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1.1 This specification covers steel pipe: electric-fusion-welded with filler metal added, fabricated from pressure-vessel quality plate of any of several analyses and strength levels and suitable for high-pressure service at moderate temperatures. Heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements. Supplementary requirements are provided for use when additional testing or examination is desired.
1.2 The specification nominally covers pipe 16 in. (405 mm) in outside diameter or larger with wall thicknesses up to 3 in. (75 mm), inclusive. Pipe having other dimensions may be furnished provided it complies with all other requirements of this specification.
1.3 Several grades and classes of pipe are provided.
1.3.1 Grade designates the type of plate used.
1.3.2 Class designates the type of heat treatment performed during manufacture of the pipe, whether the weld is radiographically examined, and whether the pipe has been pressure tested as listed in 1.3.3.
1.3.3 Class designations are as follows (Note 1):
|Class||Heat Treatment on Pipe||Radiography,|
|20||stress relieved, see 5.3.1|| none|| none|
|21||stress relieved, see 5.3.1|| 9|| none|
|22||stress relieved, see 5.3.1|| 9|| 8.3|
|23||stress relieved, see 5.3.1|| none|| 8.3|
|30||normalized, see 5.3.2|| none|| none|
|31||normalized, see 5.3.2|| 9|| none|
|32||normalized, see 5.3.2|| 9|| 8.3|
|33||normalized, see 5.3.2|| none|| 8.3|
|40||normalized and tempered, see 5.3.3|| none|| none|
|41||normalized and tempered, see 5.3.3|| 9|| none|
|42||normalized and tempered, see 5.3.3|| 9|| 8.3|
|43||normalized and tempered, see 5.3.3|| none|| 8.3|
|50||quenched and tempered, see 5.3.4|| none|| none|
|51||quenched and tempered, see 5.3.4|| 9|| none|
|52||quenched and tempered, see 5.3.4|| 9|| 8.3|
|53||quenched and tempered, see 5.3.4|| none||8.3|
Note 1—Selection of materials should be made with attention to temperature of service. For such guidance, Specification A 20/A 20M
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels
A202/A202M Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Manganese-Silicon
A204/A204M Specification for Pressure Vessel Plates, Alloy Steel, Molybdenum
A285/A285M Specification for Pressure Vessel Plates, Carbon Steel, Low- and Intermediate-Tensile Strength
A299/A299M Specification for Pressure Vessel Plates, Carbon Steel, Manganese-Silicon
A302/A302M Specification for Pressure Vessel Plates, Alloy Steel, Manganese-Molybdenum and Manganese-Molybdenum-Nickel
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates
A515/A515M Specification for Pressure Vessel Plates, Carbon Steel, for Intermediate- and Higher-Temperature Service
A516/A516M Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service
A530/A530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe
A533/A533M Specification for Pressure Vessel Plates, Alloy Steel, Quenched and Tempered, Manganese-Molybdenum and Manganese-Molybdenum-Nickel
A537/A537M Specification for Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-Silicon Steel
A577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates
A578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications
E109 Method for Dry Powder Magnetic Particle Inspection
E110 Test Method for Indentation Hardness of Metallic Materials by Portable Hardness Testers
E138 Method for Wet Magnetic Particle Inspection
E165 Practice for Liquid Penetrant Examination for General Industry
E709 Guide for Magnetic Particle Testing
ASME Boiler and Pressure Vessel CodeSectionIX,WeldingQua
ICS Number Code 23.040.10 (Iron and steel pipes)
UNSPSC Code 40171601(Industrial welded carbon steel pipe)