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, Longwan District, Wenzhou City, Zhejiang Province, China. Harnessing Wenzhou's exceptional local advantages and the efficient, reliable raw material supply from Qingshan Holdings Group, combined with our robust forging processes and machining capabilities, we have meticulously crafted a comprehensive production system dedicated to Long'an flanges.
Our company proudly operates over a hundred state-of-the-art CNC lathes, capable of crafting high-precision workpieces with diameters less than 2000mm. Additionally, we maintain 10 machining lathes for handling substantial workpieces and large tubesheets exceeding 2000mm in diameter. Our facility boasts 16 precision machining centers, including six three-axis, three four-axis, three five-axis, three large gantry, and a 2-meter horizontal machining center. This impressive suite of machinery ensures that every customer product is meticulously processed in-house, allowing us to maintain quality control over every detail and meet the high-precision demands of our clientele. Our formidable equipment lineup comprehensively fulfills all customer product research and development needs, providing unparalleled convenience and efficiency for their innovative endeavors.
Our advanced ERP system is fully integrated into the workshop network, covering everything from raw material intake to finished product dispatch, achieving seamless paperless production, and ensuring precise data accuracy for each product. This digital framework allows us to tightly control quality at every production stage, ensuring that each product meets stringent quality standards at every step.
We are proud to have independent laboratories equipped with a diverse range of testing equipment, including fully automated direct reading spectrometers, handheld spectrometers, spectral alloy analyzers, hydraulic universal material testing machines, and pendulum impact testing machines. These tools empower us to rigorously test and uphold our commitment to superior product quality.




