The products of our company are divided into two categories: seamless steel pipe and welded steel pipe.Carbon Steel Seamless Steel Pipe1.Seamless steel pipe for general use: ASTM A 53 GR.B,Steel Grade: SA53B and specication 2"-28", 60.3-711.2mm2.Seamless steel pipe for high temperature:ASTM A 106 GR.B,Steel Grade: SA106B and specication 2"-28", 60.3-711.2mm3.Pipeline: API SPEC 5L. 5CTSteel Grade: B,X42,X46,X52 and specification 2"-28", 60.3-711.2mm4.Seamless steel pipe for low temperature of -40C-101C, ASTM A333,Steel Grade: GR.A,GR.1,GR.7,GR.3 specication 2"-28", 60.3-711.2mm5.Seamless steel pipe DIN2448/1629,DIN17175-1979, German standard,Steel Grade: st37,st42,st52,st35.8-st45.8/1, specication 2"-28", 60.3-711.2mm;Carbon Steel Welded Steel Pipe1.American standard, ERW high frequency welded pipe ASTM A 106 A53,Specification: 4"-24" 114.3-609.6mm.2.British standard, ERW high frequency welded pipe BS 1387,Specification: 4"-24" 114.3-609.6mm.