GB/T 8162-2018 16Mn Alloy Seamless Structure Tube

Seamless Pipe, Structural tube

GB/T 8162-2018 16Mn Alloy Seamless Structure Tube

The GB/T 8162-2018 standard specifies seamless steel pipes for structural purposes, including 16Mn (Q345B) low-alloy high-strength steel. These pipes are widely used in construction, machinery, and engineering structures due to their good strength, and toughness. The standard ensures dimensional accuracy and mechanical performance without strict chemical composition requirements, referring instead to GB/T 1591-2018 (Q345B) for material properties. Suitable for general structural applications, 16Mn pipes under GB/T 8162 offer reliable performance under moderate stress conditions.

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Product Detail

Chemical Component

Quick Details

Product Name:

GB/T 8162-2018 16Mn Alloy Seamless Structure Tube

Standard:

GB/T 8162-2018; GB/T 1591-2018; GB/T 17395-2022

Grade:

16Mn

Thickness:

3-75mm

Section Shape:

Round

Outer Diameter:

32-630mm

Place of Origin:

Baotou, China(Mainland)

Usage:

Construction, Machinery, and Engineering Structures

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

16Mn

–

0.20

1.00

1.60

–

0.30

0.50

–

0.025

0.020

0.50

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

16Mn

–

345

–

470

–

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