Standard and Scope: Size: 1 / 4 "to 2"Pressure: CLASS150,CLASS300,CLASS600, CLASS800, CLASS1500, CLASS 2500,PN16~PN160 Material: Carbon Steel (A105, LF2), Stainless Steel(F304, F304L, F316, F316L), Duplex(F51, F55),Alloy(F1, F5, F5A, F9, F11, F22)Design and manufacture: API602, ASME B16.34, BS 5352Pressure Test: API 598Tag: MSS SP-25 Connection: SW Socket welding ends according to ASME B16.11                             BW butt wend by ASME B16.25                             NPT threaded connector according to ASME B1.20.1Design feature:OptionalWelded bonnet, Bolted bonnet, Integral flange, Pressure sealing, Extended stem, Bellow Seal