閥門法蘭連接突面- raised face 略寫(RF)
閥門法蘭全平面- flat face; full face略寫 (FF)
閥門法蘭凹面 -female face 略寫(FMF);閥門法蘭凸面- male face略寫 (MF);閥門凹凸面-略寫(MFM)
閥門法蘭榫槽面-略寫(TG)
閥門環(huán)墊接頭 -略寫ring joint (RJ)
閥門對(duì)焊連接 -butt welded 略寫(BW)
閥門承插焊 -socket welded略寫 (SW)
美國標(biāo)準(zhǔn)閥門錐管螺紋- American standard taper pipe thread略寫 (NPT)