Pre-bending and sizing are definitely the main steps in the spiral tube forming process. The main function of pre-bending would be 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 primary reason for the sizing is to obtain a better diameter of the tube, as the diameter control is definitely the main quality index of the SSaw Structural Pipe. one. A suitable match between pre-bending and sizing must get an ideal steel pipe blank.
This is a quick discussion on the formation process and characteristics of submerged arc welding of galvanized spiral steel pipes with 630*3 ribs. The principle of submerged arc welding: Submerged arc welding is using arc thermal energy welding, and manual welding rod arc welding is unique: the submerged arc welding of the welding wire is exposed, there is no coating, submerged arc welding is definitely pre-paved welding flux to be welded The submerged arc welding wire extends to the flux, as well as the arc is created beneath the flux. The development process of the submerged arc welding is certainly that this welding wire is in contact with the workpiece.
Right after the start button is pressed, the welding wire as well as the workpiece are energized, and also 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 shed beneath the flux layer, and also the welding pool is actually created below the arc. Across the arc, the flux melts to form a cavity. The cavity as well as the pool still advance, and also the metal behind the pool solidifies to make a continuous weld. This procedure is performed beneath the flux, so we can’t look at it with the human eye alone. It may 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; the production auxiliary time is less, time for changing the welding rod is saved; the welding conditions are clean and no spatter, as well as the cleaning time is saved; the caliber of the welding seam is high. In addition, it supplies the necessary conditions for your delivery from the spiral welded pipe plant, so the production duration of the big spiral steel pipe is guaranteed, therefore it is still commonly used.
1. The stress-bearing fluid is mainly utilized for the X46 welded pipe as the tube blank, and it is often spirally formed in temperature. It really is used for welding with double-sided submerged arc welding and is mainly employed for spiral seam welded steel pipe devices for pressure fluid transportation. The capacity from the steel pipe to resist pressure is strong and the welding performance is also great. After a variety of rigorous scientific inspections and tests, the utilization situation is relatively safe and reliable. The solid diameter in the steel pipe is big, the transmission efficiency can also be high, and it may effectively save your time and money of laying pipelines. It is mainly employed for pipelines that transport oil and natural gas.
2. General low-pressure fluid transport is principally hot-rolled steel coiled tube blanks, often temperature spiral molding, using high-frequency lap welding way of general low-pressure fluid conveying spiral seam high-frequency welded steel pipe. Welding steel with spiral welds.
3. The rolled steel strip is used as the tube blank, which is often formed by spiral molding and is made of double-sided submerged arc welding or high-frequency welded steel pipe. It is actually utilized for the xqrkab pile steel pipe for civil building structures, wharves, and bridges.
4. The typical low-pressure fluid transport is hot rolled steel strip coiled tube, regular temperature spiral molding, using double-sided automatic submerged arc welding or single-sided welding technique for water, gas, air and steam as well as other general low-pressure fluid transport Submerged arc welded steel pipe.
5. The pressure fluid transport is based on the hot-rolled steel strip for tube blanks, regular temperature spiral molding, high-frequency lap welding method utilized for pressure fluid transmission spiral seam high-frequency welding steel pipe device. The steel tube has strong pressure bearing capacity and good plasticity, which facilitates welding and processing. After a number of strict and scientific inspections and tests, the usage of safe and reliable, large diameter steel pipe, transmission efficiency can also be high, and will effectively save the laying pipeline investment. It really is mainly utilized for the laying of pipelines connecting petroleum, natural gas, etc.
Rise Steel consisted of subsidiaries of Cangzhou Spiral Steel Pipe Factory, Hebei All Land Steel Pipe Factory, Hebei Yuancheng Steel Pipe Factory, Cangzhou Xinguang Thermal Insulation Pipe Factory .The company is located in Tianjin port, the largest comprehensive port and an important foreign trade port, engaging in the management of steel pipe production nearly 20 years.The company is a high-tech enterprise integrated with independent production and sales business.We are committed to the concept of “innovation, technology and service”.
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Hamer Chen:+86 18202505824
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