Pre-bending and sizing are the main steps within the spiral tube forming process. The key reason for 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 key purpose of the sizing is to acquire a more accurate diameter from the tube, since the diameter control is the main quality index of the ERW Galvanized Steel Pipe. one. The right match between pre-bending and sizing must get an ideal steel pipe blank.
The following 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 is different: the submerged arc welding from the welding wire is exposed, there is absolutely no coating, submerged arc welding is definitely pre-paved welding flux to get welded The submerged arc welding wire extends to the flux, as well as the arc is actually created under the flux. The development procedure for the submerged arc welding is certainly that the 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 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 lose beneath the flux layer, as well as the welding pool is formed beneath the arc. Around the arc, the flux melts to create a cavity. The cavity and the pool carry on and advance, and the metal behind the pool solidifies to create a continuous weld. This process is conducted underneath the flux, therefore we can’t look at it with the naked eye. It may be seen with X-ray photography.
Since the spiral steel pipe adopts the welding technology of submerged arc automatic welding, besides this type of high production efficiency; the development 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 that delivery in the spiral welded pipe plant, so that the production duration of the big spiral steel pipe is guaranteed, so it will be still popular.
1. The pressure-bearing fluid is principally utilized for the X46 welded pipe as the tube blank, and it is often spirally formed in temperature. It really is utilized for welding with double-sided submerged arc welding and it is mainly utilized for spiral seam welded steel pipe devices for pressure fluid transportation. The ability from the steel pipe to stand up to pressure is strong as well as the welding performance can also be very good. After a number of rigorous scientific inspections and tests, making use situation is fairly safe and reliable. The solid diameter from the steel pipe is big, the transmission efficiency is additionally high, also it can effectively save the investment of laying pipelines. It is mainly employed for pipelines that transport oil and gas.
2. General low-pressure fluid transport is primarily hot-rolled steel coiled tube blanks, often temperature spiral molding, using high-frequency lap welding technique for general low-pressure fluid conveying spiral seam high-frequency welded steel pipe. Welding steel with spiral welds.
3. The rolled steel strip is utilized because the tube blank, that is often formed by spiral molding and is made of double-sided submerged arc welding or high-frequency welded steel pipe. It is actually employed for the xqrkab pile steel pipe for civil building structures, wharves, and bridges.
4. The general 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 method 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 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 usage of safe and reliable, large diameter steel pipe, transmission efficiency is also high, and will effectively save the laying pipeline investment. It really is mainly employed for the laying of pipelines connecting petroleum, 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