steel tube

 A179 seamless steel pipe is widely used petroleum, chemical, light industry, machinery, instrument, include industrial pipeline and mechanical structure parts, etc. Main features of ASTM A179 cold drawn seamless pipe are the following: 1. ASTM A179 cold drawn seamless pipe manufacturers with thick dense zinc layer covered in the cold drawn seamless pipe surface, it can avoid cold drawn seamless tube matrix and any contact with the corrosion solution to protect the steel matrix from corrosion. 2. Pure zinc layer is the most hot dipped galvanized layer of galvanized layer, its nature is basically close to pure zinc, with ductility, so it is full of flexibility. 3. With iron-zinc alloy layer, combined with dense, and with the unique anti-corrosion in the marine atmosphere. 4. Since zinc has good ductility, its alloy layer and steel base attached to a solid, so hot-rolled parts can be cold, rolling, drawing, bending and other molding without damage to the coating. 5.The surface of col...

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 The surface treatment of seamless pipe is one of the key factors in determining the anti-corrosion life of the pipe. In the practical application of seamless pipe, the surface of seamless pipe is usually descaled in order to prolong its service life. The descaling of seamless pipe is divided into tool descaling and spray descaling. So what should be noted when spraying descaling of seamless pipe? 1) Wear-resistant materials In order to better achieve the actual effect of idealized seamless pipe rust removal treatment, the compound of single-sided epoxy resin adhesive, double or triple high-pressure polyZene architectural coating, gold steel sand and bearing steel ball wear-resistant materials should be selected based on the surface layer strength, original rust degree, specified roughness, plating type, etc. It is easier to achieve the actual effect of idealized rust removal treatment. Steel ball can strengthen the stainless steel plate surface layer, and gold steel sand can etchi...

 The green development of the iron and steel industry must rely on the renewal of environmental protection technologies, in accordance with the basic principles of circular economy, and on a clean production basis, with a focus on the efficient use of resources and energy conservation and emission reduction, and the full realization of low-cost, high-quality steel product manufacturing, energy efficient conversion And timely recycling, large-scale waste disposal - absorption and re-recycling 3 functions, can achieve ecological links with other industries and neighboring society, thus building a green development model. All this prerequisite is the innovation and development of environmental technology. When it comes to the future development and innovation of environmental protection technologies, the steel industry should focus on strengthening the following aspects: The flue gas desulfurization and denitrification technology needs to be further optimized and then fully promoted. ...

 In May, crude steel production in North America increased by 4.3% year-on-year to 10.107 million tons. It is worth noting that all countries in the region have seen an increase in crude steel production in May. The United States continues to be the largest crude steel producer in the region, with production soaring from 6.91 million tons in May 2017 to 7.107 million tons in May this year. Compared with the same period last year, Mexico's crude steel output increased by 3.4% to 1.8 million tons. Canada's total production was 1.145 million tons, compared with 1.01 million tons in the same period last year, an increase of 14.3%. According to data released by Cuba, its crude steel output increased by 17.6% in May; El Salvador's crude steel output increased by nearly one-third compared with the same period last year, and Guatemala's steel production increased by 7%. In the first five months, North America produced a total of 49.465 million tons of crude steel, compared with...

 1) Since iron oxide is contained in the slag, a part of the iron alloy is added to the iron oxide in the slag to burn, and if the amount of slag in the ladle is less, the burning loss of the iron alloy is less, that is, the alloy is saved. 2) Reduce the phosphorus return during the tapping process and the phosphorus return during the secondary refining. 3) Reduce the erosion of ladle bricks and improve the life of ladle. 4) Reduce the spillage of slag in the steel during the tapping process and during secondary refining to avoid accidents. 5) It is good for the quality of steel. http://www.tjxysteel.com/news/reduce-the-amount-of-slag-in-the-ladle-515.html

 Cold drawn seamless pipes refer to steel pipes with high dimensional accuracy and good surface finish used in mechanical structures and hydraulic equipment. Heat treatment is an essential process in its production process, this is why? The function of heat treatment of cold drawn seamless pipes is to improve the mechanical properties of steel pipes and precision steel pipes, eliminate residual stress and improve the machining performance of steel pipe metals. According to the different purposes of heat treatment, the heat treatment process of cold drawn seamless pipes can be divided into two categories: preliminary heat treatment and final heat treatment. The purpose of preparatory heat treatment is to improve the processability of the steel pipe, eliminate internal stress and prepare a good metallographic structure for the final heat treatment. The heat treatment process includes annealing, normalizing, aging, quenching and tempering, etc. The purpose of the final heat treatment ...

 Burrs are ubiquitous in the metalworking process. No matter how advanced and sophisticated equipment you use, it will be born with the product. It is mainly due to the plastic deformation of the material and an excess iron filings generated on the edge of the processed material, especially the material with good ductility or toughness, which is particularly prone to burrs. How to remove burrs from petroleum casing? Slide the oil casing pipe to the deburring process, and remove the external thread protection devices on both sides; blow out the iron slag in the oil casing pipe with compressed gas. Specific steps are as follows: Turn on the air source power switch of the air motor motor of the deburring equipment to check whether the length of the CNC tool is long enough and sharp; turn the tool bar to move the power switch axially, and shake the air motor motor power switch when the CNC tool extends into the tube body. Run at high speed, and then adjust the axial movement rate of th...