Pre-bending and sizing would be the main steps within the spiral tube forming process. The primary function 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 primary purpose of the sizing is to obtain a better diameter from the tube, as the diameter control is definitely the main quality index of the Welded Steel Tube For Oil. one. The right match between pre-bending and sizing is required to get 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 usage of arc thermal energy welding, and manual welding rod arc welding is different: the submerged arc welding in 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 to the flux, as well as the arc is created beneath the flux. The formation procedure of the submerged arc welding is really the welding wire is in touch 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 burn underneath the flux layer, and the welding pool is formed below the arc. Across the arc, the flux melts to create a cavity. The cavity and the pool carry on and advance, as well as the metal behind the pool solidifies to make a continuous weld. This process is carried out under the flux, therefore we can’t see it with the human 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 kind 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 supplies the necessary conditions for your delivery of the spiral welded pipe plant, in order that the production duration of the larger spiral steel pipe is guaranteed, so it will be still popular.
1. Pressure-bearing fluid is principally utilized for the X46 welded pipe as the tube blank, and is also often spirally formed in temperature. It is employed for welding with double-sided submerged arc welding and is also mainly utilized for spiral seam welded steel pipe devices for pressure fluid transportation. The ability in 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, the utilization situation is comparatively safe and reliable. The solid diameter in the steel pipe is big, the transmission efficiency is additionally high, and it may effectively save the investment of laying pipelines. It is actually mainly used for pipelines that transport oil and natural gas.
2. General low-pressure fluid transport is primarily 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 utilized since 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 really is used 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 along with other general low-pressure fluid transport Submerged arc welded steel pipe.
5. The pressure fluid transport is situated on the hot-rolled steel strip for tube blanks, regular temperature spiral molding, high-frequency lap welding method used 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, the usage of safe and reliable, large diameter steel pipe, transmission efficiency can also be high, and may effectively save the laying pipeline investment. It really is 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