Stainless Steel, Copper, Aluminum manufacturer / supplier in China, offering ASME ANSI B16.47 Welding Neck DIN 20 50 ANSI Butt Welded Flange Stainless Steel, ANSI B16.5 150lbs/DIN/BS/En/ASME Carbon A105 Stainless Steel 304/ 316 Forging Flange, Custom High Precision Stainless Steel Blind Casting Round Forged Flange Pipe Blank and so on.