Welding Neck Flange, Carbon Steel Flange, Pipe Flange manufacturer / supplier in China, offering Forged Welding Flanges with Superior Tensile and Corrosion-Resistant Features, ANSI B16.5 Flange: Heavy-Duty Design for Maximum Performance, Forged Welding Neck Flanges with High Corrosion Resistance and Tensile Strength and so on.