ASTM A671

ASTM A671: American Society for Testing and Materials
Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
Application: Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.

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Introduction
Description

ASTM A671: American Society for Testing and Materials
Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures
Application: Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.

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Chemical Requirements
Pipe	Grade	Composition %
Pipe	Grade	C max					Mn		P max	S max	Si	Others
		<=1in (25mm)	>1~2in (25~50mm)	>2~4in (50-100mm)	>4~8in (100~200mm)	>8in (200mm)	<=1/2in (12.5mm)	>1/2in (12.5mm)
CB	60	0.24	0.21	0.29	0.31	0.31	0.98max		0.035	0.035	0.13–0.45	...
	65	0.28	0.31	0.33	0.33	0.33	0.98max		0.035	0.035	0.13–0.45	...
	70	0.31	0.33	0.35	0.35	0.35	1.30max		0.035	0.035	0.13–0.45	...
CC	60	0.21	0.23	0.25	0.27	0.27	0.55–0.98	0.79–1.30	0.035	0.035	0.13–0.45	...
	65	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	...
	70	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	...

Mechanical Properties
Grade
	CB60	CB65	CB70	CC60	CC65	CC70
Tensile strength, min:
ksi	60	65	70	60	65	70
Mpa	415	450	485	415	450	485
Yield strength, min:
ksi	32	35	38	32	35	38
MPa	220	240	260	220	240	260

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ASTM A671

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