we can supply all kinds of prime seamless steel pipes. if you are interested, pls do not hesitate to contact me! Not only to manufacture various steel and steel products as per International Standard, but our company can also empolder, develop and manufacture some other non-Standard. The seamless steel pipes we can supply are as follows: outer diameter* wall thickness(mm) 10*2 68*3.5-8 38*8-10.5 12*2 70*3.5-8 40*8-10.5 14*2-3 78*3.5-8 42*8-11.5 16*2-3 76*4-8 45*9-11.5 18*2.5-3 80*4-8 48*9-11.5 20*2.5-3 83*4-9 51*9-11.5 21*3 89*4-12 54*9-11.5 22*2.5 95*5-12 57*9-12 22*3 102*5-12 60*9-12 25*2.5 108*5-12 63.5*9-12 25*3-4 114*5-12 65*9-16 27*3-6 121*5-12 70*9-16 28*3-6 127*5-12 76*9-16 30*3-6 133*4.5-12 83*10-16 32*3-7 140*4.5-12 89*13-16 34*3-7 152*4.5-12 95*13-18 38*3-7 159*4.5-12 102*14-20 40*3.5-7 168*5.5-12 108*14-22 42*3.5-7 180*5.5-12 114*14-22 45*3.5-8 219*6-7 121*14-22 48*3.5-8 219*8-12.7 127*14-22 51*3.5-8 273*6-12.7 133*14-22 54*3.5-8 325*7-12.7 140*14-22 57*3.5-8 355.6*7-12.7 159*14-22 60*3.5-8 377*8-12.7 168*14-25 63.5*3.5-8 406*8-12.7 180*14-25 65*3.5-8 426*8-12.7 219*14-25 457*8-12.7 480*8-12.7 508*8-12.7 530*8-12.7 610*9-18 The standard we can supply are as follows: 1 ASTM: A106, A53 A179 A178 A135 A252 A282 A283 A226 A210 A333, GradeA & B, API5L 2 JIS: G3454, G3461, G3455, G3456, STPY41, STB35, ST42 3 DIN: DIN17175, DIN27911, ST52, ST35.8, ST37, ST45, ST42 4 GB: T8162, T8163, T 3087 Specificaiton: 3/8"-24", wall thickness: SCH10-SCHXXS