The long welding neck flange is actually an extended form of the neck butt welding flange.
Application scope: boiler pressure vessel, petroleum, chemical, shipbuilding, pharmaceutical, metallurgy, machinery, food and other industries
Shanxi Haokun flanges specializes in the production of JIS stainless steel long welding neck flanges:
stainless steel(SS) JIS B2220 BL 5K
stainless steel(SS) JIS B2220 BL 10K
stainless steel(SS) JIS B2220 BL 16K
stainless steel(SS) JIS B2220 BL 20K
stainless steel(SS) JIS B2220 BL 30K
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