预制弯管fabricated pipe bend
跨越弯管（^形）cross-over bend
偏置弯管（~形）offset bend
90°弯管quarter bend
环形弯管cirele bend
单侧偏置90°弯管（?形）single offset quarter bend
S形弯管“S” bend
单侧偏置U形膨胀弯管（| ?形）single offset “U” bend
U形弯管“U” bend
双偏置U膨胀弯管double offset expansion “U” bend
斜接弯管mitre bend
三节斜接弯管3-piece mitre bend
折皱弯管corrugated bend
圆度roundness
1.4法兰Flange (FLG）
整体管法兰integral 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 welding flange
承插焊法兰socket welding flange
松套法兰lap joint flange (LJF)
对焊法兰welding neckflange (WNF)
法兰盖blind flange, blind
孔板法兰orifice flange
异径法兰reducing flange
盘座式法兰 pad type flange
松套带颈法兰loose hubbed flange
焊接板式法兰 welding plate flange
对焊环welding neck collar（与stub end相似）
平焊环welding-on collar
突缘短节stub end, lap
翻边端lapped pipe end
松套板式法兰loose plate flange
压力级pressure rating, pressure rating class
压力—温度等级pressure-temperature rating
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tongue 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 roughness height (AARH)
配对法兰companion-flange
螺栓圆bolt circle (B.C.)
弯管，对焊法兰，平焊法兰，承插法兰，螺旋法兰，电标法兰，美标法兰，A105 20# 等
