Reinforced connecting sleeve specification standard reinforced connecting sleeve is positive silk thread connection sleeve, which is threaded through for at least one end can rotate steel case. Is generally used in the base plate. Or intermediate section floor pillar reinforcement, Full threaded threaded sleeve is currently the most widely used of the sleeve. There are positive and negative wire reinforced connecting sleeve is reinforced both in the case of two non-rotatable applicable. Standard reinforced connecting sleeve is generally connected to the rebar diameter φ16mm-φ40mm, according to market demand we have developed a connecting sleeve can be connected to 14mm and 50mm rebar. Standard reinforced connecting sleeve can be used to compose the lock female-type connector, the situation is completely unable to rotate steel, such as bending steel and bridges, piles and other steel cage butted against one another. The lock nut and connecting sleeve is screwed into the extended pre-threaded silk head side, and then put the other side of the reinforcement cage or the bending rebar, then tighten the standard sleeve, the sleeve is moved so that the other screw steel ends thread, finally locking connection sleeve with lock nut. Reducing reinforced connecting sleeve used mostly to connect different diameter rebar. The amount, though small, it is indispensable. Reducing reinforced connecting sleeve generally boast adjustable requirements within two number, for example: 25 # 28 # steel can adjustable steel connection, you can connect 32 # steel, but can not connect 36 # steel adjustable. Steel adjustable connection, there is no national standards, the above is the rule. Adjustable steel connecting sleeve outer diameter, length and material is calculated according to the bulk. Construction is noted that when different diameter steel connection, tightening torque value by the corresponding value smaller diameter steel access. Reducing straight thread connection is generally used in beams, columns, should be small diameter yield strength test. Pros and cons of silk sleeve for use in bars can not rotate the position can be set using the left and right hand threads to connect to connect. It requires the processing of steel wire head and connect one end of the sleeve and the corresponding side of a left-hand thread, connecting the left and right hand threads connecting sleeve respectively against the corresponding left and right hand threads wire head, the rotation of the sleeve, the sleeve is connected to both sides of steel closer to the center, precession to head, in order to achieve quick and easy connection. 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).