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EN 1092-1-11 WN-RF BW WN PN16 DN800 Butt Welded CS A105 Carbon Steel Weld Neck Flange
Butt-welding flange has distinctive structural features, it has a significant long neck structure, its common materials are carbon steel 20 #, 16MN, A105, stainless steel 304, 316, 321, 22053, alloy steel 15CRMO, 1CR5MO, A182 F11, A182 F91, 09MNNID, A350 LF2, A350 LF3, etc., the flange The flanges are widely used in domestic PetroChina, Sinopec, China National Offshore Oil Corporation (CNOOC), West-East Natural Gas Pipeline, Zhongsha Gulei Project, etc. This neck plays a pivotal role in the pipeline connection system.
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