Shandong Province Liaocheng City Zhongxing Steel Pipe Co.,Ltd. It is my honor to have a chance to introduce our company pipes as following Our factory can produce below OD168mm seamless steel pipes. We are in steel pipes line 25 years and have 6 years export experience. We keep cooperation with many good reputation steel pipe factories in China. We can supply these pipes, please inform me if you have inquiry about these. 1> seamless steel pipe Size: OD 1/8 inch --14 inch, wall thickness 2mm --60mm. 2> Thick-walled seamless steel pipes, Size: 203mm-800mm, thickness: 30mm-100mm 3> ERW steel pipe Size: OD20mm to 820mm, wall thickness: 4mm to 30mm The material we can supply: API 5L GR.B X42 - X70 ASTM A106/A53 GR.B DIN1629 / DIN2391 ST37 ST44 ST52 EN10305 E215, E235, E355 ASTM A519 1010, 1020, 1035, 1045, 4130, 4140 DIN17175 ST35.8, ST45.8 ASTM A179, ASTM A192 A335 P11 P22 P91 Sincerely hope to establish business relationship with your esteemed company in the near future. And I believe both of our business will be blooming after our cooperation. Looking forward to your favorable reply soon!