管壁，其保持上述卷材用万向接头，并且封闭上述管的靠上述卷材用万向接头的一侧；
The pipe wall holds the universal joint, and closes end of the tube close to the universal joint.
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。
The utility model belongs to a scope of electric pipe connection pieces, in particular to a muff-coupling clamping closed galvanized steel conduit joint device.
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