Frame line crackThe shape of small longitudinal crack on the surface of alloy pipe is less than mm The overall width is less than mm The depth is lower than .mm.sonnet, When the mesh reinforcement on both sides of the beam is different, the reinforcement on both sides extends into the beam, and the reinforcement anchorage length is required.Plan scheme : high carbon steel with carbon content exceeding .% and alloy pipe with chromium content not less than %Jakobsberg,After determining the reasonable pickling agent and polishing solution, it is very easy to carry out hot galvanizing for relevant alloy pipes. Use 'phosphating treatment' to degrease the pipes of electrolytic machine equipment, put them into the aqueous solution with zinc salt after pickling and passivation, connect the negative level of electrolytic machine equipment, If the current flows from the positive stage to the negative stage, a layer of zinc is deposited in the pipe.The wear resistance, fracture toughness, impact toughness and bending strength under different process conditions were compared, and then the heat treatment process of GCrMo was determined. Development and application of ZYS- bearing damping and antirust oil. Bearing is a new type of multial damping and antirust oil. It takes refined mineral oil as the base oil and is equipped with various additives such as antirust and antifriction. Through comparison test, matching test with lubricating grease and user test, it is proved that ZYS- bearing damping and antirust oil has outstanding damping effect and good antirust lubrication performance.At present, there is still a big gap in the production technology of C-section steel between China and foreign countries.

→ wide flange and large lateral stiffness. Strong bending resistance.The reinforcement mesh of the maintenance platform has the characteristics of extensive application, beautiful style, convenient installation and durability, Skirting plate (edge guard plate), checkered plate guard plate, installation of connectors and other accessories can be added around. The reinforcement mesh is suitable for the reinforcement mesh manufactured in the factory and welded with cold-rolled ribbed reinforcement or cold-rolled smooth round reinforcement. The welded reinforcement mesh for reinforced concrete is a good and efficient material for concrete distribution. Flat steel with different specifications can be used for edge wrapping, Or wrap edges with angle steel, channel steel square tube, etc; Handles and hinges can also be installed on the reinforcement mesh that needs to be moved or opened frequently.→ the two surfaces of the flange are parallel to each other, making it easy to connect, process and install.Quality risk,Plan scheme : for high carbon steel with carbon content of more than .% and high chromium alloy pipe with chromium content of no less than %, the interval is min.Alloy tube is widely used in our daily life which provides us with great assistance. Miscellaneous scab

Stages needing attention in the production and manufacture of alloy tubesWelcome to inquire,However, what we need to do now is to improve the production technology level of China&#;s production process of C-section steel, and step up the formulation of relevant industry standards and inspection standards. C-section steel manufacturers should keep close contact with truck manufacturers and communicate more. In this way, it is more conducive for C-section steel manufacturers to produce C-section steel products suitable for truck industry.Generally speaking, the precision of seamless pipe is relatively low, and it is prone to uneven wall thickness, low surface luminosity and high customization cost. At the same time, some pits or black spots are easy to appear on the inner and outer surfaces. In addition to these, the seamless pipe manufacturer needs to carry out off-line processing for its detection, and its strength is relatively high, the pressure is high, and its advantages can be reflected in the material of mechanical structure. Seamless pipe can be divided into hot extrusion, hot rolling and cold rolling stainless steel pipe according to its rolling method. In addition,sonnetHow many kilograms per meter of 150 welded pipe, different elements can also be used for classification. The inner and outer surfaces of seamless pipes shall be free from chaps, folds, cracks,sonnetWholesale of welded pipe, cracks, scabs, it is necessary to use machining. The removed seamless pipes shall not have negative deviation after the inner diameter is followed,sonnetWhich is a good welded pipe manufacturer, If other minor surface defects with negative deviation cannot be removed, and its depth shall not be greater than . mm.The crack mainly occurs at -mm from the edge of the alloy pipe. The shape is several parallel vertical cracks of different sizes. The regularity is that the thicker the specification and model of the alloy pipe is The wider the width, the more serious the disadvantages.sonnet, Frame line crackThe system is mainly composed of control box, finishing roller, pre leveling unit, finishing unit and straightening unit. Mixed pass system. According to the characteristics of rolling mills and products, in order to give full play to the advantages of their respective systems and overcome their disadvantages, mixed pass system is often adopted, that is the combination of more than two systems. For example, straight leg cross rolling pass system is adopted for finished hole and front hole of finished product and bent leg cross rolling system is adopted for other passes; or direct rolling system is adopted for rough rolling hole and straight rolling system is adopted for the last ~ finish rolling holes Leg oblique tie hole, etc.