http://www.steelfittings-flange.comExport DepartmentDaisey GuoPhone: +86 - 21 - 31125201/+86 - 18217515664Fax: +86 - 21 - 51860752
No.1518, Jiangqiao Industrial Zone, Shanghai, China.ShanghaiChina, 201800Web Page Link: https://www.toboc.com/steelfittingsflange.aspxD&B D-U-N-S Number: 2365791204
Long weld neck flange(LWN flange) is also call integral flange, it means a welding neck flange has a very long neck.The long weld neck flange should be butt welded with the pipes, it means the neck dimensions is same with the matching pipe, same diameter and wall thickness , commonly the long weld has a plain end, not a bevel end for welding . Except the neck, the LWN flange has a same dimensions with the welding neck flange. In addition, there are also the type LWN Heavy Barrel (HB) and the Equal LWN Barrel (E) they have a different shape and a thicker “Wall” which name is Nozzle .
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ESTAN PIPE FITTINGS CO., LTD.