... JISB2313,BS, GB, ISOmaterialCarbon steel (ASTM A234WPB,A234WPC,A420WPL6, ect)Stainless steel(ASTM A403 WP304,304L,316,316L,321,ect ... )Alloy steel(ASTM A234 WP12,WP11,WP22,WP5,WP9,WP91, ect) ... ,A grooving machine,Tube spraying grit treatment,etctestingDircet reading spectrometer,Mechanical testing,Super living inspection,Magentic particle inspection,etc pipe fitting ...