1. SS Welding Neck Flange 2. Size: 3/8"-160" (DN10-4000) 3. Standard: JIS 4. Material: 304, 316, 304L, 316L 5. ISO9001:2000 Stainless steel Welding Neck flange Our welding neck flanges feature high strength, good toughness, and high resistance to corrosion, high pressure and temperature. The raw materials of them come into carbon steel, stainless steel, and alloy steel, low temperature steel and ...