20×20 black square erw steel pipe Outer Diameter 20*10-400*600mm Wall thicknes 0.8-12mm Length 1-12m customized Material Q195, Q215 ,Q235 ,Q345, Q195-Q235 Standard ASTM A500,GBT 6728,GB T 3094 Zinc Coating Hot Dip Galvanzied:>200g/m2 Certificate ISO 9001-2008 Technique Welded / ERW / Cold drawn Q: Are you trading company or manufacturer ...

China black square and rectangular steel pipe specifications square Steel Tube (mm) Rectangular Steel Tube (mm) Round Steel Tube (mm) 10×10×0.6~3.0 10×20×0.6~3.0 6×0.6~1.0 15×15×0.6~3.0 20×30×0.6~3.0 12×0.6~1.5 20×20×0.6~3.0 20×40×0.6~3.0 13×0.6~1.5 25×25×0.6~3.0 25×50×0.6~3.5 16×0.6~2.0 30×30×0.6~3.5 30×50×0.6~3.5 19×0....

Carbon Steel Welded Black square pipe Product name GX 100×100 welded construction structure square tube material Technique Longitudinal Electronic Resistance Welding (ERW) High Frequence Welding (HFW) Material Quality Steel Grade Q195 Q215 Q235 Q345 A53 A106 S355 etc. Material Type Available in cold rolled and hot rolled Size W.T. 1.0mm-40....

In Tianjin, there are as many as hundreds of manufacturing enterprises, engaged in the supply of raw materials, processing equipment, steel pipe production, as well as various post-treatments for various types of Tianjin steel pipes in the current steel pipe market. Tianjin pipes have quite complete range of steel pipe specifications, widely use...

China Black Iron Square And Rectangle Tube Product name 18×18 Asian Black Iron Square Tube/Black Square Steel Pipe Outer diameter 10*10mm-600*600mm Wall thickness 0.6mm-25mm Length 5.8m-12m Surface Treatment Black,oiled Package Standard export packing in bundles Standard EN3,BS 1387,BSEN10255,ISO 65,AS1163,GB/T3091 Tolerance: 1.On specified...