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 |
Founded in 2013, Wenzhou Long'an Flange Co., Ltd. has its headquarters nestled in the vibrant locale of No. 620 Mingzhu Road, Longwan District, Shenzhou City, Zhejiang Province, China. By capitalizing on Wenzhou's exceptional geographical advantages and the seamless supply chain facilitated by the renowned Qingshan Holdings Group, we have meticulously developed a robust production system for Long'an flange. Our expertise shines through a powerful combination of advanced forging processes and sophisticated machining capabilities, delivering excellence in every flange we manufacture.
Our company boasts an impressive array of over a hundred state-of-the-art CNC lathes, masterfully designed for precision machining of workpieces with diameters less than 2000mm. Furthermore, we are equipped with 10 machining lathes capable of handling heavy-duty workpieces and large tubesheets over 2000mm. To ensure top-tier product quality and innovation, we have integrated 16 high-precision machining centers, including six three-axis centers, three four-axis centers, three five-axis centers, three expansive gantry centers, and a two-meter horizontal center. This cutting-edge setup guarantees unparalleled quality control and precision, aligning with customer demands and facilitating innovative research and development with unmatched efficiency.
We've implemented a comprehensive online ERP system that thoroughly encapsulates our workshop network, from the initial entry of raw materials to the final dispatch of finished products. This digital transformation fosters a paperless production environment, ensuring precise data accuracy for each product. The system enforces meticulous quality control in every stage of production, leveraging digital processes to verify that every aspect of our products meets stringent quality standards.
Our company takes pride in its independent laboratories, outfitted 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, each playing a crucial role in maintaining the highest quality standards.




