Beijing Dong Xin Da Material Co. Ltd

Beijing dongxinda material co.,ltd. Is one of the most professional steel products supplier. We are providing package services for project and bulk steel pipes sale. The products we are mainly dealing with are alloy/stainless/carbon steel pipes, tubes, fittings and flanges, both seamless and welded types. The following are the items we can offer: 1).stock of seamless steel pipe: including alloy/carbon/stainless steel pipes/tubes. 2). Size range available (seamless) : o.d. 1/8\"- 36\" x thickness 1.75--200 mm (welded): o.d.1/8\" - 80\" x thickness 1.75--50 mm 3). Steel grades available: a. Alloy steel pipe/tube: astm a335 gr. P5, p9, p11, p12, p22, p91; astm a213 gr.t5, t9, t11, t12, t22, t91 b. Carbon steel pipe: astm a106 gr.b, c; astm a53 gr.b; astm a179; astm a210 a1; st37/st45.8 din17175, st52 din1629, st52.4 din1630, gb20#，45# and so on. C. Cylinder pipes: 34crmo4, 37mn d. Pipe line and casing pipes for oil field: api 5l and api 5ct series e. Stainless steel pipe: 304/304l、304h、316/316l、316ti、904l、314、310s、2205（uns31803）、317l、347h、2205、321h and so on. 4). Butt weld and forged fittings 5). Flanges