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Difference between cold rolled precision steel pipe and cold drawn seamless steel pipe
Cold rolled precision steel pipe is a kind of high-precision steel pipe material after cold drawing or hot rolling. Because there is no oxide layer on the surface and inner wall of cold-rolled precision steel pipe, no leakage under high pressure, high precision, high brightness, cold bending fixe...Read more -
Application of medium and low pressure boiler tubes
Medium and low pressure steam boiler tubes are made of steel ingots or solid tube blanks through perforation, and then made by hot rolling, cold rolling or cold drawing. Seamless steel pipe has a tight position in China’s steel pipe industry. According to incomplete statistics, there are ab...Read more -
Application of medium and low pressure steam boiler pipe
Medium and low pressure steam boiler pipe is made of steel ingot or solid pipe blank through perforation, and then made by hot rolling, cold rolling or cold drawing. Seamless steel pipe has a tight position in China’s steel pipe industry. According to incomplete statistics, there are about ...Read more -
Characteristics of cold drawn finish rolled pipe
Cold drawn finish rolled pipe, also known as cold rolled tight steel pipe, is a manufacturing process of finish drawn pipe. Features of finish rolled pipe: 1. The size accuracy of cold drawn finish rolled pipe is high, the product accuracy is controlled at ± 5mm, the surface and inner wall brig...Read more -
Classification of alloy steel pipes
High pressure alloy pipe is a kind of seamless steel pipe manufactured in a special way. Due to the use of special forging techniques, it can be 100% recycled. Due to different materials and uses, it is divided into different types. Here are several different classifications of alloy steel pipes....Read more -
What is hot rolled seamless pipe？
Manufacturing process of thick wall steel pipe and seamless steel pipe: Hot rolled (extruded seamless steel tube) round tube blank → heating → perforation → three roll cross rolling, continuous rolling or extrusion → pipe stripping → sizing (or reducing) cooling → straightening → hydrostat...Read more -
Straightness of steel pipe
Hot rolled seamless pipe, straight seam welded pipe, cold drawn seamless pipe, precision steel pipe, alloy pipe and other steel pipes have different degrees of curve shape in the longitudinal direction (i.e. length direction) in the production process. The curve degree of some steel pipes can be ...Read more -
Classification of welded pipe
According to different welding methods, it can be divided into arc welding, high-frequency or low-frequency resistance welded pipe, gas welded pipe, furnace welded pipe, Bondi pipe, etc. Welded steel pipe: used in oil drilling and production and machinery manufacturing. Furnace welded pipe: it ca...Read more -
Annealing process of seamless pipe
After the final heat treatment, the microstructure of 12Cr1MoVG alloy seamless tube blank has changed into Tempered Microstructure with martensite orientation, and has good strength and plastic toughness. In some areas, there are some “invisible” grain boundaries around the adjacent t...Read more -
Corrosion resistance analysis of alloy steel pipe
The chemical production with salt as raw material will produce strongly corrosive hydrochloric acid along with its process. Therefore, corresponding measures should be taken in the design of chemical equipment and pipelines. Shenyang Liaozhong chemical plant uses sandviksaf2205 steel for relevant...Read more -
Automatic ultrasonic flaw detection process flow and program control scheme of submerged arc straight seam welded steel pipe
The main procedures of LSAW longitudinal welded steel pipe automatic ultrasonic testing process flow include: system startup, welded pipe feeding, welded pipe transmission, welded pipe rotation, welded pipe clamping and positioning, weld flaw detection, spray marking, welded pipe clamp loosening...Read more -
Production technology of hot rolled seamless steel pipe
Seamless steel pipe plays an important role in urban infrastructure and the production, processing and manufacturing of mechanical products. Therefore, driven by the market, its production and processing technology has developed rapidly. The production process of hot rolled seamless steel pipe is...Read more