... 4)Payment: T/T,L/C or negotiable ASTMA53/A106 Gr.B carbon seamless steel pipe Our main products.Carbon SteelASTM ... /ASME A 53 GR. A & B , ASTM A 106 GR. A , B & C .API 5L GR. B, API 5L X 42 ... /X 80 PSL1,PSL2 ETC ,ASTM A333 GR.1 TO GR.6Alloy SteelASTM / ASME A 335 GR P 1 , P 5 , P 9 ... , sunny zone, central north road, Tanggu , Tianjin , China ASTMA53/A106 Gr.B carbon seamless steel pipe