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., proudly established in 2013, is strategically located at No. 620 Mingzhu Road, Longwan District, Wenzhou City, Zhejiang Province, China. Our company takes full advantage of Wenzhou's exceptional local resources and the seamless raw material supply from Qingshan Holdings Group. Coupled with our robust forging processes and advanced machining capabilities, we have successfully developed a comprehensive production system dedicated to the excellence of Long'an flange.
Currently, our company is equipped with over a hundred CNC lathes capable of processing high-precision workpieces with diameters under 2000mm. Additionally, we boast 10 machining lathes for handling heavy-duty workpieces and large tubesheets with diameters exceeding 2000mm. Our state-of-the-art facility includes 16 high-precision machining centers, comprising 6 three-axis centers, 3 four-axis centers, 3 five-axis centers, 3 large gantry centers, and a 2-meter horizontal center. This comprehensive setup ensures that every customer product is meticulously processed within our premises, allowing us to maintain stringent quality control over each stage and guarantee that every product meets our customers' exacting high-precision standards. Our powerful equipment configuration is designed to thoroughly satisfy all product research and development needs, delivering the most convenient and efficient service for our clients' innovative pursuits.
Our company operates a sophisticated online ERP system that fully integrates the workshop network, from raw material entry to finished product exit. This system facilitates a paperless production environment, ensuring the accuracy of data throughout every production stage. Moreover, the system enables precise quality control for each production link, utilizing digital processes to oversee every aspect, thereby ensuring that product quality consistently meets required standards at every step.
Our company is proud to feature independent laboratories equipped with an array of testing equipment, including fully automatic direct reading spectrometers, handheld spectrometers, spectral alloy analyzers, hydraulic universal material testing machines, and pendulum impact testing machines. These resources ensure that we uphold the highest standards of quality and performance for our products.




