ASTM A671/A671M,ASME SA-671/SA-671M steel pipes are electrofusion welded steel pipes for normal and low temperature, alloy steel pipes such as CF65, CF70, CG100, CJ115, etc. are manufactured by electrofusion welding process. Carbon steel pipes such as CA55, CB60, CB65, CB70, CC65, CC65 and CC70 are manufactured by electrofusion welding process with the addition of filler metal.

Product Size

Outside diameter: NPS 1/2～24; 21.3～610mm
Wall thickness: SCH 20～160; 2.77～70.00mm
End: flat end, beveled or threaded for selection
Length: 3～12 meters or SRL, DRL, double and fixed feet

Packaging

Clear/black paint on outer surface, steel tape binding.

Chemical composition

Grade/Elements	C			Mn		P	S	Si	Cr	Cu	Mo	Ni	V
Grade/Elements	≤，%
	thickness≤50mm	50＜thickness≤100mm	thickness＞100mm	thickness≤50mm	thickness＞50mm
CF65	0.17	0.20	0.23	0.78	0.88	0.035	0.035	0.13-0.45				2.03-2.57
CF65	0.17	0.20		0.78	0.88	0.035	0.035	0.13-0.45				3.18-3.82
CF70	0.21	0.24	0.25	0.78	0.88	0.035	0.035	0.13-0.45				2.03-2.57
CF70	0.20	0.23		0.78	0.88	0.035	0.035	0.13-0.45				3.18-3.82

Grade/Elements	C	Mn	P	S	Si	Cr	Cu	Mo	Ni	V	Zr	Ti	B
Grade/Elements	≤，%
CG100	0.13	0.98	0.035	0.035	0.13-0.45				8.40-9.60
CJ115	0.13-0.23	0.74-1.20	0.025	0.025	0.34-0.86	0.46-0.84		0.15-0.31			0.04-0.16		0.0025
	0.13-0.23	064-1.10	0.025	0.025	0.13-0.37	0.36-0.69		0.12-0.28		0.02-0.09		0.01-0.05	0.0005-0.005
	0.10-0.22	0.35-0.78	0.025	0.025	0.08-0.45	1.34-2.06		0.36-0.64				0.005-0.11	0.001-0.005
	0.08-0.22	0.55-1.10	0.025	0.025	0.13-0.37	0.36-0.69	0.12-0.53	0.36-0.64	0.67-1.03	0.02-0.09		0.11	0.0005-0.006
	0.10-0.23	0.87-1.41	0.025	0.025	0.13-0.37	0.36-0.69		0.17-0.33	0.27-0.73	0.02-0.09		0.11	≥0.0005
	0.10-0.23	0.40-0.78	0.025	0.025	0.18-0.37	0.79-1.26		0.41-0.64	1.15-1.55			0.11	0.001-0.005

Grade/Elements	C					Mn		P	S	Si	Cr	Cu	Mo	Ni	V
Grade/Elements	≤，%
CA50	0.28					0.98		0.025	0.025
	thickness≤25mm	25＜thickness≤50mm	50＜thickness≤100mm	100＜thickness≤200mm	thickness＞200mm
CB60	0.24	0.27	0.29	0.31	0.31	0.98		0.025	0.025	0.13-0.45
CB65	0.28	0.31	0.33	0.33	0.33	0.98		0.025	0.025	0.13-0.45
CB70	0.31	0.33	0.35	0.35	0.35	1.30		0.025	0.025	0.13-0.45
	thickness	12.5＜thickness≤50mm	50＜thickness≤100mm	100＜thickness≤200mm	thickness＞200mm	thickness≤12.5mm	thickness＞12.5mm
CC60	0.21	0.23	0.25	0.27	0.27	0.55-0.0.98	0.79-1.30	0.035	0.035	0.13-0.45
CC65	0.24	0.26	0.28	0.29	0.29	0.79-1.30	0.79-1.30	0.035	0.035	0.13-0.45
CC70	0.27	0.28	0.30	0.31	0.31	0.79-1.30	0.79-1.30	0.035	0.035	0.13-0.45

	Tensile strength MPa	Yield strength ≥, MPa	Elongation after break ≥, %	Face shrinkage ≥, %
	Tensile strength MPa	Yield strength ≥, MPa	Elongation after break ≥, %	Rectangular specimen	Round specimen
CF65	450～585	255	23
CF70	485～620	275	21
CG100	690～825	515	20
CJ115	795～930	690	16	35	45

	Tensile strength ≥, MPa	Yield strength ≥, MPa	Elongation after break %
CA50	380～515	205	27
CB60	415～550	220	25
CB65	450～585	240	23
CB70	485～620	260	21
CC60	415～550	220	25
CC65	450～585	240	23
CC70	485～620	260	21

Application range
Typically used in the construction of petroleum and petrochemical pipelines for the transportation of high pressure fluids and gases having ambient or lower temperatures.

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