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ASTM A671 EFW Welded Carbon Steel Pipe

ASTM A671 Welded Carbon Steel Pipe, Standard Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures

Plain Carbon steel grades	CA 55, CB 60,CB 65,CB 70 CC 60,CC 65,CC 70
Nickel steel grades	CF 65,CF 70,CF 65,CF 70
Alloy steel grades	CJA 115, CJB 115,CJE 115,CJF 115,CJH 115,CJP 115
Application	It is mainly used for oil and gas transportation pipelines.

Description

A671 EFW Steel Pipe
ASTM A671, Standard Specification for Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures. Grades shall designate the type of plate used while class shall designate the type of heat treatment performed during pipe manufacture. Class shall be designated as to whether the weld is radiographically examined, and as to whether the pipe is pressure tested.
Plain Carbon steel grades：CA 55, CB 60,CB 65,CB 70 CC 60,CC 65,CC 70
Nickel steel grades: CF 65,CF 70,CF 65,CF 70
Alloy steel grades:CJA 115, CJB 115,CJE 115,CJF 115,CJH 115,CJP 115
O.D：18″-56″（457.2-1422mm）
W.T：0.312″-2″（7.92-50.8mm）
Unit Length：5-12.3 meter
Application:It is mainly used for oil and gas transportation pipelines.

Chemical Composition of A671 Pipes

Steel grade	C max	Si	Mn	P	S
A45	0.17	/	0.98	0.035	0.035
A50	0.22	/
CA55/A55	0.28	/
B55	0.20	0.13~0.45
CB60/B60	0.24
CB65/B65	0.28
CB70/C70	0.31		1.30
C55	0.18		0.55-0.98
CC60/C60	0.21		0.55-0.98
CC65/C65	0.24		0.79-1.30
CC70/C70	0.27		0.79-1.30

Mechanical Properties of A671 Pipe

Steel Grade	Yield point (N/mm2) max	Tensile Stregth (N/mm2)max	Elongation (%)
A45	165	310~450	30
A50	185	345~485	28
A50	185	345~485	28
CA55/A55	205	380~515	27
B55	205	380~515	27
CB60/B60	220	415~550	25
CB65/B65	240	450~585	23
CB70/B70	260	485~620	21
C55	205	380~515	27
CC60/C60	220	415~550	25
CC65/C65	240	450~585	23
CC70/C70	260	485~620	21

A671 steel Pipe are Fabricated from Pressure Vessel Plate of Several Analysis and Strength Level for Low Temperature Service. We provide A671 CC60, CC65, CC70 Pipe in Class 22, 32 from 18″ to 56″ and wall Thickness up to 50 mm.
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