Tianjin Zhongchengxin High-Strength Fastener Co., Ltd. is located at Tianjin with great convenience and advantages for exporting. We specialized in the production of high-strength bolt nearly ten years. Our company is ISO9001-2000 certified. Being the most competitive bolts manufacturer in China with an annual production capacity of 10 millions sets approximately&＃12290;Our main product is high strength bolt with nut and washers. The products are produced in conformity with DIN, ANSI, AS, BS, JIS, GB, ISO or nonstandard specifications or against customers&＃039; requirements. Including GB1228-1231, GB3632, ASTM A325, ASTM A490, ASTM A325M, ASTM A490M, ASTM F1852, DIN 6914, in grades 8.8, 10.9, 12.9. Our high strength bolt with nut and washers are mainly used for structural connections, such as the construction of steelworks, railway, bridge, power plant, boiler station and etc. I can make sure that we can offer you a really competitive price, because we are professional. If you are interested in our product, please feel free to contact me.