Pre-bending and sizing are definitely the main steps within the spiral tube forming process. The key purpose 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 purpose of the sizing is to obtain a better diameter of the tube, as the diameter control is the main quality index of the SSaw LSaw ERW Line Pipe. one. The right match between pre-bending and sizing must obtain an ideal steel pipe blank.
This is a brief discussion on the formation process and characteristics of submerged arc welding of galvanized spiral steel pipes with 630*3 ribs. The key of submerged arc welding: Submerged arc welding is the use of arc thermal energy welding, and manual welding rod arc welding differs: the submerged arc welding from the welding wire is exposed, there is no coating, submerged arc welding is definitely pre-paved welding flux to become welded The submerged arc welding wire extends in to the flux, and also the arc is created underneath the flux. The development procedure of the submerged arc welding is really the welding wire is in touch with the workpiece.
After the start button is pressed, the welding wire as well as 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 shed beneath the flux layer, as well as the welding pool is formed below the arc. Around the arc, the flux melts to create a cavity. The cavity and also the pool continue to advance, and also the metal behind the pool solidifies to create a continuous weld. This procedure is conducted beneath the flux, so that we can’t see it with the human eye. It may be seen with X-ray photography.
Because the spiral steel pipe adopts the welding technology of submerged arc automatic welding, besides this type of high production efficiency; 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 caliber of the welding seam is high. Additionally, it offers the necessary conditions for that delivery of the spiral welded pipe plant, so the production period of the larger spiral steel pipe is guaranteed, so it will be still popular.
1. Pressure-bearing fluid is mainly used for the X46 welded pipe because the tube blank, and is often spirally formed in temperature. It is actually used for welding with double-sided submerged arc welding and is also mainly employed for spiral seam welded steel pipe devices for pressure fluid transportation. The ability from the steel pipe to stand up to pressure is strong and the welding performance is also excellent. After a number of rigorous scientific inspections and tests, the utilization situation is fairly safe and reliable. The solid diameter in the steel pipe is large, the transmission efficiency is additionally high, and it may effectively save your time and money of laying pipelines. It really is mainly used for pipelines that transport oil and natural gas.
2. General low-pressure fluid transport is mainly 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 new rolled steel strip is used because the tube blank, which can be 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 overall 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 way of water, gas, air and steam as well as other general low-pressure fluid transport Submerged arc welded steel pipe.
5. The pressure fluid transport relies on the hot-rolled steel strip for tube blanks, regular temperature spiral molding, high-frequency lap welding method employed 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 use of safe and reliable, large diameter steel pipe, transmission efficiency is additionally high, and will effectively save the laying pipeline investment. It is actually 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”.
Address: APT. 1202 BLDG. B Kuang Shi Guo Ji Plaza, Tianjin Free Trading Testing Zone (Business Center), Tianjin, China.
Hamer Chen:[email protected]
Eason Gao: [email protected]
Miao lin: [email protected]
Amy Shi: [email protected]
Hamer Chen:+86 18202505824
Eason Gao: +86 18622403335
Miao lin: +86 13251845682
Amy Shi: +86 18630426996