Q235 Blind Flange Flange Cover

Three pillars of characteristics:

1 Extreme working conditions such as -20℃ can avoid product failure costs, with a tensile strength of 375MPa, 15 times higher than PPR plastic flange cover!

2 Global project adaptability

3 15 years of maintenance-free, much better than stainless steel

Core differentiation advantages

1. Use in extreme environments: -30℃ resistant to brittle impact, compared with ordinary carbon steel flange covers that are prone to brittle cracking at low temperatures, Q235 breaks through the low temperature limit through special processes

Experiments have proved:

Through GB/T 232 certification, product thickness ≤16mm cold bending test 180° no cracks

Working temperature extends to -30℃~350℃, 50% higher than conventional Q235

2. Zero leakage explosion guarantee

Compared with non-standard thickening design, it exceeds the national standard pressure limit

Test proof:

Helium mass spectrometer leak test ≤1×10⁻⁹ Pa·m³/s, reaching the nuclear industry-grade sealing standard!

The burst pressure reaches PN100, which exceeds the national standard PN40 by 150%

Flatness deviation ≤0.05mm/m

3. Super long service life

• Surface micro-arc oxidation technology replaces ordinary galvanizing

• Data proves:

Compared with 304 stainless steel, the life cycle cost of Q235 Blind Flange Flange Cover is reduced by 42%

Salt spray test for 3000 hours without rust, compared with galvanizing up to 6 times!

Currently, the actual service life of the North Sea oil field project is 25 years

4. Intelligent installation can reach millimeter level

• The industry's first preset laser positioning groove

• Data proves:

Laser scanning detection hole position error ≤±0.2mm

Compared with the industry average installation speed increase of 80%

Using ultrasonic bolt load analysis, bolt stress uniformity ≥ 95%

Data visualization

Sealing level Helium test 1×10⁻⁹ Water test 1×10⁻⁵ 100,000 times

Installation efficiency 9.5 minutes 45 minutes 375%

Performance dimension Our company's Q235 blind plate Conventional competitive products Improvement

Low temperature toughness -30℃/27J -10℃/18J +150%

Salt spray corrosion resistance 3000h 500h 6 times

"When the DN800 flange covering the Alaska oil pipeline is subjected to 9.8MPa and -28℃ cold night impact, our Q235 Blind Flange Flange Cover is refreshing the safe operation record: 12 years of zero leakage, come and contact us to solve your pipeline sealing needs!