Lanzhou China Sea Machinery Co., Ltd. was established in 2007, is specialized in the production and sales of metal bellows expansion joints, metal hose, soft rubber joints, rubber shock absorbers, steel flexible waterproof casing, steel limit expansion joints, loose Transmission Joint enterprises. With advanced production equipment, technology and complete testing equipment, passed the international quality management system certification. Develop and advance the China Sea Company, in accordance with the advanced enterprise management, strict quality consciousness, innovative R & D team, modern marketing concept, has many in Beijing, Shijiazhuang, Shenyang, Zhengzhou, Xi'an, Baotou, Yinchuan, Xining and other conduct sales network, in time for customers to provide high-quality professional services. Our company has long been in strict accordance with national standards GB / T12777-99 production of metal bellows expansion joints. GB / T26121-2010 soft rubber joints. GB / T12465-2002 steel expansion joints. Our products are widely used in iron and steel, petroleum, metallurgy, chemical industry, water utilities, heating, gas, fire and other industries. Pledge: 1. equipped with product manuals, installation instructions, product certification, inspection reports. 2. Since the date of the sale of the product within 15 days, with sales of inventory replacement or return. 3. If the product quality problems, the company sent forward to replace or repair the installation commissioned by the user, the cost borne by the company. The products in the installation, pressure test, the operational phase, if not properly communicate to the company's technical staff, such as the problem can not be solved effectively, the company sent technical personnel to the scene to guide the installation.