Yearly Archives: 2022

Longitudinal submerged arc welded pipe (LSAW) is generally made of steel plate as raw material. After different forming processes, double-sided submerged arc welding and post-weld diameter expansion a...

Q345 steel is the replacement of the old grades of 14MnNb, 12MnV, 16MnRE, 16Mn, 18Nb, and other steels, not just the replacement of 16Mn. In terms of chemical composition, 16Mn and Q345 are also diffe...

High-frequency welding is a type of welding method that uses resistance heat generated by high-frequency currents flowing through the continuous contact surface of the workpiece to achieve mutual conn...

With the increasing exploitation of oil and natural gas, the corrosion and protection of oil and gas pipelines have also received more and more attention. CO2 exists in oil and gas formations as a com...

Weld processing: 1. If the gap is too large, the proximity effect will be reduced, the eddy current heat will be insufficient, and the weld will have poor intercrystalline joints, resulting in non-fus...

Method of preventing intergranular corrosion of seamless steel pipe: 1) Reduce the amount of carbon in the steel so that the amount of combined carbon in the steel is lower than the saturated solubili...

Seamless steel pipe products should be applied in strict accordance with the material or performance during application, otherwise it may cause very serious consequences. At present, the application o...

If there are some defects in the seamless steel pipe, it will undoubtedly have a fatal impact on the quality of our products. So how to avoid these defects? Then you need to understand the reasons for...

The pre-treatment process of seamless pipe galvanizing includes five processes: alkali washing, pickling, rinsing, soaking aid, and drying. The following galvanized seamless pipe manufacturers will gi...

Electric resistance welding (ERW Welded Pipe) is used to transport oil, natural gas and other vapor and liquid objects, which can meet various requirements of high and low pressure, and currently occu...