Weifang Ze billion management company in strict accordance with the ISO9001 international quality management system of production, the product has passed a number of testing and certification authority of the professional sector, all in compliance with national standards GB5135.11-2006 "groove fittings" requirement. The company constantly improve the business in the national market network construction and service system concept of business integrity, solid and effective management, advanced sophisticated equipment and technology, good product quality, service quality, the enterprise's brand awareness and reputation overall. Groove Tube Category: including mechanical tee, Stone machinery, machinery Reducing Stone, 90o elbow, 45o elbow, 22.5o elbow, are tee, reducing tee, being cross, reducer Stone, concentric size head, eccentric head, single flange, short pipe flanges, blind film series. If necessary, please call us. Tel: 18105368777 http://www.wfyzgy.com