There are two possibilities for the formation of surface defects of spiral steel pipes: one is that the workpiece itself is not plastic in the process of deformation, resulting in cracks and outward folding; the other is that the surface of the material is oxidized to cause surface defects, and the

The prefabricated submerged arc steel pipe fittings and assemblies in the processing plant must be completed, that is, all the welds have been welded, the flange joints are installed, and all the flange bolts of the long-term backing plate are worn and tightened. The comparison design value of the e

The main process parameters of high-frequency straight seam welded pipes include welding heat input, welding pressure, welding speed, opening angle, the position and size of the induction coil, and the position of the resistor. These parameters have a greater impact on the improvement of high-freque

Product Name: Seamless steel pipeMaterial: Carbon steelDiameter: 83mmQuantity: 1000 tonsApplication: It is used for the energy project.Thanks to the new customer in Egypt. Wish many cooperations have given the customer full confidence in THREEWAY STEEL in the future.

1. Thermomechanical treatment. High-temperature thermomechanical treatment can increase the yield ratio and elastic limit of spiral steel pipes. Improve the comprehensive mechanical properties, fatigue properties, and stress relaxation properties of spiral steel pipes. Reducing the ductile-brittle t

Rough polishing and fine polishing are the two major surface processing techniques for parts processing, and different supplies correspond to different product surfaces. Therefore, when choosing the surface processing technology, it is also necessary to choose according to the use environment and oc

Precautions for steel pipe pile construction1. Before steel pipe pile construction, it is necessary to measure and set up the line, which needs to be carried out by professional surveying personnel, and all the axes and pile positions are set up.2. After the pile machine is in place, the pile frame

1. LSAW steel pipes should be submitted for acceptance in batches, and the batching rules should meet the requirements of the corresponding product standards.2. The inspection items, sampling quantity, sampling location, and test method of LSAW steel pipes shall be following the provisions of the co

Product: Metal coated formable steel. Material: EN10346. Specification: 1.5mm*1000mm*3000mm. The new customer in the Mexico construction industry product will be shipped. Here is the product before shipping.

Surface treatment method of anticorrosive spiral steel pipe1. The surface of the anticorrosive spiral tube is cleaned with solvents and emulsions. Remove the organic matter on the surface of the spiral tube, but it cannot remove the surface rust, oxide scale, welding flux, etc.2. Use a wire brush, s