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., established in 2013, is strategically located at No. 620 Mingzhu Road, in the bustling Longwan District of Shenzhou City, Zhejiang Province, China. Capitalizing on the exceptional local advantages of Wenzhou and bolstered by the convenient and efficient raw material supply from Qingshan Holdings Group, we have meticulously developed a robust production system for Longan flange. Our strong forging processes and machining capabilities are the bedrock of our operations, enabling us to deliver superior products to our valued customers.
Our company currently boasts a fleet of over a hundred CNC lathes, adept at processing high-precision workpieces with diameters under 2000mm. In addition, we maintain 10 machining lathes for handling heavy workpieces and large tubesheets exceeding 2000mm in diameter. Complementing this, we have outfitted our facility with 16 high-precision machining centers, including 6 three-axis, 3 four-axis, 3 five-axis machining centers, along with 3 large gantry machining centers and a specialized 2-meter horizontal machining center. This advanced machinery ensures that every product is expertly crafted within our factory, allowing us to maintain strict quality control at every stage. Our powerful equipment configuration meets all customer demands for product research and development, providing unparalleled convenience and efficiency for their innovative pursuits.
Our company leverages a comprehensive online ERP system, seamlessly integrating the entire workshop network from raw material intake to finished product dispatch, achieving a paperless production process. This sophisticated system ensures precise data accuracy for each product. Simultaneously, it enforces stringent quality control at every production stage, with digital processes meticulously overseeing each step. This guarantees that product quality consistently meets exacting standards at every link in the production chain.
We are equipped with state-of-the-art independent laboratories, featuring a range of testing equipment to uphold our commitment to quality. This includes fully automatic direct reading spectrometers, handheld spectrometers, advanced spectral alloy analyzers, hydraulic universal material testing machines, and pendulum impact testing machines. These tools ensure rigorous testing and verification of our products, reflecting our dedication to superior quality assurance.




