[Slide] ball hinge support the basic requirements for concrete cement, sand, stone, water, Mixed agent mixed material quality and specifications must comply with the relevant technical specifications, according to a predetermined ratio with construction. Support cushion stone not appear dew angle, hollow, cellular, Ma surface phenomenon and any cracks. [Slide ball bearing hinge] "Highway Bridge Engineering Quality Inspection and Evaluation Standards" specify the contents of civil engineering (JTG F80 / 1-2004) Appendix D concrete compressive strength assessment are as follows: Recently sliding ball joint bearing specialist trust preferred road bridge design, construction specifications have been revised, including concrete with strength grade nominally, with this standard and GB "concrete strength inspection and evaluation standards" (GBJ 107-87) consistent. Strength rating C is a side 150mm cube specimen, according to standard methods for making and testing, 28d age range of 95% guaranteed rate of the compressive strength of the sliding ball joint holder selling the country, the relationship with the past for concrete grade M C = M-2, the unit is a sliding ball joint bearing Mpa [] industry problem: more steel, more steel structure is a strategic national policy of resource use, development should be encouraged and strengthened. But the company did not return on short-term benefits, it is difficult to be widely used. [Slide] ball hinge support the concept behind the long-term planned economy, product refinement is not enough, the added value of a low sliding ball joint bearing timely delivery! MISS supporting steel structure on the basis of far less powerful. [Slide] ball bearing hinge largest construction market that is relatively backward, many stakeholders in the development of housing construction, design and use are in-depth, but rights, responsibilities and inadequate protection of private ownership. Finally, the rapid development of steel undertakings is conducive to the stable development of the national economy, we expect steel suppliers, steel companies and steel manufacturers together form industry alliances, and work together to enlarge and strengthen the steel industry, manufacturing strong, national will be powerful. [Slide] ball hinge support unidirectional activity coefficient of sliding friction bearing design: seismic plus non-grease lubricated, room temperature, type of bearing design friction coefficient minimum value of 0.03; cold-type bearing design minimum value of the coefficient of friction 0.06. The concept design of the steel structure stability [slide] ball joint bearing strength and stability of the difference intensity is defined as the maximum stress limit (or internal force) structure or a single member in a stable equilibrium state caused by the load exceeds building materials strength, so it is a stress problem. Because the value of the ultimate strength characteristics of the material varies, the steel is taking its yield point. The main is to find stability between the external load and the internal resistance of the structure unstable equilibrium state, that rapid growth began to deform and trying to avoid the need to enter the state, so it is a deformation. Such as axial compression column, when instability lateral deflection column makes the column add significant additional moment slide ball bearing hinge, so the column failure load can be much lower than its axial compressive strength, at this time, loss Stability is the main pillar of damage. In addition,] [slide ball bearing hinge edge port is provided by a rubber damping ring after loading seismic horizontal force of extrusion steel pots, seismic energy is released. In addition to having the energy dissipation damping effect, since the intermediate plate or pot holder plug into the lower portion of bearing steel bowl, it will not produce the phenomenon of an earthquake off the beam, after the earthquake of the bridge pier (Taiwan) is not the force It will have too much influence. The best-selling ball bearing slide hinge _ _ sliding ball joint bearing full range of manufacturers! By-Engineering Rubber Co., Ltd. Hengshui. Hengshui-Engineering Rubber Co., Ltd. (www.grgcxj.cn) (www.grgcxj.cn) strong, credible, Hengshui in Hebei site construction materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Guangrun Rubber Company into the brilliant and you work for a better future!