Hang Rongli Standard Fasteners Co. Ltd. Is a modern enterpise with registeered capital 15 million RMB yuan professionally engaged in manufacturing the high strength fasteeners such as high strength bolts with large hexagon head for steel structures, sets of torshear type high strength bolt hexagon nut and plain washer for joints of spacr grid structures, etc. The company is located at Xiaoshan Economic and Technolongical Development Zone, Hangzhou with convenient transportation.

The company can manufacture the high strength bolts for steeel structures as per ISO international standards, DIN German standards, ANSLAmerican standards, JIS Japanese standards, NF French standards and GB national standards. The mechanical strength of products can reach the grade of 8. 8S, 10. 9S, ASTM A325, ASTM A490, 8T, 10T. The products have passed the test of Testing Center for Standard Parts of Ministry of Railways of PRC, Testing Center for Standard Fasteners of China State Bureau of Technical Supervision, Testing Center of Zhejiang Architecture Institute, Shanghai Office of East China Fasteners Testing.