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Mechanical Steel Tube

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
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 / / / /
STKM13B ≤0.25 ≤0.35 ≤0.60 ≤0.040 / / / /
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