Name: GB/T8162 Seamless Steel Pipe
SKU: 0

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GB/T8162 Seamless Steel Pipe

This standard applies to seamless steel tubes for general structural and mechanical structures. The main production of steel pipe grade includes Gr 10, Gr 20, Gr 35, Gr 45, Q345, 15CrMo, and 12Cr1MoV.

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product description

GB/T8162 Seamless Steel Pipe 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 Name	GB/T8162 Seamless Steel Pipe
Standard	EN/DIN/JIS/ASTM/BS/ASME/AISI etc.
Outer Diameter	Seamless: 1/4"-36"	Welding: 21.3mm-3620mm
	Round Tube: 1/2"-10"	Square Tube/Rectangular Tube: 15x15mm-400x600mm
Wall Thickness	Seamless: 1.25mm-50mm	Welding: 1.65mm-65mm
Length	3-12 meters, Support customization
Surface Process	Bright, Polished, Black
Other Services	Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc.

Chemical Composition

Grade	C	Si	Mn	P, S	Cu	Ni	Mo	Cr
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
12CrMo	0.08-0.15	0.17-0.37	0.40-0.70	≤ 0.035	≤ 0.25	≤ 0.30	0.40-0.55	0.40-0.70
15CrMo	0.12-0.18	0.17-0.37	0.40-0.70	≤ 0.035	≤ 0.25	≤ 0.30	0.40-0.55	0.80-1.10
12Cr1MoV	0.08-0.15	0.17-0.37	0.40-0.70	≤ 0.035	≤ 0.25	≤ 0.30	0.25-0.35	0.90-1.20

Mechanical Properties

Grade	Tensile 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

Factory Display

Mode Of Transport

FAQ

Q1: Are you a manufacturer or a trading company?
A: We are a professional metal products manufacturer based in Shandong, China, with our own production facilities and a strong supply chain. We specialize in carbon steel and stainless steel products, with over 100,000 tons of stock available year-round.

Q2: Where is your company located? Can I visit your factory?
A: Our company is located in Shandong, China. We welcome customers and partners from all over the world to visit our facilities. Please contact us in advance to arrange a visit.

Q3: What products does your company mainly supply?
A: We mainly supply carbon steel and stainless steel products in various forms, including plates, pipes, coils, bars, structural steel (H-beam, channel steel, angle steel), and customized metal components. We cover a full range of specifications to meet diverse customer needs.

Q4: Do you support OEM or customized orders?
A: Yes. We have years of experience in product customization. We can produce according to your drawings, samples, or specific technical requirements. Please contact us with your customization needs.

Q5: What material grades do you offer?
A: For carbon steel, we offer grades such as A36, S235JR, Q235, Q345, and more. For stainless steel, we offer 304, 304L, 316, 316L, 201, 430, and other common grades. Custom grades are available upon request.

Q6: How do you guarantee product quality?
A: Our factory operates under strict QA/QC standards. Every product is inspected during production and before shipment to ensure it meets agreed quality specifications. We can provide mill test certificates and accept thirdparty inspections upon request.