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

Line pipe has the advantages of high-temperature resistance and reduced loss, and the pipe is generally very strong and durable. Because of such powerful advantages, line pipes are widely used in oil transportation, the transportation of various gases, and liquefied gas. In addition to being used in

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

The performance and function of the original color straight seam steel pipe in the specific use process, the fully demonstrated operational contribution, and the resulting use performance. After painting, the straight seam steel pipe is also very energetic and beautiful when it is sprayed with white

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

Hydrostatic test of oil casing is an essential link in the steel pipe manufacturing process and an important means to test the overall quality of oil steel pipes. In simple terms, it is a test in which the pipe is filled with water and tested under pressure to maintain the specified pressure without

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

In pipeline manufacturing, Steel flanges are mainly used for the link of pipelines. In the pipelines that need to link, Various devices include a flange. deficient-Pressure pipelines can use wire flanges and welding flanges with pressures greater than 4 kg. Add sealing points within the two flanges,

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

The seamless steel elbow has the following advantages: hygienic and non-toxic, light in weight, good heat resistance, good corrosion resistance, good heat preservation, good impact resistance and long service life1. Hygienic and non-toxic: the material is completely composed of carbon and hydrogen,