Seamless Alloy steel pipe/Fittings 1)ASME/ASTM A213 T5/A335 P5) and his derivative fittings(Elbow,Tees..); 2)ASME/ASTM A213T12,T11/A335 P12,P11 and his derivative fittings(Elbow,Tees..); 3) ASME/ASTM A213T9/A335 P9 and his derivative fittings(Elbow,Tees..); 4).ASTM A213 T22/A335 P22 and his derivative fittings(Elbow,Tees..); 5).ASME/ASTM A213T91(A335 P91), and his derivative fittings(Elbow,Tees..); 6).12Cr1MoV,1Cr5Mo,34CrMo4,etc. Seamless and welded Carbon steel pipe and fittings 7.A106A/B/C(ST45.8/III,20G) A333(A334) Gr.1,Gr.6,Gr.3 ASTM A179.A53 GR.A/B/C,DIN17179,DIN2448 ST37,ST52. 8. API 5L series. Seamless or Welded Stainless steel pipe and fittings 9.High tem stainless steel tube:TP304 series,TP321 series,TP316 series,TP347H