Product

Q345B 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。


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

About Us
Enterprise Introduction
Development History
Convenient Logistics
Aptitude Honor
Corporate Culture
Human Resources
Product Display
Round Bar
Seamless Pipe
Rectangular Pipe
Equipment
High Quality Bar
High end medium Thick Wall Seamless Steel Pipe
News
Company Announcement
Latest Information
Marketing Network
Domestic Marketing Network
International Marketing Network
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