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 founded in 2013, is strategically located at No. 620 Mingzhu Road, Longwan District, Wenzhou City, Zhejiang Province, China. By capitalizing on Wenzhou's superior regional advantages, and the convenient and efficient raw material supply from Qingshan Holdings Group, combined with our robust forging processes and machining capabilities, we have developed a comprehensive production system for Long'an flange that stands out in the industry.
Boasting a dynamic array of over a hundred CNC lathes, our company is adept at processing intricately high-precision workpieces with diameters under 2000mm. Additionally, we feature ten advanced machining lathes capable of handling heavy workpieces and large tubesheets exceeding 2000mm in diameter. Our operation is further enhanced by 16 high-precision machining centers, including six three-axis, three four-axis, three five-axis machining centers, three large gantry centers, and one 2-meter horizontal machining center. This setup ensures that all customer products are meticulously processed within our factory, guaranteeing quality control of every element and meeting the exacting high-precision standards demanded by our clientele. Our powerful equipment configuration is designed to comprehensively address all R&D needs, delivering unparalleled convenience and efficiency for innovative product development.
A state-of-the-art online ERP system fully integrates our workshop network, from raw material intake to finished product dispatch, achieving a seamless, paperless production environment and ensuring data precision for each product. This system enables stringent quality control at every stage of production, employing digital processes to meticulously manage each link, ensuring product quality consistently meets required standards at every turn.
Our company is equipped with independent laboratories and a variety of sophisticated testing equipment, including fully automatic direct reading spectrometers, handheld spectrometers, spectral alloy analyzers, hydraulic universal material testing machines, and pendulum impact testing machines, ensuring rigorous quality assurance and product integrity.




