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The ability of the steel pipe to withstand pressure is strong

After the steel tubes are rolled, automatic submerged arc welding is used to repair the joints. Before forming, the steel strip is leveled, trimmed, edged, surface cleaned and pre-trimmed. Pre-bending and sizing are the main steps in the spiral tube forming process. The main purpose of pre-bending is to solve the rebound problem of the tube blank, because the size of the rebound directly affects the intrinsic quality of the steel tube; the main purpose of the sizing is to obtain a more accurate diameter of the tube, because the diameter control is the main quality index of the steel tube. one. A suitable match between pre-bending and sizing is required to obtain an ideal steel pipe blank.The following is a brief discussion on the formation process and characteristics of submerged arc welding of galvanized galvanized spiral steel pipes with 630*3 ribs.

The principle of submerged arc welding: Submerged arc welding is the use of arc thermal energy welding, and manual welding rod arc welding is different: the submerged arc welding of the welding wire is exposed, there is no coating, submerged arc welding is indeed pre-paved welding flux to be welded The submerged arc welding wire extends into the flux, and the arc is formed under the flux. The formation process of the submerged arc welding is such that the welding wire is in contact with the workpiece. After the start button is pressed, the welding wire and the workpiece are energized, and the welding wire is returned. Withdrawing, the arc ignites, the welding carriage advances, the welding wire is continuously conveyed downwards, the arc is maintained to burn under the flux layer, and the welding pool is formed below the arc. Around the arc, the flux melts to form a cavity. The cavity and the pool continue to advance, and the metal behind the pool solidifies to form a continuous weld. This process is performed under the flux, so we can’t see it with the naked eye. It can be seen with X-ray photography. Since the spiral steel pipe adopts the welding technology of submerged arc automatic welding, besides this kind of high production efficiency; China Wholesale PPGI PAINT the production auxiliary time is less, the time for changing the welding rod is saved; the welding conditions are clean and no spatter, and the cleaning time is saved; the quality of the welding seam is high.

It also provides the necessary conditions for the delivery of the spiral welded pipe plant, so that the production time of the large spiral steel pipe is guaranteed, so it is still widely used.1.The pressure-bearing fluid is mainly used for the X46 welded pipe as the tube blank, and is often spirally formed in temperature. It is used for welding with double-sided submerged arc welding and is mainly used for spiral seam welded steel pipe devices for pressure fluid transportation. The ability of the steel pipe to withstand pressure is strong and the welding performance is also very good. After a variety of rigorous scientific inspections and tests, the use situation is relatively safe and reliable. The solid diameter of the steel pipe is large, the transmission efficiency is also high, and it can effectively save the investment of laying pipelines.

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