Large Diameter Flanges

Large Diameter Flanges

XI AN LINHUI offers industrial-grade Large Diameter Flanges manufactured from stainless steel, carbon steel, and Inconel 625, available in sizes DN300-DN3500mm with compressive strength ranging from 0.25kg to 64kg MPa. Our horizontal welding-type flanges are produced across two dedicated factories operating 30 titanium metal production lines, backed by 21 years of titanium metal manufacturing expertise.

With an annual production capacity of 800 tons, we maintain strict quality control through ISO/SGS/TUV certifications. We offer flexible delivery via DHL, FEDEX, air freight, or sea freight to meet your project timelines globally.

Key Features & Benefits

Our products deliver predominant auxiliary judgment for heavy-duty mechanical applications. Planned to withstand extraordinary weight and destructive situations, they guarantee leak-proof associations in basic systems.

You advantage from precision-engineered items that decrease downtime and upkeep costs. The welding association sort gives improved solidness compared to strung alternatives.

Multi-material choices permit you to select ideal erosion resistance and quality for your particular working conditions.

Specifications

Chemical Composition

Our flanges meet stringent material composition standards:

Stainless Steel (316L): ≤0.03% C, 16-18% Cr, 10-14% Ni, 2-3% Mo

Carbon Steel (A105): ≤0.35% C, 0.60-1.05% Mn, ≤0.35% Si

Inconel 625: 58% Ni, 20-23% Cr, 8-10% Mo, 3.15-4.15% Nb

Each batch includes full material traceability certificates per EN 10204 3.1/3.2 documentation standards.

Manufacturing Process

We employ controlled forging and heat treatment processes to ensure grain structure uniformity. Machining operations utilize CNC technology for dimensional accuracy within ±0.5mm tolerance.

Post-machining, all products undergo stress relief annealing to eliminate residual stresses. Surface treatments include pickling, passivation, or epoxy coating based on application requirements.

Final dimensional verification uses coordinate measuring machines (CMM) to guarantee conformity with drawing specifications.

Applications

Offshore Wind Power: Our flanges connect monopile foundations to transition pieces in turbines, handling cyclic loading and saltwater corrosion in diameters up to 8 meters.

Petrochemical & Oil Refining: Used in hydrocracking reactors and distillation columns where Large Diameter Flanges contain volatile hydrocarbons at temperatures exceeding 400°C and pressures over Class 2500.

Municipal Water Transmission: Essential for main supply lines and desalination plants, managing turbulent flow and water hammer effects in large-scale pumping systems.

Power Generation: Connect steam turbines, boilers, and cooling systems in thermal and nuclear power facilities requiring exceptional reliability.

Why Choose Us?

Coordinate process supply disposes of go betweens, giving you factory-direct estimating without compromising quality. Our 21-year fabricating legacy ensures handle ability and steady item performance.

Flexible MOQ bolsters trial orders beginning from 100kg, obliging both huge ventures and model prerequisites. Our building group gives specialized meeting for fabric determination and application optimization.

Stock stock empowers 3-7 day conveyance for standard sizes, whereas custom manufacture completes inside 25-40 days. Multilingual back in English, Chinese, Spanish, and Arabic encourages smooth communication.

Packaging & Shipping

Flanges are exclusively wrapped in moisture-proof VCI paper and secured in plywood cartons with shock-absorbing materials. Cartons are fumigation-treated per ISPM 15 benchmarks for worldwide shipping.

We orchestrate door-to-door coordinations by means of DHL and FEDEX for pressing orders, discuss cargo for medium volumes, and ocean cargo for bulk shipments. All shipments incorporate following data and protections coverage.

Export Markets

We've effectively conveyed items to over 60 nations over North America, South America, the Center East, Africa, CIS districts, and Southeast Asia.

Long-term organizations exist with major endeavors counting CEFC, PTT, PDVSA, PETROECUADOR, PETRONAS, LUKOIL, and PEMEX. Our worldwide reach guarantees localized back and coordinations ability.

Quality Inspection

Every flange undergoes 100% visual inspection and dimensional measurement. Non-destructive testing includes ultrasonic examination (UT) and magnetic particle inspection (MT) for surface and subsurface defect detection.

Hydrostatic testing validates pressure integrity at 1.5 times the design pressure. Third-party inspection services from SGS, TUV, or BV are available upon request.

All products ship with complete documentation including material test certificates, inspection reports, and compliance statements.

FAQ

Q: What's the greatest distance across you can supply?

A: We fabricate the item up to DN3500mm, with custom measuring accessible upon request.

Q: Do you give fabric certificates?

A: Yes, each arrange incorporates EN 10204 3.1 certificates with full chemical composition and mechanical property test results.

Q: What's your lead time for custom orders?

A: Standard generation requires 15-25 days; complex custom manufactures require 25-40 days depending on specifications.

Q: Can you handle little amount orders?

A: Completely. Our adaptable MOQ arrangement acknowledges orders beginning from 100kg to bolster your extend needs.

Q: Which guidelines do your ribs comply with?

A: We make to ASME B16.47, EN 1092-1, AWWA C207, and other universal measures per client necessities.

Request a Quote

Ready to source reliable Large Diameter Flanges for your next project? Contact our technical team at linhui@lhtitanium.com with your specifications, and receive a detailed quotation within 4 hours.