Customized Welding Flanges have a +40% pressure bearing capacity compared to ordinary flanges, and Longan's products have passed ASME and ISO certification, and the quality is very reliable! "DN600-DN3000 large welded flanges, measured leakage rate ≤0.001%, SGS material report and customized thickness +30% anti-deformation can be provided, come and get a free practical solution"
Fatigue life comparison: After 10⁷ cycles, the crack growth rate of Welding Flanges forgings is 63% lower than that of cast flanges
Through helium mass spectrometry detection: 2500PSI level leakage rate <10⁻⁶ mbar·L/s, much less than the industry average of 10⁻⁴.
Burst pressure redundancy: The measured burst value of ordinary flanges is ≥150PSI, while the measured burst value of 150PSI flanges is ≥600PSI
2. Authoritative certification
With multiple certifications such as ISO 9001, ASME B16.5, PED 2014/68/EU
Summary of third-party test report: TÜV Rheinland: Deformation of sealing surface after 100,000 pressure cycles <8μm
SGS-MT-2025-XXXX: Charpy impact energy 42J@-46℃ (required ≥27J)
3. Anti-extreme working condition solution
Corrosive environment life extended to 15 years+
Special solution for offshore platforms: 316L ultra-low carbon stainless steel: pitting equivalent PREN≥38, while standard 316L is 26, nearly 1.5 times.
Coating system: The Welding Flanges passed ISO12944 C5-M 2500h salt spray test, 300μm FBE+500μm PU.
High temperature and high pressure power station solution:
The difference between thermal expansion coefficient and P91 pipeline is ≤1.5×10⁻⁶/℃, reducing thermal stress cracks
SA-182 F91 material: ordinary carbon steel is only 65MPa, and high temperature yield strength is ≥220MPa@600℃
Come and input: your medium temperature/pressure/pipe diameter and other parameters
We will output:
1. Minimum thickness calculation value
2. Recommended welding flange material grade
3. Bolt load verification report
Get the following engineering files for free:
Downloadable gasket selection matrix for different media
Downloadable high pressure flange installation torque guide (PDF)
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies.
Privacy Policy