ASTM A671 EFW Pipes Standard Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures

ASTM A 671   This specification covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for high-pressure service at atmospheric and lower 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 and of 1/ 4 in. (6.4 mm) wall thickness or greater. 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 as listed in 5.1.

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):

Note 1—Selection of materials should be made with attention to temperature of service. For such guidance, Specification A 20/A 20M may be consulted.

1.4 The values stated in inch-pound units are to be regarded as the standard

A671 steel pipe specification covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels, and suitable for high-pressure service at atmospheric and lower temperatures. Heat treatment may or may not be required to attain the desired properties or to comply with applicable code requirements. The A671 steel pipe material includes 0.24% of Carbon, 0.13% to 0.45% Silicon, and 0.79% to 1.30% of Manganese. This carbon-based stainless-steel alloy also contains trace amounts of other minerals. For example, 0.035% of phosphorus and Sulphur can be found in the alloy.

ASTM A671 EFW Pipe specification.

We can supply ASTM A671 CC60 EFW PIPES ,ASTM A671 CC70 EFW PIPES in different Classes.

Type: EFW steel pipe, LSAW steel pipe, Welded steel pipe
Specification: OD:21.3-1016mm. WT: SCH10, 20, 30, STD 40, 60, XS, 80,100,120,140,160, XXS. L.: SRL, DRL, or customized.
Standards: ASTM A671 /ASME SA671,ASTM A672 /ASME SA672
Grade: Nickel steel: CF 65, CF 70, CF 65, CF 70. Alloy steel: CJA 115, CJB 115,CJE 115,CJF 115,CJH 115,CJP 115. Carbon steel: CA55, CB60, CB 65, CB70 CC 60, CC 65, CC 70.
Class:10, 11, 12, 13, 20, 21, 22, 23, 30, 31, 32, 33, 40, 41, 42
Coating: Epoxy Coating / Colour Paint Coating / 3LPE Coating.