In the pipeline non-stop with pressure openings, plugging operations in the field of engineering at the same time to create and maintain the world's largest caliber (2.6 meters in diameter gas pipeline) non-stop belt pressure hole ...

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MORE THAN TEN TECHNICAL PATENTS

The participant of the first domestic hot tapping and plugging equipment in 1982 and the developer and organizer of the various new product ...

In 1982 the first domestic pipeline non-stop open hole

plugging equipment developed by the participants and follow-up of various forms of open-hole plugging

products R & D and organizers, in the user prestige...

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