Apparatus for instantaneously terminating movement of flow...
Apparatus for internally checking well pipe bore and for automat
Apparatus for mounting a pipe in an opening in a pressure vessel
Apparatus for plugging a pressure piping system
Apparatus for sealing pipe
Apparatus for securing written information to tubular goods
Apparatus for stopping the flow of natural gas
Apparatus for the abandonment of a branch main
Apparatus for the protection of tubes particularly tubes for dri
Apparatus for transferring line travel device from one pipeline
Arch end cap
Arrangement for closing off fluid passages
Assembly for sealing and pressure equalization of a submersible
Assembly for sealing and pressure equalization of a submersible
Assembly of a closing baffle inside a tubular member
Assembly of mouthpiece, stopper and lock for shutting off a pipe
Auxiliary device for repairing a pipeline