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. was proudly founded in 2013, strategically nestled at No. 620 Mingzhu Road, Longwan District, Wenzhou City, Zhejiang Province, China. By capitalizing on Wenzhou's superior local advantages and the convenient, efficient supply of raw materials from Qingshan Holdings Group, coupled with our robust forging processes and machining capabilities, we have masterfully crafted a comprehensive production system for Long'an flange.
Our company proudly boasts a fleet of over a hundred CNC lathes, expertly engineered to process high-precision workpieces with diameters less than 2000mm. We also possess 10 machining lathes for diameters exceeding 2000mm, adeptly handling heavy workpieces and large tubesheets. Further strengthening our capabilities, we are furnished with 16 high-precision machining centers, including 6 three-axis, 3 four-axis, 3 five-axis, 3 large gantry machining centers, and a 2-meter horizontal machining center. This ensures that each product is meticulously processed within our facility, maintaining stringent quality control at every stage, and guaranteeing that our final products meet the highest accuracy standards demanded by our esteemed clients. Our formidable equipment configuration comprehensively fulfills all product research and development needs, offering the most convenient and efficient services for innovative product development.
Our company has seamlessly integrated a sophisticated online ERP system, fully encompassing the workshop network from raw material entry to finished product dispatch. This ensures a paperless production environment and guarantees data accuracy for each product. Simultaneously, this system facilitates stringent quality control at every stage of production, employing digital processes to meticulously manage each step, ensuring that product quality consistently meets the required standards at every phase.
Moreover, our company houses independent laboratories outfitted with a diverse 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.




