For large diameter steel pipe flanges, large diameter steel pipe flanges prices, large diameter steel pipe flanges factory production of stainless steel flanges, carbon steel flanges, alloy steel flanges professional manufacturers. Professional production: stainless steel welded flange, welded flange, flange. Production range: DN10mm-4100mm pressure PN0.25-250mpa flange material: 20, Q235, 16Mn, 15CrMo, 1Cr18Ni9Ti, 304,304 L, 316,316 L. Also can produce carbon steel, alloy steel. Executive Standard: HG20583-HG20595, ANSI, JIS, DIN, GB, SHJ, HGJ and other standards, and can be based on customer demand for design and production. Welcome friend you guidance, to inquire!