Constant spring80 welded pipe more than one meterSignificantly improved technical level

Performance parameters and application scope of I-beamApplication characteristics of I-beam:Constant spring,Identification method of galvanized pipeI-beam is mainly used in building structure, curtain wall engineering, mechanical equipment and vehicle manufacturing.Shagamu,The alloy tube can be hardened by induction heating, so it has excellent rolling fatigue characteristics and corrosion resistance. Therefore, this kind of steel has been widely used as the material of rolling mill flap ball screw in rolling mill manufacturers. In addition to the excellent properties of cronidur steel, the modified LNs steel of case hardening steel also has the surface compressive stress characteristics obtained by heat treatment, and its application range is expected to be further expanded.Dry processing technology: after passivation treatment, parts shall be dried with air compression or hot gas, or drying treatment or air drying can be selected. Frame line crack

Stages needing attention in the production and manufacture of alloy tubesThe multi-al combination of reinforcement mesh welding machine and reinforcement mesh row welding machine based on PLC basic control. At present, the full-automatic mesh welding machine has the characteristics of simple operation high control precision and easy to master the process of high-speed continuous welding.a. In the forming process, the thick steel plate has uniform deformation,Constant spring15CrMo thick wall seamless pipe, small internal stress and no scratch on the surface. The alloy pipe produced and processed has higher coordination ability in the scope of size, specification and model of diameter and wall thickness, especially in the production and manufacturing of steel structure design grade thick wall pipe,Constant springHow much is the price of welded pipe per ton, especially medium diameter small thick wall pipe, which has incomparable advantages of other processing technologies, and can meet a large number of customer regulations on the specification and model of alloy pipe.plan, it has the advantages of low cost, high precision and small residual stress. It does not need expensive welding materials and weld detection and saves about % of the manufacturing cost of steel structure.Plan scheme : Martensitic chromium alloy pipe and chromium alloy pipe with Cr composition exceeding %, without high carbon steel and high chromium alloy pipe. The aqueous solution contains % sodium cyanide % ~ % (volume ratio), the solution temperature is ~ ℃, and the solution time is min.→ compared with the concrete structure, the I-steel structure can increase the service area by %, reduce the self weight of the structure by % - %, and reduce the structural design internal force.

Generally, there are many passivation methods for alloy tubes, the common ones are high temperature passivation or sodium cyanide passivation.Safety and health,Constant springHow much is a 32 welded pipe, The small length of repair welding is mm; The raw material shall not exceed mm after grinding by welding edge.Galvanized pipes are designed to maintain high enough corrosion resistance.The alloy tube can be hardened by induction heating, so it has excellent rolling fatigue characteristics and corrosion resistance. Therefore, this kind of steel has been widely used as the material of rolling mill flap ball screw in rolling mill manufacturers. In addition to the excellent properties of cronidur steel, the modified LNs steel of case hardening steel also has the surface compressive stress characteristics obtained by heat treatment, and its application range is expected to be further expanded.Constant spring,Last week, the billet in North China market showed a slight rebound trend. The billet quotation in Tangshan, with a strong wait-and-see atmosphere in the market. Affected by the almost stagnation of festival procurement Tangshan billet fell by yuan during the Dragon Boat Festival holiday. On the first day after the festival, although the phase snail is still running at a low level, due to the small billet resources in the market, the steel mills unexpectedly rose, and the billet market rebounded. However, due to the continuous increase of capital pressure and the downturn in the transaction of downstream finished materials, the steel plant has always maintained a cautious wait-and-see attitude to maintain stability. Remove defective pipes within the allowable length. The defects can be removed by grinding with sand wheel, but the remaining wall thickness must be within the allowable standard.