GB/T 8162-2018 27SiMn Alloy Structural Steel Tube

Seamless Pipe, Structural tube

GB/T 8162-2018 27SiMn Alloy Structural Steel Tube

27SiMn is a high-strength low-alloy structural steel specified in GB/T 3077-2015, with optimized Si-Mn composition for enhanced mechanical properties. While the standard’s creators primarily set requirements for material (chemical composition, mechanical performance), they do not define product forms. Manufacturers can process the material into bars, forgings, or seamless tubes per applicable manufacturing standards. 27SiMn is suitable for heavy-duty structural components requiring superior strength and wear resistance.

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Product Detail

Chemical Component

Quick Details

Product Name:

GB/T 8162-2018 27SiMn Alloy Structural Steel Tube

Standard:

GB/T8162-2018; GB/T3077-2015;GB/T17395-2022

Grade:

27SiMn

Thickness:

3-75mm

Section Shape:

Round

Outer Diameter:

32-630mm

Place of Origin:

Baotou, China(Mainland)

Usage:

Structural applications

Surface Treatment:

Hot Rolled

Tolerance:

OD: 32-50mm ±0.5mm; 50-630mm ±1.0%D WT: ≤3mm ±12.5%S; >3mm ±10%S

End:

Plain, beveled, or customized

End Protector:

Plastic pipe caps,iron protector or customized

length:

3-12m or customized

Brand:

Baotou steel

Delivery Time:

Normally within 30-45 days and according to the quantity.

Chemical Component（GB/T 8162）

Grade

Type

Min

Max

Min

Max

Min

Max

Min

Max

27SiMn

–

0.32

–

1.40

–

1.40

Mechanical Performance（GB/T 8162）

Grade

Type

Total under load

Elongation

Yield Strength

Tensile Strength

Hardness

Specified

Allowable hardness

Variation

Min

Max

Min

HRC

HBW

HRC

27SiMn

–

835

–

980

–

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