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 established in 2013, strategically located at No. 620 Mingzhu Road, Longwan District, Wenzhou City, Zhejiang Province, China. By harnessing the exceptional regional advantages of Wenzhou, and relying on the efficient and robust supply chain of Qingshan Holdings Group, coupled with our strong forging techniques and advanced machining capabilities, we have meticulously crafted a comprehensive production system exclusively for Longan flange.
The company boasts an impressive array of over a hundred CNC lathes, capable of processing high-precision workpieces with diameters under 2000mm. Additionally, it features 10 machining lathes for handling heavy workpieces and large tubesheets with diameters exceeding 2000mm. We have equipped our premises with 16 state-of-the-art high-precision machining centers. This includes 6 three-axis machining centers, 3 four-axis machining centers, 3 five-axis machining centers, 3 grand-scale gantry machining centers, and one expansive 2-meter horizontal machining center. These facilities ensure that every customer product is meticulously crafted within the factory's confines, maintaining stringent quality control at every stage, thereby meeting our clients' highest precision standards. This powerful suite of equipment comprehensively supports all product development endeavors, facilitating the most convenient and efficient services for customers' innovative research and development needs.
Our company features an advanced online ERP system that seamlessly integrates with the workshop network, from the entry of raw materials to the exit of finished products. This system enables a paperless production environment, ensuring data accuracy for each product. Simultaneously, it facilitates stringent quality control at every production stage through digital processes, ensuring that the quality of each product segment meets rigorous standards.
The company is further distinguished by its independent laboratories, furnished with a variety of sophisticated testing equipment. This includes fully automatic direct reading spectrometers, handheld spectrometers, specialized alloy analyzers, and hydraulic universal material testing machines, alongside pendulum impact testing machines, all designed to guarantee the highest standards of quality and precision.




