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 |
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Welcome to Wenzhou Long'an Flange Co., Ltd., a beacon of industry innovation established in 2013. Nestled at No. 620 Mingzhu Road, Longwan District, Wenzhou City, Zhejiang Province, China, we are strategically positioned to take full advantage of the region's unparalleled local benefits. By harnessing the seamless and efficient raw material supply chain of Qingshan Holdings Group, coupled with our robust forging processes and precision machining capabilities, we have crafted a comprehensive production system that defines Longan's excellence.
Our state-of-the-art facility houses over a hundred CNC lathes, adept at handling high-precision workpieces with diameters of up to 2000mm. For more substantial tasks, we boast 10 specialized machining lathes designed for heavy-duty workpieces and expansive tubesheets. Complementing this are 16 high-precision machining centers, featuring 6 three-axis, 3 four-axis, 3 five-axis, 3 large gantry, and a singular 2-meter horizontal machining center. This formidable arsenal ensures every customer's product is meticulously processed within our factory, with stringent quality control at every stage, guaranteeing our products meet the pinnacle of high-precision standards. Our extensive equipment array fulfills all facets of product research and development, delivering unparalleled convenience and efficiency for your innovative endeavors.
In our relentless pursuit of excellence, we've implemented a comprehensive online ERP system that seamlessly integrates with our workshop network. This system ensures a paperless production landscape, from the entry of raw materials to the dispatch of finished goods, maintaining impeccable data accuracy for each product. Through this digital transformation, we achieve rigorous quality control at every phase of production, assuring that every product meets stringent quality benchmarks at every stage.
Our commitment to quality is further exemplified by our independent laboratories, fully outfitted with a diverse array of testing equipment. This includes fully automatic direct reading spectrometers, handheld spectrometers, spectral alloy analyzers, hydraulic universal material testing machines, and pendulum impact testing machines. Each piece of equipment is dedicated to ensuring the utmost precision and reliability in our product offerings.




