GB/T 8162-2018 Q420 Seamless Structural Tubing Grades

Seamless Pipe, Structural tube

GB/T 8162-2018 Q420 Seamless Structural Tubing Grades

IMRI produce Q420 structural pipe in compliance with GB/T 8162-2018 as a high-strength carbon steel tube, and the construction, machinery, and engineering industries widely use it.With a minimum yield strength of 420 MPa, it offers excellent load-bearing capacity and this seamless pipe ensures durability and reliability for structural applications under moderate pressure and stress conditions.

Email:

sales@imristeel.com

Phone:

+86 13646172523

Quote Now

Product Detail

Chemical Component

Quick Details

Product Name:

GB/T 8162-2018 Q420 Seamless Structural Tubing Grades

Standard:

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

Grade:

Q420

Thickness:

3-75mm

Section Shape:

Round

Outer Diameter:

32-630mm

Place of Origin:

Baotou, China(Mainland)

Usage:

Construction, machinery, and engineering

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

Q420

–

0.20

–

1.70

–

0.20

–

0.30

0.80

0.20

0.035

0.50

Mechanical Performance（GB/T 8162）

Grade	Type	Total under load Elongation %	Yield Strength		Tensile Strength	Hardness		Specified OD mm	Allowable hardness Variation
Grade	Type	Total under load Elongation %	Min	Max	Min	HRC	HBW	Specified OD mm	HRC
Q420	–	18	420	–	520	–	–	–	–