Type |
Plate flange ,Lap Joint Flange ,Threaded flange, Socket Welding Flange, Blind Flange, Slip on Flange |
Technics |
Forged,Cast. |
Size |
1/2"-80"(DN15-DN2000) |
Pressure |
150 lbs - 2500lbs PN6-PN250 0.6MPa-32MPa 5K-30K |
Standard |
EN,DIN,UNI,BS,NF,ANSI,ASME,JIS,KS,API,MSS DIN:DIN2527,DIN2566,DIN2573,DIN2576,DIN2641,DIN2642,DIN2655,DIN2656,DIN2627,DIN2628,DIN2629,DIN 2631, ANSI:ANSI B16.5,ANSI B16.47,MSS SP44,ANSI B16.36,ANSI B16.48 BS4504, BS1560, BS10 UNI:2276 2277 2278 6084 6089 6090 2544 2282 6091-6093 JIS |
Material |
Stainless steel: ASTM A182 F1, F5, F9, F22, F91, 310/F304/304L/F316/F316L, F321, F347. |
Surface
treatment |
Galvanized(hot,cold),varnish Method rust oil Plastic spraying |
Application Fields |
Chemical Industry /Petroleum Industry /Power Industry/Metallurgical Industry Building Industry /Ship-building Industry |
Wenzhou Long'an Flange Co., Ltd., a beacon of excellence since its founding in 2013, proudly nestles at No. 620 Mingzhu Road, Longwan District, Wenzhou City, Zhejiang Province, China. Harnessing the unparalleled local advantages of Wenzhou, alongside the seamless and efficient raw material supply chain from Qingshan Holdings Group, we have crafted a robust and complete production system. Our impressive capabilities in strong forging processes and precision machining have established us as leaders in creating the comprehensive Longan flange production system.
Currently, the company boasts an impressive arsenal of over a hundred CNC lathes, masterfully capable of handling high-precision workpieces with diameters under 2000mm. In addition, we have 10 machining lathes tailored for processing substantial heavy workpieces and large tubesheets exceeding 2000mm in diameter. Our advanced facility is further enhanced by 16 high-precision machining centers, which include 6 three-axis machining centers, 3 four-axis machining centers, 3 five-axis machining centers, 3 large gantry machining centers, and 1 expansive 2-meter horizontal machining center. This formidable equipment lineup ensures that every customer's product is meticulously processed within our factory premises, allowing us to maintain stringent quality control at every stage. Ensuring our products meet the highest precision standards required by our esteemed clients, this powerful configuration supports comprehensive product research and development, delivering the most convenient and efficient services for your innovative projects.
Our company proudly operates a sophisticated online ERP system, seamlessly integrating with the workshop network to achieve a paperless production process, from raw material entry to finished product exit. This digital marvel guarantees accuracy in data management for every product, while enabling meticulous quality control at every production stage. By leveraging digital processes, we ensure each product link meets stringent quality standards, ensuring outcomes that consistently meet and exceed expectations.
Our state-of-the-art laboratories are independently operated and feature a suite of cutting-edge testing equipment. This includes fully automatic direct reading spectrometers, handheld spectrometers, spectral alloy analyzers, hydraulic universal material testing machines, and pendulum impact testing machines. Each piece of equipment is meticulously chosen to ensure precision and accuracy in testing, underscoring our unwavering commitment to delivering impeccable quality and performance in our products.




