Pre-bending and sizing are the main steps within the spiral tube forming process. The primary purpose of pre-bending is always 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 reason for the sizing is to obtain a better diameter of the tube, because the diameter control is definitely the main quality index of the 2pe Coating. one. The right 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 the use of arc thermal energy welding, and manual welding rod arc welding differs: the submerged arc welding in the welding wire is exposed, there is no coating, submerged arc welding is definitely pre-paved welding flux to get welded The submerged arc welding wire extends into the flux, as well as the arc is actually created under the flux. The formation procedure for the submerged arc welding is certainly that the welding wire is in touch with the workpiece.
Following 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 actually created below the arc. Across the arc, the flux melts to make a cavity. The cavity and also 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 that we can’t view it with all the human eye. It could 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, enough 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 the delivery in the spiral welded pipe plant, in order that the production duration of the larger spiral steel pipe is guaranteed, so it is still widely used.
1. Pressure-bearing fluid is mainly used for the X46 welded pipe since the tube blank, and it is often spirally formed in temperature. It is utilized for welding with double-sided submerged arc welding and is mainly used for spiral seam welded steel pipe devices for pressure fluid transportation. The capability of the steel pipe to withstand pressure is strong as well as the welding performance can also be very good. After many different rigorous scientific inspections and tests, the utilization 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 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 since the tube blank, which can be often formed by spiral molding and consists of double-sided submerged arc welding or high-frequency welded steel pipe. It is utilized 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 and 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 variety of strict and scientific inspections and tests, using safe and reliable, large diameter steel pipe, transmission efficiency is also high, and will effectively save the laying pipeline investment. It is actually mainly used 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