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Metal elements and functions required in the production of stainless steel: Nickel: Nickel is a very important core element in stainless steel. It can improve the strength and toughness of steel and ...

There are a lot of stainless steel pipes on the market, and there are many brands. It is very difficult for lay people to identify the quality. This gives some stores the opportunity to deceive users,...

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...

The J55 casing pipe coupling phosphating process adopted by the J55 petroleum casing coupling supplier is chemical degreasing, acidic rust removal, chemical degreasing (secondary) water washing, acid ...