Huashida's seamless hot melt sleeve successfully won the bid at the PetroChina bidding site. Recently, at a bidding site for pipeline connection and patching pipe fittings held by PetroChina Tianjin Branch, Zhang Yonggao, a senior technician from Qingdao Huashida Machinery Co., L

2024/05/0314:41:33 news 1569

Huashida seamless hot melt sleeve successfully won the bid at the PetroChina bidding site

Recently, at a bidding site for pipeline connection and joint fittings held by PetroChina Tianjin Branch, I saw Zhang Yonggao, a senior technician from Qingdao Huashida Machinery Co., Ltd. , took out the new seamless hot melt sleeve developed by the company, and correctly connected the two ends of the pipe together in the specified order. The five test connection joints successfully passed the 30-minute air-closed pressure test at one time. , the expert panel members who conducted the on-site evaluation spoke highly of it.

This bidding activity was commissioned and organized by the French company Total. The purpose is to find qualified suppliers and pipe fittings for Φ770mm pipeline connection and patching, because the Uganda 1,500-kilometer oil pipeline project is about to start. In order to ensure the reliability of the quality of pipe connections and joints, this bidding uses pipe fittings provided by suppliers. They compete on the same stage on the spot and conduct pressure and air-holding tests on the spot. An expert group composed of Total and Sinopec will conduct the evaluation. The winner will win. .

In this bidding activity, Huashida participated in the bidding for the new seamless hot fusion sleeve launched by the company. This new seamless hot fusion sleeve has both electric heating fusion sleeves and heat shrink sleeves and pipe fittings. Process characteristics, the appearance is bright and discernible, and the internal properties are excellent. The base material is extruded from to form , and is processed after irradiation, which can increase the strength by more than 20%.

The operation process is to first cover the outer walls of both ends of the pipes that need to be connected with nickel-chromium electric heating wire mesh, then put on a new seamless hot melt sleeve, and use a flame gun to bake it up and down. After the hot melt sleeve shrinks, it can adhere to the pipe. together. On this basis, the power is then turned on to melt the nickel-chromium electric heating wire mesh to make the connection between the outer wall of the pipe and the seamless hot-melt sleeve tighter. An additional layer of protection is added to make the repair more reliable. Since no overlap is required, there are no strict technical requirements for welding workers. The construction process is simple and easy to operate. It has revolutionized the traditional pipe interface welding mode, but the welding quality is reliably guaranteed. Especially for pipeline projects located in harsh climate conditions and used for long-distance oil and gas transportation, the safety of use has been greatly improved, and the stability of the operating system has been qualitatively improved.

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