As we all know, the weld quality determines the quality of the pros and cons of the pipe, once the weld pipe stoma, which not only affect the pipeline weld tightness, resulting in pipeline leakage, and will become the trigger point of corros...英国华人论坛
The qualification rate of the steel plate that meets the technical requirements is relatively low. According to the weight of the coil and the actual length of the measured coil unit length, the length of the rolled steel coil is calculated,...英国华人论坛
LSAW steel pipe and SSAW steel pipe are important production processes in the national production and construction. They have many differences, such as material properties, production processes, and features. Here's a specific introduction...英国华人论坛
The weld of the large-diameter lsaw steel pipe for piling is longer than the weld of the straight pipe of the same specification, and the pressure of the spiral steel pipe under the same specification wall thickness. The defect of the weld...英国华人论坛
Are included in the middle of the straight seam steel pipe series 73059000 straight seam steel pipe73059000 EVA straight seam steel pipe73069000 straight seam steel pipe73062000 straight seam steel pipe73062100 straight seam steel pipe73062...英国华人论坛
LSAW steel pipe after heat treatment is a new technology to eliminate residual stress. After the material is preheated before welding to heat treatment temperature and the butt welding process to maintain the temperature of the continuously...英国华人论坛
LSAW steel pipe quality check methods, during which the physical approach is the most commonly used inspection methods, physical examination is the use of physical phenomena to determine or check the method.Magnetic forceMagnetic flaw detec...英国华人论坛
Large Diameter LSAW Steel Pipe generally refers to more than 500 mm diameter straight seam steel pipe, is now the biggest diameter 2020 mm, double seam weld maximum diameter is 1220 mm. Mouth straight seam steel pipe domestic general use of...英国华人论坛
LSAW steel pipe is the strip into the pipe unit, the multi-roll rolling, strip gradually rolled up to form a circular gap open billet, adjust the squeeze roll reduction, so that weld gap control In the 1 ~ 3mm, and make both ends of the wel...英国华人论坛
In the oil and gas pipeline anti-corrosion construction process, LSAW steel pipe anti-corrosion surface treatment is to determine the life of one of the key factors, it is LSAW steel pipe anti-corrosion layer and whether the combination of...英国华人论坛
The production process of the large diameter LSAW steel pipe of hot rolled coil after forming machines, coil deformation for a smooth cylindrical, straight seam welded pipe is a gas pipeline in the common pipe diameters greater than 426m...英国华人论坛
Spiral welded pipe is carbon steel or low carbon alloy steel strip at a certain helix angle (called molding angle) rolled into a tube, and the tube made of welded joints, which can be used to narrow band production of large diameter steel pi...英国华人论坛
First technical mold layout design should be reasonable, thickness should not be too poor, to be symmetrical shape, mold on large deformation deformation to grasp the rules, set aside allowance, on large-scale, fine molds can be used in comb...英国华人论坛
China's original six spiral welded steel pipe plant, namely Baoji Petroleum Steel Pipe Plant, North China Petroleum Steel Plant, Shashi Petroleum Steel Pipe Plant, Ziyang Petroleum Steel Pipe Plant, Shengli Petroleum Steel Plant and Liaoyang...英国华人论坛