... 6 inch 2Meterial: 304,316,304L,316L, etc. Stainless Steel Threaded Pipe Fittings1Size: 1/8 inch to 6 inch2Meterial ... T21635 ,HG/T21631.3. Material: Stainless Steel, Nickel Copper, Carbon Steel, Low Alloy Steel, Alloy Steel.Stainless Steel material:A403-WP304,A403-WPB304L,A403WP316, ... ,A403-WP321,A403-WP321H4.Usage:use for petroleum,chemical,nuclear,power,shipbuilding,papermaking,food,water,gas,medicine, ...