A.焊接 B.卡箍 C.螺紋 D.法蘭
A.65mm B.25mm C.150mm D.250mm
A.壓井、放空,卸生產(chǎn)閘門、關(guān)套管閘卡箍,卸大法蘭螺絲即可維修 B.壓井,卸生產(chǎn)閘門、關(guān)套管閘卡箍,卸大法蘭螺絲即可維修 C.壓井、放空,關(guān)閉生產(chǎn)閘門、卸掉卡箍螺絲,大法蘭螺絲即可維修 D.壓井、放空,關(guān)直通,關(guān)生產(chǎn)閘門、卸大法蘭螺絲即可維修