ASME B16.9, Up to 12aa N.B. all schedules Carbon steel: ASTM/ASME SA234 WPB, WPC, ASME B16.9,Up to 12” N.B. all schedules Carbon steel: ASTM/ASME SA234 WPB, WPC,Alloy steel:ASTM/ASME SA234 WP5, WP9, WP11, WP12, WP22, WP91 Temperture Steel:ASTM/ASME A420 WPL6 WPHY P42,P46,P52,P56,P60,P65,P70 Carbon Steel Pipe Fitting