China Factory Best Quality Mild Steel Square Steel Pipe St52 Q345, Find details about China Welded Steel Pipes and Tubes, ASTM A500 Steel Square Tube from Factory Best Quality Mild Steel Square Steel Pipe St52 Q345
Item | MS hollow mild square erw square and rectangular Steel Pipes and Tubes |
Material | SPHC, Q195,Q215,Q235,Q345,SAE1010,SAE1020, API Standard material, ASTM A53 A,B |
Wall thickness | 0.5-20 mm |
outer diameter | SHS: 15*15-400*400mm, RHS: 20*25-400*300mm |
Length | 2m-12m or as per customers' requirement |
Thickness Tolerance | + 5%- |
Surface Treatment | Black painting/varnished surface,anti-corrosion oil, galvanized |
Pipe end | Plain end |
Marking | As per customer's requirement |
International Standard | ASTM A500, GB/T6728-2002 |
Usage | Mechanical & manufacture, Steel structure,Shipbuilding, Bridging ,Automobile chassis |
Certificate | ISO,BV,API |
ODM/OEM | available |
Grade | C | Mn | Si | S | P | UTS(MPa) | YS(MPa) | EI(%) |
Q235B | 0.12-0.20 | 0.30-0.70 | 0.30 | 0.045 | 0.045 | 375-500 | 235 | 26 |
Q345B | 0.12-0.20 | 1.20-1.60 | 0.20-0.55 | ≤0.045 | ≤0.045 | 510-600 | 345 | 22 |
20#(GB) | 0.17-0.23 | 0.38-0.65 | 0.17-0.37 | ≤0.030 | ≤0.030 | 410-550 | ≥245 | ≥20 |