Gu Chang annual production of ductile iron foundry covers features: 1) Earthquake: by setting the U-shaped groove in the mouth just Manhole, with the T-type synthetic rubber, embedded in a U-shaped groove in the Manhole covers The contact process in order to cushion and reduce vibration force. 2) Anti-ring: occlusal surface contact with Manhole covers, the direct effect on the T-type rubber, softness, eliminate noise. 3) Security: On covers the outer dimensions of cast iron covers Shanxi, Shanxi projecting a square groove cast iron covers, which covers the inner wall of the end of the split ring connected by a shaft fixed shaft and seat covers, the other end of the inner wall of the set pin fixation, and play a burglar role covers open when placed 90 degrees to remove the covers, to facilitate construction. Mortice locks nylon bushings, never rust, and is equipped with special tools to open, safe and reliable. Shanxi Taigu County Chang foundry is located in the hometown Inoue - Kim Gu treasure. Taigu Shanxi Jinzhong City, State Road 108, Hu village malleable Industrial Park, east of long high-speed, high-speed transportation Northern Qi Tongyu convenient and accessible. Gu Chang-year foundry ductile iron covers features: (1) decorative effect, optional color Shanxi cast iron manhole cover price, can be designed and strong. Products can be made into a variety of covers given different shapes and purposes. (2) resistance, high / low temperature Shanxi cast iron covers offer, insulation, good corrosion resistance. Products at low temperature -40 ℃, 250 ℃ high temperature in normal use, does not affect performance. Product is electrically insulating, corrosion resistance, never rust. (3) easy to open, no harsh noise. Product is not lockable covers, easy to harsh noise and no rebound phenomenon open when the car ran over. Ductile iron covers features! Welcome to buy! Shanxi cast iron covers custom _ Chang in foundry (certified) _ cast iron covers are provided by Taigu Shanxi Chang in foundry. Gu Chang-year foundry (www.sxcnzz.com) is Jinzhong, machining leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chang-year leadership in the foundry staff warmly welcome all inquiries negotiations to create Chang foundry in a better future.