PRODUCT DESCRIPTION

GB/T8162 is a standard seamless pipe, suitable for seamless pipes in general structures and mechanical structures. The parts after quenching and tempering of GB/T8162 seamless steel pipe have good comprehensive mechanical properties and are widely used in various important structural parts, especially those connecting rods, bolts, gears and shafts that work under alternating loads. However, the surface hardness is low and not wear-resistant. Quenching and tempering, as well as surface quenching can be used to improve the surface hardness of the parts.


Product Parameters

Product NameGB/T8162 Seamless Steel Pipe
StandardEN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer DiameterSeamless: 1/4"-36"Welding: 21.3mm-3620mm
Round Tube: 1/2"-10"Square Tube/Rectangular Tube: 15x15mm-400x600mm
Wall ThicknessSeamless: 1.25mm-50mmWelding: 1.65mm-65mm
Length3-12 meters, Support customization
Surface ProcessBright, Polished, Black
Other ServicesMachining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

 

Chemical Composition

GradeCSiMnP, SCuNiMoCr
100.07-0.140.17-0.370.35-0.65≤ 0.035≤ 0.25≤ 0.25/≤ 0.15
200.17-0.240.17-0.370.35-0.65≤ 0.035≤ 0.25≤ 0.25/≤ 0.25
350.32-0.400.17-0.370.50-0.80≤ 0.035≤ 0.25≤ 0.25/≤ 0.25
450.42-0.500.17-0.370.50-0.80≤ 0.035≤ 0.25≤ 0.25/≤ 0.25
16Mn0.12-0.200.20-0.551.20-1.60≤ 0.035≤ 0.25≤ 0.25/≤ 0.25
12CrMo0.08-0.150.17-0.370.40-0.70≤ 0.035≤ 0.25≤ 0.300.40-0.550.40-0.70
15CrMo0.12-0.180.17-0.370.40-0.70≤ 0.035≤ 0.25≤ 0.300.40-0.550.80-1.10
12Cr1MoV0.08-0.150.17-0.370.40-0.70≤ 0.035≤ 0.25≤ 0.300.25-0.350.90-1.20

 

Mechanical Properties

GradeTensile Strength (MPa)Yield Strength (MPa)Elongation (%)
10≥ 335≥ 205≥ 24
20≥ 390≥ 245≥ 20
35≥ 510≥ 305≥ 17
45≥ 590≥ 335≥ 14
16Mn≥ 490≥ 325≥ 21
12CrMo≥ 410≥ 265≥ 24
15CrMo≥ 440≥ 295≥ 22
12Cr1MoV≥ 490≥ 245≥ 22

 

Scope of Application

Seamless steel tubes for the manufacture of pipes, vessels, equipment, fittings and mechanical structures


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