Pipe flange is for two pipes joint works, pipe flange have norms of DIN EN1092-1 BS4504 SANS1123 GOST33259-2015 JIS B2220 KS B1503 and ANSI B16.5 AWWA C207 etc, flanges types have slip on, welding neck, plate, blind, socket weld, lap joint, loose, threaded etc, pipe flange pressure have PN6 PN10 PN16 PN25 PN40 5K 10K 16K 20K 30K and class 150 300 600 900 1500 2500.
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