1.Size:1/2"-78" 2.Material:Stainless Steel 3.Standard: ANSI, BS, DIN, UNI, JIS, GB ... , 316, 304L, 304,Class150#,300#,400#,600#,900#Production processraw material--cutting--heating--forging--heat treatment--maching--inspection. ApplicationPetroleum, chemical, power ... , competitive price and best service. Stainless Steel Slip-on Flange-pipe fittings