Wing Van,Isuzu Truck,Aluminum Wing Van Chengli Special Automobile Co., Ltd. , http://www.hbfueltanks.com
Pipe loop welding wire is a high-end product in pipe welding. On November 5, 2009, the company listed the X80 girth weld wire project as a major project of the second phase of the West-East Gas Pipeline Second Line Technical Research. Baoji Steel Pipe Co., Ltd. and the China National Petroleum Pipeline Bureau jointly undertake research and development tasks.
In all tests, it is very difficult for the welding wire to deposit metal. Due to the low energy of the gas shielded welding wire, the weld penetration is shallow, and multi-layer and multi-pass welding is required. Filling nearly 70 welds in a narrow groove is very easy to produce welding defects. As long as there is a problem with the weld, it must be polished away. Sometimes a continuous weld for a week, even a qualified deposited metal test panel is not completed. The members of the project team bubbled in the laboratory to check the problem and find the cause all the time, finally making the mechanical properties of the welding wire meet the standard requirements.
In order to carry out the welding wire process performance test, the project team members went to the Science Research Institute of the Langfang Pipeline Bureau twice. After nearly one month of process debugging, they successfully welded qualified welds. The welding wire inspection report shows that the X80 girth weld wire developed by Baoji Steel Pipe has excellent welding performance, arc stability, all-position operation performance and good weld formation, appearance of girth weld is good, and the film is qualified to meet the Q/SY-GJX0110 West Second Pipeline Engineering line welding technical specification.
As the pipe loop welds are high value-added types of welding consumables, the pipeline construction site is basically a few foreign companies' products, and the price of welding wire is higher. The localization of the X80 girth weld wire will break the monopoly of foreign companies and meet the needs of the construction of domestic high-grade steel pipelines.
Not long ago, after the previous process performance, mechanical properties and welding wire deposition metal tests, Baosteel Petroleum Steel Pipe Co., Ltd. developed X80 girth welding wire, the performance can meet the standard requirements, the test was successful.