Yearly Archives: 2022
Forming Process of LSAW Steel Pipe (UOE vs JCOE)
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...
Steel Pipe Material 16Mn vs Q345
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...
Process Flow and Precautions of High Frequency Welded Pipe(ERW) Production
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...
Research on C02 and H2S Corrosion of Oil and Gas Pipelines
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...
Welding Seam Treatment and Process Characteristics of Spiral Pipe
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
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...
Application Range of Seamless Steel Pipe
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...
Features and Causes of 8 Defects of Seamless Steel Pipe
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...
What are the Processes of Seamless Pipe before Galvanizing?
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 Welded (ERW) Pipe Manufacturing Process
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...
