... , BS, AS.JIS Weld NeckProduction size(NPS):10~6000mmType:Slip-On, Welding Neck flange, Blind flange, Socket Welding flange, Threaded flange ... (Steel pipe flanges Use:widely used in Petroleum, Chemical industry, Machinery, Electric power and so on pipe joint. Special design available we ... manufacture them according to any drawings. If you are interested in, please don't hesitate to contact us, I'll reply ...