[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] specify the contents of a ball joint bearing "Highway Bridge Engineering Quality Inspection and Evaluation Standards" civil engineering (JTG F80 / 1-2004) Appendix D concrete compressive strength assessment are as follows: Recently, the highway bridge design, construction specifications have carried out amended to include concrete with strength grade nominal, and this standard and GB "concrete strength inspection and assessment" (GBJ 107-87) consistent. Strength rating C is a side 150mm cube specimen, according to standard methods for making and testing, compressive strength 28d age range of 95% guaranteed rate of the past relationship between the concrete grade M and the C = M-2, which units of Mpa [slide] ball joint bearing industry problem: more steel, more steel structure is a strategic national policy of resource utilization sliding ball joint bearing, should be encouraged and strengthened development. But the company short-term benefits in return no way advanced the ball joint bearing slide technology! Difficult to get popularized. [Slide] ball hinge support the concept behind the long-term economic plan, inadequate product refinement, low value-added steel base of support is far from strong. [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] architecture ball joint bearing steel structure includes a frame structure, frame - support structure, tube structure, truss structure, the grid (shell) structure, cable-membrane structure, light steel structure, tower mast structure. The choice of structural system, should consider their different characteristics, such as light steel structure industrial plants, when there is a large suspension load, you can consider giving up the door frame structure and the use of network structure; in architectural design permits, support may be arranged in the frame to improve structural rigidity, generally achieve better than a simple rigid connecting node framework economy; large span of roof covering construction, optional suspension or cable-membrane structure system unidirectional sliding ball joint Supports 100% quality, its members mainly in tension; high-rise steel design, often using steel - concrete composite structures, to make up the steel structure itself defects and improve structural performance. [Slide] ball bearing hinge tension and compression bearing bridge structure design is often due to the impact of various factors such as the bridge site, the bridge span on possible to completely unbalanced, causing some tension and compression support at the problem occurs repeatedly, that both pressure another force (uplift). Based on past experience in the design, while the proportion of species across the bridge to control 0.52-0.62, when using the cross-side span across the neck of 0.5 or less, generally set the tension on the seat over the pier. Moreover bridges, some of the major venues of roof trusses between the support legs will appear the same situation. To overcome the uplift Seismic reliable way sliding ball joint bearing quality! Some structural balanced weights approach, but both under pressure to take a more set and can withstand the pull of Bearings to adapt. Therefore, in engineering appeared called pull pressure bearing structure forms (such as wide-Engineering Hengshui Rubber Co., tension and compression ball joint bearing) unidirectional sliding ball joint bearing 100% quality | sliding ball joint Supports | full range provided by the Hengshui-Engineering Rubber Co., Ltd.. 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!