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

1. 316 stainless steel is a type of molybdenum-containing stainless steel. Due to the molybdenum in the steel, the overall performance of this steel is better than that of 310 and 304 stainless steel. Under high-temperature conditions, when the concentration of sulfuric acid is lower than 15% and hi

During the forming process of the spiral steel pipe, the steel plate is uniformly deformed, the residual stress is small, and there is no scratch on the surface. The processed spiral steel pipe has greater flexibility in the range of diameter and wall thickness, especially when producing high-grade

In modern household water supply pipes, the corrosion resistance of water pipes is very important, because it means we can drink healthy and pollution-free drinking water. When PPR plastic pipes were promoted as tap water pipes, a test report from the Shanghai Disease Research Institute showed that

1. The premise must be polishedThe galvanized layer at the weld must be polished off, otherwise, bubbles, trachoma, false welding, etc. will occur. It will also make the weld brittle and reduce rigidity.2. The welding characteristics of galvanized steelGalvanized steel is generally coated with a lay