The high-frequency induction coil of the straight seam steel pipe should be as close as possible to the position of the extrusion roller. The internal stress of the steel pipe is small and evenly distributed, which can effectively prevent stress corrosion cracking, high dimensional accuracy, and fac

The fire-fighting pipeline includes two systems: the fire hydrant system and the water sprinkler system.Stainless steel fire-fighting piping system is a kind of fixed fire-fighting facility widely used in China. Nowadays, 304 stainless steel pipes are used in fire water supply pipes in sprinkler sys

Production temperature of straight seam steel pipe: In the process of producing straight seam steel pipe, the temperature must be strictly controlled, to ensure the reliability of welding. If the temperature is too low, it may cause the welding position to fail to reach the temperature required for

The spiral seam submerged arc welded steel pipe is drilled in rotation and begins to enter the soft formation. Under the action of the tritone, the drill bit first produces elastic shear deformation of the formation and then is removed under the pressure of the tritone. In the simulated environment,

The construction of cement mortar fabric should usually be carried out after the spiral steel pipe is laid, the pressure test is qualified, and the soil is compacted according to the design requirements. Because the steel pipe has small rigidity and a thin wall, the pipeline must be in a stable stat

After the oil casing adopts this heat treatment method, it can effectively improve the impact toughness, tensile strength, and anti-destruction performance of the oil casing, ensuring a good value in use. Oil casing is a necessary pipe for drilling oil and natural gas, and it must have good performa

Common line pipes are mainly divided into welded steel pipes and seamless steel pipes. Welded steel pipes are line pipes connected by electric fusion and electric welding. Generally speaking, the length is longer, which can meet the large-scale use of users, but the stability is not as good as that

In the process of producing straight seam steel pipes, the temperature must be strictly controlled, to ensure the reliability of welding. If the temperature is too low, it may cause the welding position to fail to reach the temperature required for welding. When most of the metal structure is still

Thick-walled straight seam steel pipe is a steel pipe made by rolling the long steel strip of the specification into a round pipe through a high-frequency welding unit and welding the straight seam. The shape of the steel pipe can be round, square, or irregular, depending on the sizing and rolling a

Causes and solutions of missing plating caused by hot-dip galvanizing of seamless steel pipes:1. The surface of the plated parts is not clean⑴The surface of the plated parts contains paint, grease, and solder; it can be polished or scrubbed with related solvents.⑵ iron oxide; under pickling; continu