About Us
Zhejiang Daye Flange Co., Ltd. was founded in 1998. After decades of dedicated development, we have evolved from a small workshop into a modern intelligent manufacturing base for flanges and pipe fittings.
Adhering to the founding philosophy of "Quality First" and the core principle of integrity-based operation all along, the company boasts standardized advanced management systems, an experienced professional technical team and a full set of high-precision production and processing equipment. We have consistently won high recognition and an outstanding industry reputation from customers at home and abroad, emerging as a widely trusted premium supplier in the flange and pipe fitting sector.
Annual Output
years experience
Production Equipment
Professional Team
Zhejiang Daye Flange Co., Ltd. is a high-tech enterprise integrating the R&D, production and sales of flanges and pipe fittings.
Located in Wenzhou, Zhejiang Province, our factory covers an area of approximately over 33,000 ㎡. We currently employ more than 200 staff and own over 200 sets of various CNC processing equipment.
Equipped with supporting professional precision machining workshops, forging workshops and raw material storage yards, the company has built an integrated full-process production system covering raw materials to finished products. We are capable of stable supply of various standard and non-standard stainless steel flanges and pipe fittings.
Our Product
Flanges
PL, SO, WN, BL, SW, TH, lap joint flanges, tube sheets, baffle plates, LWN flanges, figure 8 blinds, single blinds, single spacer rings & custom non-standard products
Pipe Fittings
Reducers, elbows, tees, crosses, caps, stub ends, branch outlets, etc.
Our products are widely used in the following industries
Main Application Scenarios：
- Petrochemical industry
- Oil & gas exploitation and storage & transportation
- Thermal power
- Nuclear power
- New energy
- Water treatment
Fire protection & gas supply, Food & pharmaceutical industry, Marine & offshore engineering, Environmental water treatment, Metallurgy & mining, Heating & ventilation, Mechanical equipment supporting, Liquid cooling and other engineering fields.
Fit for high-temperature, high-pressure, acid-alkali and salt spray corrosive environments. Serving as detachable sealing joints for pipes, valves, pumps, pressure vessels, heat exchangers and reactors, they are easy to install and maintain with reliable leak-free sealing.
Our Certificate
PED
PED
ISO9001
ISO14001
ISO45001
TS
Production Equipment
We have invested heavily in advanced manufacturing hardware, with a grand total of 219 sets of production equipment deployed across our workshops.
Our well‑established production system features 2 automated high‑precision machining lines dedicated to high‑accuracy component processing, 7 industrial‑grade forging lines for hot forming of metal workpieces, and over 100 premium CNC machines to carry out multi‑axis cutting, turning and finishing operations.
This comprehensive equipment configuration greatly optimizes our overall production efficiency, shortens manufacturing cycles and enables us to fulfil bulk orders while meeting stringent quality requirements for flange and pipe‑fitting supplies.
Forging workshop：
Precision machining workshop：
Automated machining workshop:
Production Market
Based in the stainless steel industrial base of Longwan, Wenzhou, our company has specialized in the manufacturing of flanges and pipe fittings for decades. Our sales network covers more than 30 provinces and municipalities nationwide, serving thousands of enterprises and equipment manufacturers across petrochemical, power, food & pharmaceutical, papermaking and other industries.
We keep expanding overseas markets, with products exported to Europe, Southeast Asia, Central Asia, Latin America, Russia and many other regions.
Supported by reliable quality and thoughtful service, we have won unanimous recognition from purchasers at home and abroad.
Our Service
01
Pre-sales Service
CAD drawing review & custom special flange design;
samples available for testing
02
In-sales Service
Separate order files with exclusive order follow-up
Full inspection: 100% PMI & dimensional check to avoid sand holes, cracks and other defects
Custom options: laser marking, steel stamp, customized packaging
03
After-sales Service
Quality warranty: fast response & solutions for any quality issues
Regular customer follow-up: optimize supply plans based on project feedback, expansion and working condition upgrades
