Mechanical Steel Tube

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The mechanical steel tube is one of the most commonly used seamless steel pipes which have hollow section but no weld joint from one end to another end. This hot-rolled seamless pipe features lighter weight as compared with round steel when the bending and twisting strength is identical. So, it is a cost effective steel pipe.

The mechanical steel tubes supplied by N-STEEL are available in various sizes. The outside diameter ranges from 1/2" to 30" and the wall thickness is SCH5-SCH160. Typical applications of this ASTM steel pipe, DIN steel pipe or JIS steel pipe are structural components and mechanical parts such as oil drill pipe, bicycle frame, steel scaffold, etc.

Coating Properties of PE Coated Steel Pipe

Standards	Steel Grade
EN10210-1	S235JRH, S275J0H, S275J2H, S355J0H, S355J2H
EN10297-1	E235, E275, E315, E355, E470, E420J2, 30CrMo4, 34CrMo4, 42CrMo4
ASTM A519	1010, 1016, 1018, 1020, 1026, 1030, 1518, 1524, 1541
DIN1629/DIN2391	ST37.4, ST52
JIS G3445	STKM13A, STKM13B

Technical Parameters of Mechanical Steel Tube

Standards	Grade	Chemical Components
Standards	Grade	C	Si	Mn	P、S	Cu	Ni	Mo	Cr
GB/T 8162	10	0.07~0.14	0.17~0.37	0.35~0.65	≤0.035	≤0.25	≤0.25	/	≤0.15
	20	0.17~0.24	0.17~0.37	0.35~0.65	≤0.035	≤0.25	≤0.25	/	≤0.25
	35	0.32~0.40	0.17~0.37	0.50~0.80	≤0.035	≤0.25	≤0.25	/	≤0.25
	45	0.42~0.50	0.17~0.37	0.50~0.80	≤0.035	≤0.25	≤0.25	/	≤0.25
	16Mn	0.12~0.20	0.20~0.55	1.20~1.60	≤0.035	≤0.25	≤0.25	/	≤0.25
ASTM A519	1020	0.18~0.23	/	0.30~0.60	≤0.040	/	/	/	/
	1045	0.43~0.50	/	0.60~0.90	≤0.040	/	/	/	/
	1541	0.36~0.44	/	1.35~1.65	≤0.040	/	/	/	/
EN10297-1	E275	≤0.21	≤0.35	≤1.40	≤0.030	/	/	/	/
	E315	≤0.21	≤0.30	≤1.50	≤0.030	/	/	/	/
	34CrMo4	0.30~0.37	≤0.40	0.60~0.90	≤0.035	/	/	0.15~0.30	0.90~1.20
	42CrMo4	0.38~0.45	≤0.40	0.60~0.90	≤0.035	/	/	0.15~0.30	0.90~1.20
JIS G3445	STKM13A	≤0.25	≤0.35	≤0.60	≤0.040	/	/	/	/
JIS G3445	STKM13B	≤0.25	≤0.35	≤0.60	≤0.040	/	/	/	/