Size : 1/2" To 12" (15MM To 300MM) Class/Pressure: #150 To #1500 End Connection : Flange, Buttweld, Socket Weld , NPT, Etc Design Standard : API 6D, ISO 17292, etc Testing Standard : API 598, API 607, ISO 5208, etc Body Material : Carbon Steel,Alloy Steel, Stainless Steel,