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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Wenzhou Long'an Flange Co., Ltd., a beacon of innovation founded in 2013, is strategically located at No. 620 Mingzhu Road, Longwan District, Shenzhou City, Zhejiang Province, China. Harnessing Wenzhou's exceptional local advantages and the convenient, efficient raw material supply from Qingshan Holdings Group, we have established a robust production system for Long'an flanges. Our strong expertise in forging processes and machining capabilities ensures top-notch quality and precision in every product we craft.
Our company proudly operates over a hundred CNC lathes, adept at processing high-precision workpieces with a diameter of up to 2000mm. Additionally, we boast 10 machining lathes for heavy workpieces and large tubesheets exceeding 2000mm. To further elevate our capabilities, we have equipped ourselves with 16 high-precision machining centers. Our arsenal includes 6 three-axis, 3 four-axis, 3 five-axis machining centers, 3 large gantry machining centers, and a 2-meter horizontal machining center. This cutting-edge equipment ensures that every customer's product is processed meticulously within our factory, maintaining impeccable quality at each stage and achieving high-precision standards. Our powerful setup caters comprehensively to all product research and development needs, delivering unparalleled convenience and efficiency for innovative product creation.
Our state-of-the-art online ERP system is a testament to our commitment to excellence, fully integrating the workshop network from raw material entry to finished product exit. This paperless production system ensures data accuracy for every product. It empowers us to maintain stringent quality control, leveraging digital processes to oversee each production phase and guarantee that every product meets our high-quality standards throughout its manufacturing journey.
Dedicated to maintaining the highest standards, the company operates independent laboratories equipped with an array of testing equipment. Our facilities feature fully automatic direct reading spectrometers, handheld spectrometers, spectral alloy analyzers, hydraulic universal material testing machines, and pendulum impact testing machines—ensuring comprehensive and precise analysis and quality assurance.




