered in this specification are classified into simplex, duplex (or multiplex), and automatic (self-cleaning) based on general construction. However, other bases for further classifying strainers are available: pressure ratings and types of port connection, port alignments relative to unit center lines, cover closures, valve types (in duplex), types of baskets or elements, materials of construction, and other design features. Strainers shall be manufactured by casting or forging or fabricated from plates, tubes, or pipes, with inlet and outlet connections requiring welding joined by butt welding. On the other hand, strainers made of carbon or low alloy steel shall be post-weld heat treated. The strainers shall undergo either hydrostatic or air test, while the welds shall be examined visually or radiographically. All tests shall conform to the requirements specified.
SCOPE
1.1 This specification covers welded strainers in services above 150 psig or 150°F (1 MPa and 65°C). For welded strainers in services at or below these ratings and cast strainers, see Specification F1199.  
1.2 This specification provides the minimum requirements for the design fabrication, rating, marking, and testing of welded pipe line strainers for services above 150 psig or 150°F (1 MPa and 65°C).  
Note 1: Fabricated (welded) pipe line strainers meeting this standard may also be used at pressures of 150 psig (1 MPa) and below and 0°F (–18°C) and above.  
1.3 Strainers manufactured to this specification are acceptable for use in the marine environment.  
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.5 The following safety hazards caveat pertains only to the test methods portion, Section 8, 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.  
1.6 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.

General Information

• Status: Published
• Publication Date: 31-Aug-2021
• ICS: 23.040.01 - Pipeline components and pipelines in general
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.11 - Machinery and Piping Systems

Relations

• Refers: ASTM D93-20 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
• Effective Date: 01-Aug-2020
• Refers: ASTM F1199-88(2015) - Standard Specification for Cast (All Temperatures and Pressures) and Welded Pipe Line Strainers (150 psig and 150°F Maximum)
• Effective Date: 01-May-2015
• Refers: ASTM F722-82(2014) - Standard Specification for Welded Joints for Shipboard Piping Systems
• Effective Date: 01-Nov-2014
• Refers: ASTM D93-13e1 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
• Effective Date: 15-Jul-2013
• Refers: ASTM D93-13 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
• Effective Date: 15-Jul-2013
• Refers: ASTM D93-12 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
• Effective Date: 01-Nov-2012
• Refers: ASTM F1199-88(2010) - Standard Specification for Cast (All Temperatures and Pressures) and Welded Pipe Line Strainers (150 psig and 150&#176F Maximum)
• Effective Date: 01-Mar-2010
• Refers: ASTM D93-10 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
• Effective Date: 15-Feb-2010
• Refers: ASTM F722-82(2008) - Standard Specification for Welded Joints for Shipboard Piping Systems
• Effective Date: 01-Nov-2008
• Refers: ASTM D93-08 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
• Effective Date: 15-Oct-2008
• Refers: ASTM D93-07 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
• Effective Date: 01-May-2007
• Refers: ASTM D93-06 - Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
• Effective Date: 01-Nov-2006
• Refers: ASTM F1199-88(2004) - Standard Specification for Cast (All Temperatures and Pressures) and Welded Pipe Line Strainers (150 psig and 150&#176F Maximum)
• Effective Date: 01-Nov-2004
• Refers: ASTM F722-82(2004) - Standard Specification for Welded Joints for Shipboard Piping Systems
• Effective Date: 01-Nov-2004
• Refers: ASTM D93-02a - Standard Test Methods for Flash-Point by Pensky-Martens Closed Cup Tester
• Effective Date: 10-Dec-2002

Overview

ASTM F1200-21a: Standard Specification for Fabricated (Welded) Pipe Line Strainers (Above 150 psig and 150°F (1 MPa and 65°C)) outlines the minimum requirements for the design, fabrication, rating, testing, and marking of welded pipeline strainers. These strainers are intended for applications above 150 psig (1 MPa) and 150°F (65°C), including service in marine environments. The standard classifies strainers by construction type-simplex, duplex (or multiplex), and automatic (self-cleaning)-and covers essential features to ensure mechanical integrity and operational reliability in industrial piping systems.

Key Topics

• Scope and Service Limits:

  • Applies to welded pipeline strainers used above 150 psig (1 MPa) and 150°F (65°C).
  • Suitable for both industrial and marine environments.
  • Addresses both fabricated and welded strainers; for cast strainers or those at or below specified ratings, reference ASTM F1199.

• Strainer Classification:

  • Simplex: Single chamber, flow must be shut down for cleaning.
  • Duplex (Multiplex): Multiple chambers with valves, enabling continuous flow during maintenance.
  • Automatic (Self-Cleaning): Elements can be cleaned or back-flushed while in service.

• Materials and Construction:

  • Strainers may be fabricated from plate, tube, pipe, or may be forged.
  • All pressure-retaining parts must comply with ASME Boiler and Pressure Vessel Code requirements.
  • Carbon or low alloy steel strainers require post-weld heat treatment when above certain dimensions and service conditions.
  • Inlet/outlet connections typically require butt-welding for strength and integrity.

• Testing and Quality Assurance:

  • Hydrostatic or air pressure tests are mandatory to confirm absence of leaks and structural flaws.
  • Welds must undergo visual or radiographic examination depending on service conditions and thickness.
  • Manufacturer must provide certification that products meet the standard’s requirements.

• Marking and Identification:

  • Each strainer must have a nameplate with specific identification details, including MAWP (Maximum Allowable Working Pressure), flow direction, and ASTM designation.
  • An "X" is added to the designation if radiographic inspection of welds has been performed.

Applications

• Industrial Process Piping:
  • Used to protect downstream equipment by removing solids from liquids or gases in petrochemical, chemical, and power generation plants.
• Marine Systems:
  • Specified for shipboard and offshore platforms where robust performance against corrosion and mechanical stress is critical.
• Heating and Cooling Systems:
  • Ensures long service life of pumps, valves, and heat exchangers by filtering particulates from circulating fluids.

ASTM F1200-21a is critical for engineers, fabricators, and maintenance personnel seeking reliable performance and safety in high-pressure, high-temperature, or corrosive environments.

Related Standards

• ASTM F1199: Specification for cast and welded pipeline strainers rated at or below 150 psig and 150°F.
• ASTM F722: Specification for welded joints in shipboard piping systems.
• ASME Boiler and Pressure Vessel Code (Section VIII and IX): Requirements for pressure vessels and welding qualification.
• ASME B31.1 & B31.3: Power and process piping codes.
• MSS SP-51, SP-63: Specifications for cast flanges, fittings, and wrought welding fittings.

By adhering to ASTM F1200-21a, industries ensure compliance with international best practices in the manufacture and selection of welded pipeline strainers for demanding service conditions, providing assurance of mechanical strength, operational safety, and efficient filtration.

Standards Content (Sample)

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.
Designation: F1200 −21a An American National Standard
Standard Specification for
Fabricated (Welded) Pipe Line Strainers (Above 150 psig
and 150°F (1 MPa and 65°C))
This standard is issued under the fixed designation F1200; 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 2. Referenced Documents
1.1 This specification covers welded strainers in services 2.1 ASTM Standards:
above 150 psig or 150°F (1 MPa and 65°C). For welded D93 Test Methods for Flash Point by Pensky-Martens
strainers in services at or below these ratings and cast strainers, Closed Cup Tester
see Specification F1199. F722 Specification for Welded Joints for Shipboard Piping
Systems
1.2 This specification provides the minimum requirements
F1199 Specification for Cast (All Temperatures and Pres-
for the design fabrication, rating, marking, and testing of
sures) and Welded Pipe Line Strainers (150 psig and
welded pipe line strainers for services above 150 psig or 150°F
150°F Maximum)
(1 MPa and 65°C).
2.2 MSS Standards:
NOTE 1—Fabricated (welded) pipe line strainers meeting this standard
SP-51 150 lb Corrosion Resistant Cast Flanges and Flanged
may also be used at pressures of 150 psig (1 MPa) and below and 0°F
Fittings
(–18°C) and above.
SP-63 High Strength Wrought Welding Fittings
1.3 Strainers manufactured to this specification are accept-
2.3 ASME Standards:
able for use in the marine environment.
ASME Boiler and Pressure Vessel Code Section VIII, Divi-
sion 1
1.4 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical ASME Boiler and Pressure Vessel Code Section IX
B1.20.1 Pipe Threads, General Purpose, Inch
conversions to SI units that are provided for information only
and are not considered standard. B16.1 Gray Iron Pipe Flanges and Flanged Fittings: Classes
25, 125, and 250
1.5 The following safety hazards caveat pertains only to the
B16.3 Malleable Iron Threaded Fittings: Classes 150 and
test methods portion, Section 8, of this specification. This
standard does not purport to address all of the safety concerns,
B16.4 Gray Iron Threaded Fittings: Classes 125 and 150
if any, associated with its use. It is the responsibility of the user
B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through
of this standard to establish appropriate safety, health, and
NPS 24 Metric/Inch Standard
environmental practices and determine the applicability of
B16.11 Forged Fittings, Socket-Welding and Threaded
regulatory limitations prior to use.
B16.15 Cast Copper Alloy Threaded Fittings: Classes 125
1.6 This international standard was developed in accor-
and 250
dance with internationally recognized principles on standard-
B16.24 Cast Copper Alloy Pipe Flanges, Flanged Fittings,
ization established in the Decision on Principles for the
and Valves: Classes 150, 300, 600, 900, 1500, and 2500
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
This specification is under the jurisdiction of ASTM Committee F25 on Ships the ASTM website.
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
Machinery and Piping Systems. Industry (MSS), 127 Park St., NE,Vienna,VA22180-4602, http://www.mss-hq.org.
Current edition approved Sept. 1, 2021. Published September 2021. Originally Available from American Society of Mechanical Engineers (ASME), ASME
approved in 1988. Last previous edition approved in 2021 as F1200 – 21. DOI: International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
10.1520/F1200-21A. www.asme.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1200 − 21a
B16.25 Buttwelding Ends 5.1.5 Maximum allowable working pressure/temperature
B31.1 Power Piping rating.
B31.3 Process Piping
5.1.6 Body and cover material.
5.1.7 Type of cover closure.
3. Terminology
5.1.8 Basket (element) material.
3.1 Definitions:
5.1.9 Basket hole size.
3.1.1 basket or element, n—the replaceable part in a strainer
5.1.10 Optional design features.
that performs the barrier separation of solid particles from
5.1.11 Certification (see 6.4, 8.1.2.1, and Section 9).
flowing fluid. It is normally removable for cleaning and
5.1.12 Nondestructive examination requirements (see 8.2).
servicing and can be furnished in a wide variety of materials,
5.1.13 This ASTM standard designation number.
particle size removal capability, straining area, and types of
5.1.14 Additional requirements or testing as contracted by
construction. Interchangeable baskets or elements are normally
the manufacturer and purchaser.
available for a given make, model, and size strainer.
5.2 If a product is to be specified by performance criteria
3.1.2 maximum allowable working pressure (MAWP),
rather than model description, then the following should be
n—the highest internal pressure that the strainer can be
specified:
subjected to in service. The maximum nonshock working
5.2.1 Maximum allowable clean pressure loss at a given
pressure for which a strainer is rated by the manufacturer.
flow capacity of a given liquid at a given viscosity.
3.1.3 maximum design temperature, n—the maximum tem-
5.2.2 Temperature and pressure.
perature (MAT) for which the strainer is rated by the manu-
5.2.3 Straining area.
facturer.
5.2.4 Minimum basket rupture differential pressure (see
3.1.4 strainer, n—a device which, when installed in a pipe
7.9).
line, provides a mechanical means of removing solids from a
5.2.5 Maximum valve seepage rates (see 7.8).
flowing liquid or gas by using a barrier element.
5.2.6 Certification (see 6.4, 8.1.2.1, and Section 9).
3.1.5 straining open area, n—the net effective open area of 5.2.7 For self-cleaning strainers, specify basket cleaning
the clean element through which the fluid can pass.
effectiveness and endurance testing.
5.3 In general, the standard product description should not
4. Classification
be mixed with the performance criteria because conflicting
4.1 Strainers may be classified into three general construc-
specifications can result (for example, maximum allowable
tion categories, simplex, duplex (or multiplex), and automatic
pressure loss inconsistent with product size).
(self-cleaning), as follows:
4.1.1 Simplex—A strainer consisting of a single basket or
6. Materials and Manufacture
element chamber that normally requires the flow through the
6.1 Strainer housings, as well as any pressure-retaining
unit to be shut down before cleaning.
parts, including bolting used for pressure retention, shall be
4.1.2 Duplex (or Multiplex)—A strainer usually consisting
constructed of materials listed in Section VIII, Division 1, of
ofatleasttwobasketorelementchambersseparatedbyavalve
the ASME Boiler and Pressure Vessel Code (hereafter called
(or valving) that permits continuous flow of fluid through one
ASME Code), ASME B31.1, or ASME B31.3. Bolts, screws,
chamber while the other is accessible for cleaning.
and fasteners in contact with interior fluid shall be of appro-
4.1.3 Automatic (Self-Cleaning)—Astrainerprovidingsome
priate corrosion-resistant material.
means for back-flushing or cleaning of the straining element
while the unit is in service. It can have one or more elements
6.2 The pressure ratings established under this specification
and may require periodic shutdown for maintenance and
are based on materials of high quality produced under regular
inspection.
control of chemical and mechanical properties by a recognized
process. The manufacturer shall be prepared to submit a
4.2 Strainers may be further classified by pressure ratings
certificate of compliance verifying that his product has been
and types of port connections, port alignments relative to unit
manufactured from material whose chemical and mechanical
center lines, cover closures, valve types (in duplex), types of
properties are at least equal to the requirements of an accept-
baskets or elements, materials of construction, and other
able standard or specification.
features of design.
6.3 For materials not having values of allowable stress
5. Ordering Information
tabulated in Section VIII, Division 1, of the ASME Code,
5.1 Ordersforproductsunderthisspecificationshallinclude allowable stresses shall be determined in accordance with the
the following information as applicable. If a manufacturer’s procedures outlined in Subsection C and Appendix P of that
standardized product is being ordered, include all data needed section. Where it can be shown that the values of allowable
by the manufacturer to define the product. stress listed for a particular material in one product form
5.1.1 Make. (because of similar chemistry, mechanical properties, heat
5.1.2 Model (simplex or duplex). treatment, and so forth) are applicable to the same material in
5.1.3 Port size. an unlisted product form, the listed values of allowable stress
5.1.4 P
...

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.
Designation: F1200 − 21 F1200 − 21a An American National Standard
Standard Specification for
Fabricated (Welded) Pipe Line Strainers (Above 150 psig
and 150°F (1 MPa and 65°C))
This standard is issued under the fixed designation F1200; 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
1.1 This specification covers welded strainers in services above 150 psig or 150°F (1 MPa and 65°C). For welded strainers in
services at or below these ratings and cast strainers, see Specification F1199.
1.2 This specification provides the minimum requirements for the design fabrication, rating, marking, and testing of welded pipe
line strainers for services above 150 psig or 150°F (1 MPa and 65°C).
NOTE 1—Fabricated (welded) pipe line strainers meeting this standard may also be used at pressures of 150 psig (1 MPa) and below and 0°F (–18°C)
and above.
1.3 Strainers manufactured to this specification are acceptable for use in the marine environment.
1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.5 The following safety hazards caveat pertains only to the test methods portion, Section 8, 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.
1.6 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.
2. Referenced Documents
2.1 ASTM Standards:
D93 Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
F722 Specification for Welded Joints for Shipboard Piping Systems
F1199 Specification for Cast (All Temperatures and Pressures) and Welded Pipe Line Strainers (150 psig and 150°F Maximum)
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
Current edition approved June 1, 2021Sept. 1, 2021. Published June 2021September 2021. Originally approved in 1988. Last previous edition approved in 20162021 as
F1200 – 88 (2016).F1200 – 21. DOI: 10.1520/F1200-21.10.1520/F1200-21A.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1200 − 21a
2.2 MSS Standards:
SP-51 150 lb Corrosion Resistant Cast Flanges and Flanged Fittings
SP-63 High Strength Wrought Welding Fittings
2.3 ASME Standards:
ASME Boiler and Pressure Vessel Code Section VIII, Division 1
ASME Boiler and Pressure Vessel Code Section IX
B1.1B1.20.1 Unified Inch Screw Threads (UN, UNR, and UNJ Thread Forms)Pipe Threads, General Purpose, Inch
B16.1 Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250
B16.3 Malleable Iron Threaded Fittings: Classes 150 and 300
B16.4 Gray Iron Threaded Fittings: Classes 125 and 150
B16.5 Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
B16.11 Forged Fittings, Socket-Welding and Threaded
B16.15 Cast Copper Alloy Threaded Fittings: Classes 125 and 250
B16.24 Cast Copper Alloy Pipe Flanges, Flanged Fittings, and Valves: Classes 150, 300, 600, 900, 1500, and 2500
B16.25 Buttwelding Ends
B31.1 Power Piping
B31.3 Process Piping
3. Terminology
3.1 Definitions:
3.1.1 basket or element, n—the replaceable part in a strainer that performs the barrier separation of solid particles from flowing
fluid. It is normally removable for cleaning and servicing and can be furnished in a wide variety of materials, particle size removal
capability, straining area, and types of construction. Interchangeable baskets or elements are normally available for a given make,
model, and size strainer.
3.1.2 maximum allowable working pressure (MAWP), n—the highest internal pressure that the strainer can be subjected to in
service. The maximum nonshock working pressure for which a strainer is rated by the manufacturer.
3.1.3 maximum design temperature, n—the maximum temperature (MAT) for which the strainer is rated by the manufacturer.
3.1.4 strainer, n—a device which, when installed in a pipe line, provides a mechanical means of removing solids from a flowing
liquid or gas by using a barrier element.
3.1.5 straining open area, n—the net effective open area of the clean element through which the fluid can pass.
4. Classification
4.1 Strainers may be classified into three general construction categories, simplex, duplex (or multiplex), and automatic
(self-cleaning), as follows:
4.1.1 Simplex—A strainer consisting of a single basket or element chamber that normally requires the flow through the unit to be
shut down before cleaning.
4.1.2 Duplex (or Multiplex)—A strainer usually consisting of at least two basket or element chambers separated by a valve (or
valving) that permits continuous flow of fluid through one chamber while the other is accessible for cleaning.
4.1.3 Automatic (Self-Cleaning)—A strainer providing some means for back-flushing or cleaning of the straining element while
the unit is in service. It can have one or more elements and may require periodic shutdown for maintenance and inspection.
4.2 Strainers may be further classified by pressure ratings and types of port connections, port alignments relative to unit center
lines, cover closures, valve types (in duplex), types of baskets or elements, materials of construction, and other features of design.
Available from Manufacturers Standardization Society of the Valve and Fittings Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-hq.org.
Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
F1200 − 21a
5. Ordering Information
5.1 Orders for products under this specification shall include the following information as applicable. If a manufacturer’s
standardized product is being ordered, include all data needed by the manufacturer to define the product.
5.1.1 Make.
5.1.2 Model (simplex or duplex).
5.1.3 Port size.
5.1.4 Port connections.
5.1.5 Maximum allowable working pressure/temperature rating.
5.1.6 Body and cover material.
5.1.7 Type of cover closure.
5.1.8 Basket (element) material.
5.1.9 Basket hole size.
5.1.10 Optional design features.
5.1.11 Certification (see 6.4, 8.1.2.1, and Section 9).
5.1.12 Nondestructive examination requirements (see 8.2).
5.1.13 This ASTM standard designation number.
5.1.14 Additional requirements or testing as contracted by the manufacturer and purchaser.
5.2 If a product is to be specified by performance criteria rather than model description, then the following should be specified:
5.2.1 Maximum allowable clean pressure loss at a given flow capacity of a given liquid at a given viscosity.
5.2.2 Temperature and pressure.
5.2.3 Straining area.
5.2.4 Minimum basket rupture differential pressure (see 7.9).
5.2.5 Maximum valve seepage rates (see 7.8).
5.2.6 Certification (see 6.4, 8.1.2.1, and Section 9).
5.2.7 For self-cleaning strainers, specify basket cleaning effectiveness and endurance testing.
5.3 In general, the standard product description should not be mixed with the performance criteria because conflicting
specifications can result (for example, maximum allowable pressure loss inconsistent with product size).
6. Materials and Manufacture
6.1 Strainer housings, as well as any pressure-retaining parts, including bolting used for pressure retention, shall be constructed
F1200 − 21a
of materials listed in Section VIII, Division 1, of the ASME Boiler and Pressure Vessel Code (hereafter called ASME Code), ASME
B31.1, or ASME B31.3. Bolts, screws, and fasteners in contact with interior fluid shall be of appropriate corrosion-resistant
material.
6.2 The pressure ratings established under this specification are based on materials of high quality produced under regular control
of chemical and mechanical properties by a recognized process. The manufacturer shall be prepared to submit a certificate of
compliance verifying that his product has been manufactured from material whose chemical and mechanical properties are at least
equal to the requirements of an acceptable standard or specification.
6.3 For materials not having values of allowable stress tabulated in Section VIII, Division 1, of the ASME Code, allowable stresses
shall be determined in accordance with the procedures outlined in Subsection C and Appendix P of that section. Where it can be
shown that the values of allowable stress listed for a particular material in one product form (because of similar chemistry,
mechanical properties, heat
...