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 visionary force in the industry, was established in 2013 and strategically located at No. 620 Mingzhu Road, Longwan District, Shenzhou City, Zhejiang Province, China. By harnessing the remarkable local advantages of Wenzhou, coupled with the convenient and efficient raw material supply from the esteemed Qingshan Holdings Group, and our robust forging processes and machining capabilities, we have developed a comprehensive production system. This ensures that every Long'an flange embodies the pinnacle of precise craftsmanship and quality.
Our company proudly operates over a hundred state-of-the-art CNC lathes, capable of processing high-precision workpieces up to a diameter of 2000mm. In addition, we house 10 specialized lathes for handling heavy workpieces and large tubesheets exceeding 2000mm in diameter. With 16 high-precision machining centers at our disposal, including 6 three-axis, 3 four-axis, 3 five-axis, 3 large gantry, and a singular 2-meter horizontal machining center, we ensure that every customer product is expertly processed in-house. This rigorous control guarantees that each product fulfills the highest precision standards set by our discerning clientele. Our formidable equipment configuration comprehensively meets all research and development demands, offering unparalleled convenience and efficiency for your innovative projects.
Our company boasts a cutting-edge online ERP system that thoroughly integrates the workshop network, from raw material intake to finished product dispatch. This digital revolution facilitates paperless production, assuring data accuracy at every stage. Through this advanced system, we achieve meticulous quality control for every production link. By utilizing digital processes, we ensure that each stage of production meets our stringent quality requirements, consistently delivering products that exceed expectations.
In our pursuit of excellence, we have established independent laboratories equipped with an array of sophisticated testing equipment. This includes fully automated direct reading spectrometers, handheld spectrometers, spectral alloy analyzers, hydraulic universal material testing machines, and pendulum impact testing machines. These advanced tools reflect our unwavering commitment to precision, ensuring that every product adheres to the highest standards of quality and reliability.






