Die spring | Xufeng Hardware Factory (certified) | spring by Dongguan City, Xu-feng Hardware Products Factory. Dongguan City, Xu-feng Hardware Products Factory (www.dglijing168.com) is specialized in the "spring-like, lathe category, stamping class, spring, torsion spring, retainer, battery spring, shaped bomb" of the enterprise, the company receives "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Miss Liu. Dongguan City, Xu-feng Hardware Products Factory is a professional manufacturer of metal springs, lathe parts and stamping parts of the enterprise, the factory has advanced technology and equipment, modern workshops and professional personnel, products sold around the world. Tangxia Xufeng Hardware Products Factory production equipment: Japan has imported computer universal spring machine, computer spring machine, extension spring, torsion spring machines, CNC lathes, grinders, small presses and other machines more than 100 sets of precision. Computer controlled servo horizontal tensile testing machine with a whole rack welded steel frame construction, single rod double-acting piston-cylinder test force applied, cylindrical pin plug sample load force sensors, based on the length of the sample size may have a level adjust the tension of space, a computer screen controls and displays test force and test curves, test methods required automatic processing test data, the machine for lifting belts, chains and ropes class-by-class products do tensile test equipment for lifting by-products of tensile load with toys spring, sabotage and other tests, require flexible and easy to operate, load slow and steady, strong body carrying capacity and so on. The factory has passed ISO9001 quality management system certification, all products comply with ROHS and WEEL environmental standards, customers are welcome to inquire cooperation, I plant business philosophy: "honesty, quality and price benefits, efficiency, innovation and development; meet customers' demand is our eternal pursuit! "We will be happy to serve you! Dongguan City, Xu-feng Hardware Products Factory is a professional manufacturer of metal springs, lathe parts and stamping parts of the enterprise, the factory has advanced technology and equipment, modern workshops and professional personnel, products sold around the world. Spring washer under the nut is installed, its cooperation with the special wrench to tighten the nut to the required standards after torque locking nut can play the role. Currently battery spring, everywhere in the nervous speed up grid construction and transformation, porcelain and other components when installed, be sure to install the spring washers to ensure the quality of power grid construction and transformation, project quality will directly affect the safe operation of the line. Spring washer is not installed, if the hot summer spring, the line runs continuously at high temperatures, thermal expansion and contraction of the metal, bolt, nut heated, produces loose nut trends; encountered windy weather, the wind blowing on the wire pendulum shock No spring washers guarantee, over time compression spring, will accelerate the loose nut. Its consequences and harm can be imagined. Therefore, a large area power grid construction and transformation, not just to progress, the easy way, and ignore the small part