Plug: the pipe is not needed to plug up the mouth, play a sealing role. Identical with blind plate, head and tube cap.

A product made of concrete plugs for plugging holes. A small cylinder used to block the round hole at both ends of the concrete round hole plate to prevent pouring concrete into the plate hole

A welding plug to close a hole by welding.

Plug is divided into square plug, hexagonal plug, round head plug, the implementation standards are ANSI B16.11,GB/T14383,BS 3799,

A plug, also called a cap, cap, cap, or bulkhead, attached to the outer thread at the end of a pipe to cover the fitting that blocks the pipe. Used to seal the pipeline, the function is the same as the pipe plug, can be directly screwed on the pipe, no other pipe fittings. The plug includes convex plug, conical shell, reduced diameter section, flat cover and tight mouth design. Convex plugs include hemispherical plugs, oval plugs, disc plugs and ball crown plugs.