Warner Electromechanical | [Tianjin bolt tension meter] | bolt tension meter provided by Warner electromechanical. We are Tai'an City Warner Mechanical and Electrical Equipment Co., Ltd. (www.tahnjd.com) located at: Shandong Taian professional: roof dynamic instrument, mining intrinsically safe pressure detector, under reduced pressure hydraulic supports self-recording instrument, introduced by top anchor Rally doing bolt drawing a construction preparation before the test. material (1) pre-stressed strand rod material should be selected, high-strength steel or high-strength rebar. When the value is smaller or prestressed bolt length is less than 20m, the tendons may also be Class II or Class III reinforced. (2) cement paste material: cement should be ordinary portland cement, sulphate resisting cement can be used Tianjin bolt tension meter, if necessary, may not use high alumina cement. Fine aggregate should be used in sand particle size less than 2mm. Using water meets the requirements, the use of sewage shall not use acidic PH value of less than 4 water. (3) plastic casing material: should have sufficient strength to ensure it will not damage the bolt tension meter in Heze, processing and installation process, with water resistance and chemical stability in contact with cement mortar and preservatives no adverse reactions. (4) the spacer frame by steel, plastic or other material rod harmless, may not use wooden spacer frame. (5) anti-corrosion materials: in the anchor service life, should maintain its durability bolt tension meter, within the specified operating temperature or tensioning process does not crack or become brittle fluid, may not occur in the adjacent material adverse reactions should retain its chemical stability and water resistance, deformation anchor free section shall not create any restrictions. Warner Mechanical and Electrical Equipment Co., Ltd. Tai'an City produced according to the tension bolt tension meter detection range is divided into: 5 tons of bolt tension meter, 10 tons of bolt tension meter, 20 tons of bolt tension meter, 30 tons of bolt tension meter, according to the display different ways and accuracy are divided into two types of mechanical and digital explicit. In addition to the address of factors, primarily anchoring force bolting system deficiencies caused. After the roadway into the lane, in the original rock gravity and secondary stress (including mining and other support pressure caused by) the role of roadway deformation, if the rock is not self-stabilizing, and the lack of anchoring force bolting system. This deformation will not get effective control, will continue to develop, eventually leading to the caving and cave-rock. Inter-row spacing is too large anchor, bolting material inappropriate choice, matching bolting system is unreasonable, and poor quality of construction will have the consequences. Bolt Notes A, drill, drill rock joints should be perpendicular to the surface, and rock bolt axis of the main structure should slip plane surface or into larger angle. Should not be applied mechanically radial bolt, and should be adjusted depending on the situation. B, Chemistry kits when plugging into, make sure to plug tightly to avoid chemical slurry spill caused by the anchoring end segment anchor untrue. C, chemical anchor kits in time, we must maintain a solid anchor not shake, rotate to ensure anchoring quality. D, the upper plate, such as orifice uneven, smooth handling mortar should be used. E, before anchoring bolt in its self-important, should prevent the bolt slide wounding