Double headed bolts are manufactured according to GB897-GB901 standards. The materials used are: Q235, 45#, 40Cr, 35CrMoA, Q345D, specifications are: M3mm-M100mm, length can be customized according to user needs.
High strength bolt, material 35#, 45#, 35CrMoA, 25Cr2MoV, 304, 316, 304L, 316L, 2H, 2HM, B7, B7M, B16, B8, 8, B8M, 8M, widely used in the field of electric power, chemical industry, oil refining, valves, railways, bridges, steel, automobile and motorcycle accessories
Double headed bolt action: generally used in mining machinery, bridges, automobiles, motorcycles, boilers, steel structures, cranes, large span steel structures and large buildings.
Methods: General stud stud said: M12 * 100 GB 901-88 (standard) 35#/35# (material) grade 8.8 /8 (modulation level) means: the diameter of =12mm length =100mm GB 901-88 is used in national standard (of course, also can according to need by industry standards)
Stud standard: GB 900-1988
Brief introduction of stud stud structure to save time and cost all studs without drilling, threading, punching, riveting, screw thread and finishing steps, expanding the potential application of structural design, large current and small penetration. Therefore, it can be welded to a very thin sheet. Stud welds must be welded from one side. Welding in all position, with the help of extender restricted on the vertical partition board. Because it is a short time welding and very little deformation after welding, it does not need to be trimmed. Because the welding structure does not need to drill holes, it will not cause leakage. The joint can reach a high strength, that is to say, the joint strength of stud welding is greater than that of stud itself.
How to install stud bolts is economical, and the advantage of other welding methods lies in the welding power. For mass-produced workpieces, standard studs are low cost. The equipment and welding gun have many kinds, and the purchase cost of equipment is relatively low. According to the product, it can be made into multi position automatic welding machine or high precision Longmen numerical control automatic welding machine. Stud welding has higher quality reproduction rate and smaller reject rate. However, the application of stud welding in the welding should pay attention to the other, a certain limit for structural steel stud on the carbon content of steel, according to the recommended stud material and base metal combination welding welding, or stud and parent material between each other will not melt. The stud material and parent material combinations recommended outside the scope shall be tested to determine the weldability and the design requirements of the anchor bolt products. Liuzhou Sheng screw Co., Ltd. for you to produce qualified products.
Hejian City, Hebei province Longsheng screw Co., Ltd.
September 22, 2016