The utility model belongs to a scope of electric pipe connection pieces, in particular to a muff-coupling clamping closed galvanized steel conduitjoint device.
本实用新型公开了属于电气管线连接件范围，特别涉及一种套接紧定式封闭型镀锌钢导管接头装置。
2
Joint fissures and various primary fractures are mainly developed in volcanic conduit facies.
火山通道相主要发育节理缝和各种原生裂隙。
3
Waterproof sealing of municipal project, sewage conduit, sealing of dilatation joint of tunnel and road project, adhesion and sealing of ceramics.