we can supply 无缝方管 新中联特钢 Here are brief introduction of our company: We are specialized in making Square Steel Tube, the specification range 100*100mm-400*400mm, with wall thickness between 6mm-20mm. Meanwhile we are also able to make other kinds of products with complex cross section and various standards such as Ellipse tube, semicircle tube, arch tube, fan-shaped tube, triangle tube, hexagon tube, eightangular tube and so on. 我公司专业生产无缝、直缝(焊接)方管矩形管规格:100*100-450*450壁厚5-25mm。矩形管:100*200-500*300厚壁6-30mm材质:Q235、Q345B,执行标准:GB/T3094-2000、GB/T6728-2002、日标、德标、美标ASTM等
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