| Customization: | Available |
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| Media: | Water |
| Material: | Stainless Steel |
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| NO | Parts Name | Material | NO | Parts Name | Material | |
| 1 | Nut | 304 | 11 | Thrust Gasket | PTFE | |
| 2 | Handle | 201 | 12 | Stem | 304/316 | |
| 3 | Washer | 304 | 13 | Bonnet | WCB/CF8/CF8M | |
| 4 | Anti loosing Bonnet | 304 | 14 | Nut | 304 | |
| 5 | Nut | 304 | 15 | Stud bolt | 304 | |
| 6 | Hex Screws | 304 | 16 | Gasket | PTFE | |
| 7 | Disc spring | 304 | 17 | Body | WCB/CF8/CF8M | |
| 8 | Gland | 304 | 18 | Ball | 304/316 | |
| 9 | Packing | PTFE | 19 | Seat | PTFE | |
| 10 | O-Ring |
| Size | d | d4 | K | D | N-Z | C | T | L | ISO5211 | S | H | E1 | |
| 1/2" | DN15 | 34 | 60.3 | 90 | 4-16 | 2 | 9 | 108 | F03 | F04 | 9 | 75 | 125 |
| 3/4" | DN20 | 42 | 69.9 | 100 | 4-16 | 2 | 9.3 | 117 | F03 | F04 | 9 | 80 | 125 |
| 1" | DN25 | 50 | 79.4 | 110 | 4-16 | 2 | 9.8 | 127 | F04 | F05 | 11 | 90 | 155 |
| 11/4" | DN32 | 62 | 88.9 | 115 | 4-16 | 2 | 11.5 | 140 | F04 | F05 | 11 | 100 | 155 |
| 11/2" | DN40 | 72 | 98.4 | 125 | 4-16 | 2 | 13 | 165 | F05 | F07 | 14 | 120 | 185 |
| 2" | DN50 | 91 | 120.7 | 150 | 4-19 | 2 | 14.5 | 178 | F05 | F07 | 14 | 130 | 185 |
| 21/2" | DN65 | 103 | 139.7 | 178 | 4-19 | 2 | 16 | 190 | F07 | F10 | 17 | 150 | 260 |
| 3" | DN80 | 125 | 152.4 | 188 | 4-19 | 2 | 17.8 | 203 | F07 | F10 | 17 | 160 | 260 |
| 4" | DN100 | 155 | 190.5 | 228 | 8-19 | 2 | 22.3 | 229 | F07 | F10 | 19 | 185 | 300 |
| 5" | DN125 | 186 | 215.9 | 255 | 8-22 | 2 | 22.3 | 356 | F10 | F12 | 27 | 242 | 500 |
| 6" | DN150 | 215 | 241.3 | 280 | 8-22 | 2 | 23.9 | 394 | F10 | F12 | 27 | 270 | 600 |
| Main Techinical Parameter | WELFLOW | ||||||||||||
| Nominal pressure | 10K | ||||||||||||
| Test pressure |
Shell | 3.0 | Mpa | ASSEMBLY DRAWING | |||||||||
| High-Pressure Closure | 2.2 | ||||||||||||
| Low-Pressure Closure | 0.4-0.7 | 2PC ball valve | |||||||||||
| Applicable temperature | -29~180° | ||||||||||||
| Applicable medium: water, oil, gas | |||||||||||||
Wenzhou Long'an Flange Co., Ltd., a luminary in the realm of engineering excellence and innovation, has been dedicated to the art of crafting superior components since its establishment in 2013. Our headquarters are strategically located at No. 620 Mingzhu Road, Longwan District, Wenzhou City, Zhejiang Province, China-a region renowned for its industrial prowess and advantageous resources. By leveraging Wenzhou's exceptional regional strengths and the seamless supply of premium raw materials from Qingshan Holdings Group, we have meticulously developed a robust production system for Longan flange. Our unparalleled forging techniques and cutting-edge machining prowess distinguish us in the industry, enabling us to manufacture flanges of international acclaim.
Boasting an impressive fleet of over a hundred cutting-edge CNC lathes, Wenzhou Long'an Flange Co,Ltd. is adept at producing highly precise components with diameters extending up to 2000mm, ensuring exceptional detail and accuracy. Our capacity to handle substantial workpieces and expansive tubesheets is further augmented by our collection of 10 high-capacity machining lathes, accommodating diameters beyond 2000mm. Our tenacious pursuit of precision excellence has led us to equip our facilities with an array of 16 high-precision machining centers, including 6 three-axis, 3 four-axis, and 3 five-axis centers, alongside 3 large gantry machining centers and a formidable 2-meter horizontal machining center. This extensive and sophisticated suite of equipment assures that every product entrusted to us undergoes impeccable refinement within our facilities, empowering us to maintain stringent quality assurance at every stage and meet the demanding precision requirements of our clientele. This formidable array of equipment fulfills all product research and development aspirations, delivering unparalleled convenience and efficiency for pioneering product creation.
Our enterprise proudly embraces cutting-edge digital advancements with our state-of-the-art online ERP system, which seamlessly integrates across our production network, from raw material introduction to the dispatch of finished products. This innovative system revolutionizes our production methodology by achieving paperless efficiency and ensuring precise data capture for every item we manufacture. Moreover, this sophisticated system enables meticulous quality assurance at every phase of production, utilizing digital processes to oversee each step, ensuring that product quality consistently aligns with our rigorous standards.
Passion and dedication, enterprising, integrity and win-win, perseverance and persistence.
China Longan stainless steel flanges and pipe fittings Co.,Ltd (we are a factory, 100+ workers, 500+ customers, 10+ years of experience):1.Every process stems from dedication,producing good products,and stict control over details. Inteligent manufacturing,Longan has been upgrading.
1.How many countries you already expeorted?
--We exported stainless steel pipes to more than 30 countries mainly from Egypt,Turkey,India,Iran,Dubai,Thailand,Philippine
2.What is our product range?
--Based on our stainless steel seamless pipe factory, We supply the ONE-STOP service fittings,flanges, valves etc.
3.what is your delivery time?
--It depends on the demanded quantities and your location, nearly in 15-50days.
4. Can you provide OEM service?
--Yes. Welcom to contact us for more details discuss.
5. Can we visit your factory?
--Warmly welcome. Once we have your schedule, we will arrange the professional sales team to follow up your case.
6.How Does Flange Connection Work?
--A flange connection is an assembly involving two pieces of equipment, pipes or pipe fittings, two flanges, flange mats, and bolts. Different types of washers are also used with the flange connection to secure the connection.
Besides, a flange connection culminates in joining two materials using inner and outer lip parts or flanges. For each of the opposing flange faces to form a seal, force (gasket compression or sealing pressure) must be exerted and maintained. To ensure flanges stay in place, they are often bolted with a gasket between the flange faces to form a tight seal. One of the gaskets often used for this sealing is a disk spring, which is a type of spring
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