Brass Thread Fittings 1Size: 1/8 inch to 6 inch 2Meterial: 304,316,304L,316L, etc. Brass Thread Fittings1Size: 1/8 inch to ... SH3409,HG/T21635 ,HG/T21631.3. Material: Stainless Steel, Nickel Copper, Carbon Steel, Low Alloy Steel, Alloy Steel.Stainless Steel material ... A403-WP317,A403-WP317L,A403-WP321,A403-WP321H4.Usage:use for petroleum,chemical,nuclear,power,shipbuilding,papermaking,food,water,gas, ...