ASTM/DIN carbon seamless steel pipe

ASTM/DIN carbon seamless steel pipe

Nominal  diameter		Outer diameter		Central  pipe				Thickened pipe
m	m	Nominal  size (	Allowed deviation	Wall  thickness			Theoretical weight kg/m	Wall thickness		Theoretical Weight kg/m
				Nominal size	Allowed deviation %			Nominal size (	Allowed  deviation %
6	1/8	10.0	+/_0.50mm	2		+/-12 -15	0.39	2.50	+/-12 -15	0.46
8	1/4	13.5		2.25			0.62	2.75		0.73
10	3/8	17.0		2.25			0.82	2.75		0.97
15	1/2	21.3		2.75			1.26	3.25		1.45
20	3/4	26.8		2.75			1.63	3.50		2.01
25	1	33.5		3.25			2042	4.00		2.97
32	11/4	42.3		3.25			3.13	4.00		3.78
40	11/2	48.0	+/-1%	3.5			3.84	4.25		4.58
50	2	60.0		3.5			4.88	4.50		6.16
65	21/2	75.5		3.75			6.64	4.50		7.88
80	3	88.5		4.00			8.34	4.75		9.81
100	4	114.0		4.00			10.85	5.50		13.44
125	5	140.0		4.00			13.42	5.50		18.24
150.	6	165		4.00			17.81	5.50		21.63

Testing item	Technology performance	Testing result	Testing basis
Bond strength test	No less than 10mpa	Qualified	GJ/T136-2001
Bending test	No steel –plastic split	No split layer found	GJ/T136-200
Flattening test	No steel –plastic split	No split layer found	GJ/T136-2001
Cold /hot  water endurance test	No steel –plastic split	No steel –plastic split	GJ/T136-2001
Sanitary performance test	ndexes provide by the standard shall be met	No steel –plastic split
Outer coating	Indexes provide by the standard shall be met	Qualified	GJ/T136-2001