2026-Zhejiang Chenggong Flange Co., Ltd.

Zhejiang Chenggong Flange Co., Ltd. (Formerly Wenzhou Longwan Yongxing Shengdi Flange Factory) is an enterprise specialized in forged flanges with nearly 20‑year manufacturing experience. Located in Longwan, Wenzhou, Zhejiang, reputed as “China Valve City”, we enjoy well‑developed transportation and convenient logistics. Since its foundation, the company adheres to the business philosophy of “Innovation in concept, technology and management”, which keeps the enterprise dynamic and progressive. We also uphold the principle of “Professionalism, dedication and constant pursuit of excellence”. We provide customers with high‑quality products and win trust through premium service, so as to maximize value for both clients and ourselves. Through years of efforts, we have introduced advanced forging technology, fully‑automatic CNC machine tools and a complete set of testing equipment. Our main products include slip‑on flanges, neck flanges, butt‑weld flanges, ring‑joint flanges, socket‑weld flanges, lap‑joint flanges, threaded flanges, pressure‑vessel flanges, elbows, reducers and stub ends. Our production complies with GB, ASME, DIN, JIS standards, and we also accept custom‑made non‑standard flanges, making our products ideal accessories for various piping systems. During continuous growth, we have built a technical team with solid theoretical knowledge and rich practical experience, and accumulated mature management experience. We own an integrated team covering product design, development, production and sales. Following our motto “A bright future awaits with solid achievements”, Chenggong Flange sincerely welcomes new and existing customers. We are ready for sincere cooperation with you to create a brilliant future together.