1. Line matching system and analysis report download
17 types of working condition failure analysis reports are downloaded, allowing us to analyze the problem, and Longan has an online matching system: you can enter pipeline parameters for automatic calibration.
2. Evidence of production efficiency empowerment, welding hours comparison
"Our optimized version": 22 minutes/group
"Traditional flange": 38 minutes/group
3. Anti-counterfeiting traceability
Each piece of 304 flat welding flange has a unique melting batch number - heat treatment curve - inspector number and laser microcode, which can detect the authenticity of the product
4. Sustainable procurement
Recycling rate: production waste can be 100% remelted, no waste, and all can be recycled
5. Product environmental protection
Carbon emissions per ton of product are 28% lower than the industry average, reaching only 1.2tCO₂e
6. Industry recognition and certification
We have the EU CE certification: Certificate No. CE 279/24
Our CNOOC strategic procurement agreement number: COSL-FL-2024-304
Core indicators Actual measured data Verification method
Material composition Cr 18.2%, Ni 8.5% SGS test report №SH202407X
Sealing surface flatness ≤0.05mm (RA 3.2μm) Laser interferometer video
PN16 pressure bearing capacity Burst pressure ≥42MPa Lloyd's certification
Dimensional compliance rate 99.87% (DN15-DN600) 2024 export sampling data
Salt spray test 1008h no red rust ASTM B117 video record
Q: How to avoid purchasing fake 304 flat welding flanges?
A: Provide handheld spectrometer usage tutorial + free rental service
Q: What is the difference between 304 flat welding flanges and forged flanges?
*A: The rolling process grain size reaches level 7, which is better than international products
Q: Does it support food grade certification?
A: All products pass FDA 21 CFR §177.1820
Q: How long is the delivery cycle?
A: Ordinary products are shipped within 15 days, and expedited products can be shipped faster
Address
NO. 620, MINGZHU ROAD, YONGXING STREET, LONGWAN DISTRICT, WENZHOU CITY, ZHEJIANG PROVINCE, CHINA.
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