... , WB36, SA106, ST45.8- and so onGB, ASME10-1400mm, 0.5-200mmWidely used in ship,liquid service,ptroleum craking,chemical ... ,etc.Stainless Steel Pipe300 SeriesGB,JIS,ASTM, DIN6-720mm, 0.5-65mmWidely used in made mechamical parts and engeenering structures ... & large pipes conveying fluidGalvanized Steel PipeQ195-Q235GB,ASTM20-165mm,0.5-16mmWidely used in the construction,pipe of industrial,water ...