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

Austenitic stainless steel is softened by solid solution treatment. Generally, the stainless steel tube is heated to about 950-1150°C and kept for some time, so that carbides and various alloying elements are fully and evenly dissolved in austenite, and then quickly quenched and cooled. , carbon and

Thick-walled welded pipe is a hard-to-deform precipitation-strengthened nickel-based superalloy, which is similar in composition to the ЭИ929 alloy of the former Soviet Union, and has a high level of solid solution strengthening of alloying elements and precipitation strengthening of γ' phase. It ha

The importance of coated composite steel pipes for fire protection in industrial applications is becoming more and more obvious, but do you know the details about coated composite steel pipes? Let's take a look next.1. Hygienic, non-toxic, no fouling, no breeding of microorganisms, ensuring fluid qu

1. Select the appropriate connection method according to the caliber and the specific conditions of the pipelineA. Welding: According to the site progress, enter the installation at an appropriate time. Fix the bracket in advance, draw a sketch according to the actual size, and prefabricate the pipe