Shijiazhuang direct professional connector sleeve to ensure quality

 Reinforced straight thread connecting steel for reinforced straight thread connectors take the following applications: either within the joint center to 35 times the length of the bar diameter section ranges, the reinforced cross-sectional area of ??the joint account by the total cross-sectional area of ??the reinforced percentage. At the same time should meet the following technical requirements: the percentage of the tension zone by reinforced joints should not exceed 50%. Joints should avoid a frame beam and column ends end stirrups encryption requirements for seismic zone; the joints should not exceed 50% of the percentage can not be avoided. (1) is connected to the screw thread steel construction regulations set by qualified testing steel straight thread sleeve, one end of the hole should cover protective cover, and a clear specification mark; at the same time to ensure straight thread connecting the sleeve can not have a grease, etc. Concrete quality of dirt. (2) construction preparation process, the steel should be straight and then cutting, cut end should be smooth, without horseshoe or deflection, it is appropriate cutting machine cutting can not cut off gas feed. Operation of the workers who participated in the joint construction of group leaders should participate in technical training procedures, operating workers should induction after assessment. (3) wire head machining. Textured yarn head tooth shape, pitch must be consistent pitch and tooth-shaped coupling sleeve, bare teeth threaded segment partially effective cumulative length less than the circumference of a button. With the corresponding ring and silk head pallets qualified. When rolling steel straight thread should be used lubricating water-soluble cutting fluid. Do not use oils without cutting lubricating fluid or lubricating fluid rolling wire head; the operator should check the wire head of quality. We have inspected the wire head should be protected. Steel wire head end should wear protective cap, screw on the other end connected sets, stacked neatly classified in accordance with the specifications set aside. When steel connection, steel specifications and straight thread connection sleeve size should be consistent and ensure threaded wire head and steel connecting sleeve clean, undamaged. At the same time using the embedded connector, straight thread connecting the sleeve position, size and quantity should meet the design requirements, with a straight bar threaded sleeve should be firmly connected to the outer end of the straight thread connecting the sleeve due closures. Two bars should be joined end face of the top tight, straight threaded sleeve in the middle position, the deviation is less than 1P (P is the pitch).