Standard ASTM and ASME Specifications *Type: Seamless-welded Grade: Gr.1, Gr.2, Gr.3, Gr.7, Gr.9, Gr.11, Gr.12 Sizes: Out Dia.: 16mm-63mm Wall Thickness: 0.5mm-2.5mm Length <15000mm *Type: Seamless Grade: Gr.1, Gr.2, Gr.3, Gr.7, Gr.9, Gr.11, Gr.12 Sizes: Out Dia.: 8mm-114mm Wall Thickness: 0.5mm-4.5mm Length <12000mm