Industrial News
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There are spiral steel annealing process in use, mainly in the following three ways
1, To stress annealing Stress relief annealing, also known as low-temperature annealing (or tempering), which is mainly used to eliminate annealing casting, forging, welding, hot-rolled, cold-drawn pieces residual stress and the like. If not eliminate these stresses will cause the steel after a c...Read more -
Surface Treatment of Precision Steel Pipe
Surface treatment of precision steel pipe is by changing the precision steel surface tissue heat treatment to alter one surface properties. Surface hardening eleven surface structure change, without changing the chemical composition of the surface heat treatment. It can be used high-frequency, in...Read more -
Defects of Welded Steel Pipe
Welded steel pipe production process is a steel sheet, strip, and other various molding methods using the straight press roll or helical direction curling into a desired cross-sectional shape, and then by means of heat, pressure, different methods of welding weld together to obtain steel. Therefo...Read more -
Storage Conditions of Seamless Steel Pipe
1) Steel storage site or warehouse, should be selected in the clean, smooth drainage area, away from harmful gases or dust factories and mines. Presence on the ground to clear all the weeds and debris, keeping a clean steel; 2) In a warehouse not with acid, alkali, salt, cement, steel and other a...Read more -
Puncher of Seamless Steel Pipe
Production of hot-rolled seamless tube perforation is the most important step of deformation, its mission is to wear a solid tube rolled into a hollow tube. According to the structure and deformation characteristics piercing process of piercing machine can be divided into conventional perforating...Read more -
Features and benefits of seamless steel pipe
Features and benefits of seamless steel pipe 1. High precision machining saves wear and tear when the user quantity. 2. Specifications, wide range of applications. 3. Cold rolled finished high accuracy, good surface quality, good straightness. 4. The inner diameter of the pipe can be made hexagon...Read more
