Pressure class & wt: Sch100/ sch 120/ sch140/ sch 160/ xxs Max. Wt 100mm Materials: Carbon steel: astm a234-wpb, wpc, Stainless steel: astm a403 Wp304, wp304l, wp304h, wp316, wp316l, wp321, wp321h, wp347h, wp317, Duplex steel: astm a815 s31803, 2205, s32750, s32760 Low temp steel: astm a420-wpl6, wpl3, Alloy steel: astm a234-wp11, wp22, wp91 Size range: Seamless dn15 ( 1/2 ) --- dn900 ( 36 ) Welded dn450 ( 18 ) --- dn2500 ( 100 ) Ect