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Measurement method of straightness of steel pipe
Generally speaking, there are two ways to calculate straightness or curvature: 1、 Local curvature of seamless steel pipe or straight seam steel pipe: measure the chord height (mm) at the maximum bending of the steel pipe with a ruler with a length of one meter, which is the value of local curv...Read more -
Characteristics and application of finishing pipe
Finish rolled pipe, also known as cold-rolled precision steel pipe, is a production process of seamless steel pipe. Characteristics of finish rolled pipe: 1. The tolerance dimension accuracy of cold rolled precision steel pipe is high, and the product accuracy is controlled within ± 0.05mm...Read more -
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