Posts by wilsonpipeline

Analysis of cracking cause of hydraulic pressure test of P110 oil casing pipe: through analysis of chemical composition, fracture analysis and metallographic examination of the material, abnormal crac...

Hydrostatic pressure test is an indispensable link in the manufacturing process of steel pipes, and its role is to detect the anti-leak function of steel pipes under the standard test pressure and tim...

The selection of seamless steel tube welding methods should be based on the material and wall thickness of the seamless steel pipe. Because different welding methods have different arc heat and arc fo...

J55 oil jacket fusion zone defect: After the ERW oil jacket, the welded pipe in the heat affected zone of the fusion line was found to be unqualified. Metallographic analysis, scanning electron micros...

Most of the seamless steel tubes produced now use hot rolling technology. Because of the high temperature, the deformation resistance is relatively small. Generally, the steel plate is used to complet...

Causes of whitening on the surface of galvanized steel strip   If a layer of condensed water is adhered to the surface of the galvanized layer, it reacts with oxygen, carbon dioxide, hydrocarbons, sul...

"ERW steel pipe" is a straight seam resistance welded pipe, abbreviated as ERW. It is used to transport vapor and liquid objects such as oil and natural gas, which can meet various requirements of hig...

Welded pipe can be pided into ERW, SSAW, LSAW, EFW: ERW: Electric resistance welding pipe   EFW: Electric fusion welding pipe   SSAW: Spiral submerged arc welding pipe  LSAW: Longitudinal submerged ar...

Square rectangular tubes are popularized and applied with high-pressure air-cooling quenching technology. Foreign heat treatment manufacturers pay more attention to the cooling during heat treatment o...

After the production of the casing pipe and the pipeline, the surface is generally sprayed with anti-rust paint, and the outer surface of the pipe is sprayed with a prominent logo according to the API...