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Home > Product Display > Rectangular Pipe > Square Tube

Round Bar

Seamless Pipe

Rectangular Pipe

Q345C Square Tube

Implementation Standards

Seamless pipe: GB/30942000, weld pipe: GB/67282002

Applicable Scope

The use of square construction, machinery manufacturing, shipbuilding, steel construction projects, solar power support, steel structure engineering, power engineering, power plant, agricultural and chemical machinery, glass curtain wall, car chassis, airport, boiler construction, highway railings, housing construction, pressure vessels, oil tanks, bridges, power station equipment. Cranes and other high load welding etc..

Chemical Composition

Q345A：C≤0.20，Mn ≤1.70，Si≤0.50，P≤0.035，S≤0.035；

Q345B：C≤0.20，Mn ≤1.70，Si≤0.50，P≤0.035，S≤0.035；

Q345C：C≤0.20，Mn ≤1.70，Si≤0.50，P≤0.030，S≤0.030，Al≥0.015；

Q345D：C≤0.18，Mn ≤1.70，Si≤0.50，P≤0.030，S≤0.025，Al≥0.015；

Q345E：C≤0.18，Mn ≤1.70，Si≤0.50，P≤0.025，S≤0.020，Al≥0.015；

Q345A、B、C、D、E均含Nb≤0.07，V≤0.15，Ti≤0.20，Cr≤0.30，N≤0.012，Mo≤0.10。

20#、Q235B

Mechanical Property

Plain Carbon Steel

Q235 tensile strength: 375 ~ 500, yield strength is more than 235, the elongation rate: = 25

No. 20: 390 to 530, the tensile strength yield strength is more than 235, the elongation rate: = 20

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Product Display: Round Bar; Seamless Pipe; Rectangular Pipe

Equipment: High Quality Bar; High end medium Thick Wall Seamless Steel Pipe

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Contact Us: ADD：Wuxi Liang Xi District Jinshan North Industrial Park
TEL：+86-0510-8307-4477
FAX：+86-0510-8307-4488
E-mail：kikoquan@mingshangsteel.com

Add：Wuxi Liang Xi District Jinshan North Industrial Park Tel：+86-0510-8307-4477 Fax：+86-0510-8307-4488

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