ASTM A334 Gr.6 Carbon Steel Tube

ASTM A334/A334M specifications cover multiple grades of minimum wall thickness, seamless and welded carbon and alloy steel pipe for use in cryogenic environments. Because thicker wall thicknesses can adversely affect low temperature impact properties, some product specifications may not comply with this specification.

A334 Gr.6 Carbon Welded Pipe Specification

Grade	ASTM A334 Gr.6 Carbon Steel
Size	1/2" NB to 36" NB
Standard	ASTM A334, ASME SA334
Outer Diameter Size	1/4"NB To 2"NB
Wall Thickness	1 mm to 8 mm
Form	Round, Square, Rectangular, Hydraulic Etc
Schedule	SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Length	Single Random, Double Random & Cut Length.
Type	Seamless Tube
End	Plain End, Beveled End, Treaded

Chemical Composition of A334 Pipe

Element	Composition, %
	Grade 6 A
Carbon, max	0.30
Manganese	0.29–1.06
Phosphorus, max	0.025
Sulfur, max	0.025
Silicon	0.10 min
Nickel	…
Chromium	…
Copper	…
Cobalt	…
Molybdenum	…

Mechanical Properties of A334 Gr.6 ERW pipe

	Grade 6
	ksi	MPa
Tensile Strength, min	60	415
Yield Strength, min	35	240
Rockwell	B 90
Brinell	190

Pressure Rating of A334 Welded Low Temp Pipe

		OUTSIDE DIAMETER		WALL THICKNESS		WEIGHT OF BLACK PIPES
NOMINAL PIPE SIZE		STANDARD		STANDARD		PLAIN END PIPES				TEST PRESSURE
INCH	MM	INCH	MM	INCH	MM	KG/MTR	MTR/TON	LB/FT	FT/TON	PSI	KPA
3/4	20	1.050	26.7	0.083*	2.11	1.28	781	0.86	2562	700	4830
1	25	1.315	33.4	0.109*	2.77	2.09	478	1.41	1568	700	4830
1.1/4	32	1.660	42.2	0.109*	2.77	2.69	372	1.81	1221	1000	6890
1.1/2	40	1.900	48.30	0.109*	2.77	3.11	322	2.09	1056	1000	6890
2	50	2.375	60.3	0.109*	2.77	3.93	254	2.64	833	1000	6890
2.1/2	65	2.875	73.0	0.120*	3.05	5.26	190	3.53	623	1000	6890
3	80	3.500	88.9	0.120*	3.05	6.46	155	4.34	509	1000	6890
3.1/2	90	4.000	101.6	0.120*	3.05	7.41	135	4.98	443	1200	8270
4	100	4.500	114.3	0.120*	3.05	8.37	119	5.62	390	1200	8270
5	125	5.563	141.3	0.134*	3.40	11.58	86	7.78	283	1200	8270
6	150	6.625	168.3	0.134*	3.40	13.85	72	9.30	237	1000	6890
8	200	8.625	219.1	0.188**	4.78	25.26	40	16.96	130	800	5520

A334 Carbon Welded Steel Pipe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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