GB/T 8162-2018 45# Seamless Structural Steel Tube

Seamless Pipe, Structural tube

GB/T 8162-2018 45# Seamless Structural Steel Tube

GB/T 8162-2018 standard covers 45# medium-carbon structural steel tubes widely used in mechanical engineering applications. This grade offers excellent strength and machinability, making it suitable for manufacturing critical components like transmission parts and load-bearing structures.

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Product Detail

Chemical Component

Quick Details

Product Name:

GB/T 8162-2018 45# Seamless Structural Steel Tube

Standard:

GB/T 8162-2018; GB/T 699-2015; GB/T 17395-2022

Grade:

45#

Thickness:

3-75mm

Section Shape:

Round

Outer Diameter:

32-630mm

Place of Origin:

Baotou, China(Mainland)

Usage:

General 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

45#

–

0.50

–

0.80

–

0.25

0.30

0.25

0.035

0.37

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

45#

–

355

–

600

–

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