法兰 Flange (FLG)整体法兰in tegral flan ged带颈平焊法兰Slip On Fla nge ( SO)承插焊法兰socket weldi ng flange整体铸造法兰In tegrally cast flan ges对焊法兰weldi ng n eck flange板式平焊法兰Weldi ng plate flange法兰密封面flange facings整体管法兰in tegral pipe flange钢管法兰steel pipe flange螺纹法兰threaded flange滑套法兰（包括平焊法兰）slip-on flange (SO); slip-on weldi ng flange松套法兰lap joint flange (LJF)法兰盖bli nd flan ge, bli nd孔板法兰orifice flange异径法兰reduci ng flange盘座式法兰pad type flange松套带颈法兰loose hubbed flange焊接板式法兰weldi ng plate flange对焊环welding neck collar (与 stub end 相似)平焊环weldi ng-on collar突缘短节stub en d, lap翻边端lapped pipe end松套板式法兰loose plate flange压力级pressure rati ng, pressure rati ng class压力一温度等级pressure-temperature rat ing法兰密封面，法兰面flange facing突面raised face (RF)凸面male face (MF)凹面female face (FMF)榫面ton gue face槽面groove face环连接面ring joint face全平面；满平面flat face; full face (FF)光滑突面smooth raised face (SRF)法兰面加工facing finish粗糙度roughness光滑的smooth齿形serrated均方根root mean square (RMS)算术平均粗糙高度arithmetical average rough ness height (AARH)配对法兰compa nion-flange螺栓圆bolt circle (B.C.)法兰的类型要根据连接形式和密封面型式来分,连接形式：螺纹连接ThreadedTh带颈对焊weld NeckWN带颈平焊Slip-O nSO板式平焊platePL承插焊 sock weldedSW对焊环松套 Pipe Joi nt / Stub End PJ/SE 平焊环松套 pipe Joi nt / Plate Ri ng PJ/PR 整体法兰 In tegrated Fla ngeIF法兰盖或盲法兰Bli nd Fla ngeBF松套法兰LJBL法兰盖密封面型式：突面 Raised FaceRF凹凸面 Male and FemaleMFM榫槽面 Tongue and Groove TG 全平面 Flat FaceFF环连接面Ring Joi ntRJ