... 3.Use:water supply,chemical,petroleum industry 1.NameStainless steel welding neck flange2.Standard:GB14976-2002, GB13296-2007, JIS, AISI ... 316, 304L, 304Stanndard:ANSI,BS,DIN,UNI,JIS,GN,etcType:Welding neck flangeProduct name: Stainless Steel Flanges1. Size: 1/2" ... 5. Type: Welding Neck6. Face treatment: Transparent oil, rust-proof oil, hot galvanized7. Process: free forging, plate cutting;8. Packing: ...