Lei Wang Anping Wire Mesh Products Co., Ltd. (http://www.apleiwang.com/) had been "Business League certification", please rest assured purchase through the entire network, click on the page check "Business League certification Icons" I Certification Information . You can also click on the "Business League Service Icons" on this page directly contact our customer service! Steel mesh tunnel lining applications in accordance with national standards, "highway tunnel design specifications" JTGD70-2004 requirements. Shotcrete should be located in the ribbed steel mesh steel mesh, shotcrete help improve shear and flexural strength steel mesh quality standards, improve the anti-punching ability of concrete, bending resistance, improve the integrity of reinforced shotcrete mesh manufacturer, shotcrete reduce shrinkage cracks, prevent local swap block. Arranged in a rectangular grid should mesh reinforcement, reinforcement steel mesh spacing of 150 ~ 300mm. Can be 150mm × 150mm, 200mm × 200mm, 200mm × 250mm, 250mm × 300mm, 300mm × 300mm in combination. Lap length steel mesh of not less than 30d (d is the bar diameter). The thickness of the protective layer of sprayed concrete reinforcing mesh shall not be less than 20mm, when using double steel mesh, steel mesh spacing distance between the two should not be less than 60mm. Welded steel is the use of HRB400, after CRB550 other steel by using specialized equipment to straighten the vertical and horizontal reinforcement were arranged in a certain distance, all intersection points are used together to form a resistance spot welding steel mesh. Steel welding procedures are now computer controlled to ensure the welding quality and stability of reinforcement spacing, without loss of original strength and cross-sectional area of ??reinforced steel mesh specifications, but also has a variety of advantages: one, to protect the quality, stiffness , flexibility, high weld strength; 2, improving earthquake resistance, crack resistance, can reduce the cracks; 3, to speed up the construction progress, improve efficiency, saving hours of work; 4, save steel consumption, alternative I can save the steel grade steel 30 % -40%; 5, lower costs, reduce project cost; 6, versatile, used in floor, walls, bridges, mines, roads, tunnels, burrow, subways, airports. Since the 20th century, welded steel construction industry has been widely used as a reinforcement material in concrete structures