Flange cover
Connection method: Welding
Standard: American Standard
Diameter: 219mm
Compressive strength: 50mpa
Special function: High-pressure resistance
Process: Rolling
Flange Cover - High-Pressure Titanium Flange Protection Solutions
LINHUI TITANIUM manufactures industrial-grade Flange cover solutions engineered for demanding pipeline protection requirements. Our titanium flange feature American Standard welding connection with 219mm diameter capacity and exceptional 50MPa compressive strength. Manufactured through precision rolling processes, these high-pressure resistance covers ensure superior sealing integrity for oil & gas, chemical processing, and marine applications.
With controlled cold rolling technology maintaining thickness tolerance within ±0.05mm, our Flange cover products deliver consistent dimensional accuracy. Each unit undergoes 100% NDT inspection to guarantee zero-defect performance in critical sealing environments.
Key Features & Benefits
Superior Pressure Resistance
Engineered to withstand 50MPa compressive loads, protecting flange faces during storage and transportation.
Corrosion-Proof Construction
Titanium material resists chloride attack, industrial acids, and saltwater exposure without surface degradation.
Precision Dimensional Control
Rolling process ensures uniform wall thickness and perfect fit for 219mm diameter flanges.
Lightweight Design
60% lighter than steel equivalents, reducing handling costs while maintaining structural integrity.
Product Information For Flange cover
| Product name | flange cover |
| Connection method | Welding |
| Standard | American Standard |
| Diameter | 219mm |
| Compressive strength | 50mpa |
| Special function | High-pressure resistance |
| Process | Rolling |
| Wall thickness | 6mm |
| Surface treatment | Hot dip galvanizing |
| Packaging | Wooden box pallet |
Manufacturing Process
Step 1: Material Selection
Virgin titanium billets undergo chemical composition verification per heat number traceability.
Step 2: Precision Rolling
Controlled cold rolling achieves uniform wall distribution and dimensional accuracy within ±0.05mm tolerance.
Step 3: Forming & Welding
CNC forming creates flange geometry. Automated TIG welding ensures leak-proof seams without filler metal.
Step 4: Heat Treatment
Stress relief annealing at 650°C eliminates residual stresses and optimizes mechanical properties.
Step 5: Surface Treatment
Acid pickling removes oxide scale, followed by passivation to enhance natural corrosion resistance.
Quality Inspection
· Ultrasonic Testing (UT) – 100% coverage
· Eddy Current Testing (ECT) for surface defects
· Dimensional verification using CMM equipment
· Pressure testing to 1.5x working pressure
· Material certificates (EN 10204 3.1/3.2)
· Third-party inspection available (SGS, TÜV, DNV)
Applications
Oil & Gas Pipeline Projects
Protect machined flange faces during EPC construction phases in laydown yards exposed to sand and saltwater.
Chemical Processing Plants
Shield valve flanges from aggressive acids (HCl, H₂SO₄) during shutdown maintenance periods.
Marine & Offshore Platforms
Prevent chloride-induced pitting on riser flanges and subsea equipment during long-term storage.
Valve Manufacturing
Post-hydrotest protection ensures scratch-free delivery of high-precision control valves to end users.
Export Markets
Our Flange products are exported to 60+ countries:
· North America: USA, Canada, Mexico
· Middle East: UAE, Saudi Arabia, Qatar
· Southeast Asia: Singapore, Malaysia, Thailand
· Europe: Germany, France, Netherlands
· South America: Brazil, Ecuador, Colombia
Why Choose Us
24-Year Industry Expertise
Since 2000, LINHUI TITANIUM has delivered hundreds of thousands of tons to global EPC contractors like CEFC, PTT, and PEMEX.
Factory-Direct Pricing
Mill-direct supply eliminates middlemen, reducing your procurement costs by 15-30%.
Rapid Response Service
Quotation within 4 hours, stock delivery in 3-7 days, custom fabrication in 25-40 days.
Full Traceability Documentation
Every product includes heat number tracking, ASTM/ASME compliance certificates, and PED 2014/68/EU certification.
Flexible Order Quantity
Trial orders from 100kg supported with 200+ tons of ready stock inventory.
Packaging & Shipping
Typical Packaging:
Steel strapping → wooden containers → individual plastic covers + bubble wrap
For maritime freight, moisture-resistant desiccants are included.
Options for Shipping:
Express (FedEx/DHL): samples take three to five days.
For urgent orders, air freight takes 7–10 days.For large cargo, sea freight takes 25 to 35 days.
Documentation for Export:
Commercial invoice, packing list, material test reports, certificate of origin, and, if necessary, fumigation certificate
FAQ
Q: Can you customize flange cover dimensions for non-standard sizes?
A: Yes. Send us your flange OD, ID, and bolt circle diameter. We provide drawings within 24 hours and custom fabrication in 25-40 days.
Q: How does titanium compare to plastic flange protectors?
A: Titanium offers permanent reusability, handles extreme temperatures (-269°C to +400°C), and resists chemical degradation unlike HDPE or PP plastic caps.
Q: Do you provide vented designs for moisture escape?
A: Absolutely. Our vented Flange models feature pressure-equalization holes with mesh filters to prevent FOD ingress while allowing condensation release.
Q: What prevents galling during installation?
A: We apply molybdenum disulfide anti-seize coating on threaded variants. Proper torque specifications are included with each shipment.
Q: Are certifications available for NORSOK projects?
A: Yes. We provide NORSOK M-650 compliance documentation and third-party inspection reports from DNV or ABS upon request.
Request a Quote
Need high-pressure Flange cover solutions for your project? Contact our engineering team today.
Email: linhui@lhtitanium.com
Share your flange specifications, quantity, and delivery timeline. Expect technical consultation and competitive pricing within 4 hours.
