ASTM A500 rectangular steel pipe black pipe Products Square & Rectangular Steel Tube Standard ASTM A500 Steel   grade GR.A, B Size 10×20-400×600 Thickness 1 to 16 Length 1-12 meter Surface   treatment bare,oiled,galvanized Pipe ends Plain Square/ Rectangular Steel Pipe Material Carbon Steel Surface Hot dip galvanized Standard DIN G...

Tianjin Q195 Structural square steel pipe manufacturer Size: Length:40mm width:40mm Wall thickness: 0.4mm~60mm Material: Carbon steel & Low alloy steel Normal steel grade: ASTM A36, A53, A210C, A572 Gr.50, API 5L Gr.A, Gr.B, X42-X65, E235, E355, S195, S235, S355 Technology: Welded technology; Seamless technology Surface treatment: Naked, oil...

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....