Riverstone Lanzhou Chemical Machinery Co., Ltd., was established in January 13, 2001 formally established, is a set of pipe fittings, flanges, standard parts, development, production and sales in one of the private enterprises. Our products are a total of more than 50 varieties, more than 180 series, thousands of specifications. Product use: ISO, API, ANSI, BS, DIN, NF, JIS, JPI, GB, JBI, GB, JB, and other advanced standard of domestic and foreign production. DN 1/8 "- 80" (DN4--2000mm), pressure level 150Lb - 2500Lb (0.1Mpa - 42.0Mpa), pipe fittings main materials are carbon steel, alloy steel, stainless steel, ultra-low carbon such as stainless steel and titanium smelting and manufacturing according to customer special requirements. My company has always been committed to relying on technological innovation, the application of new technologies, new processes, new materials development of high-quality new products over the years for petroleum, chemicals, fertilizer, metallurgy, electricity, plumbing and heating industry to introduce devices pipe fittings matching products have been widely praised by users and trust. In the company of "everything for the customer" service philosophy and dedication to provide customers with quality products, with the pre-sale, after-sales service.