Threaded Flange

Longan is a direct China factory and manufacturer specializing in Threaded Flange, supplying reliable products at competitive factory prices. By working directly with our manufacturing team, buyers benefit from faster communication, flexible customization, and strict quality control. We also provide free samples and professional technical support. Contact us now to get factory pricing, customization options, and free samples.

Our advantages

1. Dynamic anti-loosening beyond ASTM standards

Test scenario Traditional threaded flange LockThread™ Improvement

Seismic wave (0.5g PGA) Thread jump rate 27% 0 jump 100%

Thermal cycle (-50℃↔150℃) Leakage rate 10⁻³ mbar·L/s ≤10⁻⁷ mbar·L/s 4 orders of magnitude

Axial vibration (30Hz×8h) Preload attenuation 38% Attenuation ≤2% ↓95%

Core structure: 30° wedge-shaped locking surface + self-compensating elastic thread (anti-fretting wear life＞20 years)

2. Improved installation efficiency

Comparison of threaded flange installation at shale gas wellheads in North America (n=200 groups):

| Steps | Welded flange | LockThread™ | Save resources |

| Energy consumption | 18kW·h (welding) | **0.5kW·h** | ↓97% |

| Single group installation time | 45 minutes | **8 minutes** | ↓82% |

| Personnel qualification requirements | 2 certified welders | 1 ordinary technician | Labor cost↓60% |

⇒ CO₂ reduction of **4.8 tons** per 100 groups (equivalent to planting 267 trees)

3. Maintenance-free extreme adaptability

Anti-corrosion black technology: thread impregnation PTFE-graphene composite paste, salt spray corrosion rate 0.001mm/year, 500 times higher than the national standard

Solid medium erosion resistance: In 30% sand + crude oil two-phase flow, thread wear ＜0.01mm/year

Ultra-low temperature sealing guarantee: thread bite strength at -196℃ (LNG working condition) increased by 22%

Carbon neutral economic efficiency

Indicator Welding flange LockThread™ Green benefits

Certification: Threaded Flange has obtained the UL ECV environmental product label and meets the EU carbon border tax (CBAM) exemption standard

Harmful smoke Welding slag + metal vapor Zero pollution Avoid OSHA fines

Single group CO₂ emission 86kg 12kg ↓86%

Scrap recovery value Residual value rate 30% Residual value rate 95% ↑217%

Certification: Obtained the UL ECV environmental product label and met the EU carbon border tax (CBAM) exemption standard

Solve the progressive failure of threads caused by vibration

Harmonic cancellation principle: Threaded Flange thread lead is designed to be 1/2 wavelength of the main frequency of pipeline vibration (ANSYS modal optimization), and the resonance energy is attenuated by 90%

Extreme performance boundary

Environment Breakthrough performance Certification standard

Space vacuum (10⁻⁶Pa) Helium leakage rate <1×10⁻⁹ mbar·L/s ESA ECSS-Q-ST-70-38C

Deep sea swing (30° inclination) 10⁷ cycles zero structural fatigue DNV-OS-F101

Sour gas (H₂S 50ppm) 20 years no sulfide stress cracking NACE TM0177-A

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