Flange
Pipe Fitting
Pre-sales Service
CAD drawing review & custom special flange design
Samples available for testing
Samples available for testing
DAYE
ABOUT US
Zhejiang Daye Flange Co., Ltd. is a professional manufacturer integrating scientific research, design and development, manufacturing and operation of various flanges. With its unique advantages
and unremitting efforts, Daye Flange Pipe Fitting Co.,Ltd. has finally occupied a place in the field of flange development and production. The company has a long history, strong strength,
excellent equipment and first-class quality.
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Production
Equipment
Quality
Inspection
- PED
- ISO9001
- ISO14001
- ISO45001
- TS
CERTIFICATES
Leveraging advanced forging techniques and strict quality control to serve worldwide project requirements.
PRODUCTS
Main products include standard flanges made of carbon steel, stainless steel, and special high-temperature corrosion-resistant alloys, with nominal diameters ranging from DN15 to DN5000.
WE CRAFT DURABLE, HIGH-QUALITY PIPE FLANGES & FITTINGS
Quality Control
Meticulous and rigorous management ensures high product quality, and developing and producing high-quality products and providing satisfactory service to customers are our top priorities.
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International Quality Authentication
Our company holds ISO9001 quality management system certification, TS license for special equipment, and ISO14001 environmental management system certification, providing one-stop procurement services for domestic and international clients. -
Multiple Inspection Support
100% PMI, dimensional inspection, tensile testing, non-destructive testing(UT/PT/MT), hardness testing, metallographic analysis, surface roughness measurement, impact testing and a full range of other inspection services.
Customer Service
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In-sales ServiceSeparate 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 -
After-sales ServiceQuality warranty: fast response & solutions for any quality issues
Regular customer follow-up: optimize supply plans based on project feedback, expansion
and working condition upgrades
Get Free Samples
FLANGE EXPERTISE: TIPS, NEWS & UPDATES
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![What Is A Stainless Steel Pipe Cap?]()
18 Jun, 2026What Is A Stainless Steel Pipe Cap?View DetailsStainless steel caps, also known as plugs or end caps, are pipe fittings welded to or installed on the external threads of pipe ends to seal the pipe. The ma... -
![Application Areas Of Stainless Steel Tube Sheets]()
17 Jun, 2026Application Areas Of Stainless Steel Tube SheetsView DetailsWidely used in various heat exchange equipment, such as condensers, evaporators, and reboilers. In the petrochemical industry, it is used for heat exchange i...
