Large flange

Large Flange - Heavy-Duty Industrial Connection Solutions

XI AN LINHUI specializes in manufacturing Large flange systems engineered for critical industrial applications. Our products span diameters from DN300 to DN3500mm, utilizing materials including stainless steel, carbon steel, and Inconel 625. With compressive strength ratings from 0.25kg to 64kgMPa, these horizontal welding-type flanges deliver reliable performance in demanding environments.

Backed by 20+ years of manufacturing expertise, we've supplied hundreds of thousands of tons to 60+ countries. Our factory-direct pricing and comprehensive certification portfolio ensure you receive cost-effective solutions without compromising quality.

Key Features & Benefits

Heavy-Load Capacity

Engineered to handle extraordinary weight conditions, our ribs keep up basic keenness beneath cyclic stacking and warm stress.

Corrosion-Resistant Materials

Inconel 625 and high-grade stainless steel choices stand up to chemical assault in forceful media. Carbon steel variations include defensive coatings for expanded benefit life.

Precision Manufacturing

Dimensional resistance controlled inside ±0.5mm guarantees idealize arrangement amid establishment. CNC machining ensures reliable bore concentricity.

Flexible Distance across Range

From DN300 for standard channeling to DN3500mm for mega-projects, we suit assorted framework prerequisites.

​​​​​​​Product Information

Chemical Composition

Stainless Steel 316L

C ≤0.03%, Cr 16-18%, Ni 10-14%, Mo 2-3%, balanced Fe. Excellent pitting resistance in chloride environments.

Carbon Steel A105

C ≤0.35%, Mn 0.60-1.05%, P ≤0.035%, S ≤0.040%. Standard-grade material for general-purpose applications.

Inconel 625

Ni ≥58%, Cr 20-23%, Mo 8-10%, Nb 3.15-4.15%. Superior resistance to reducing acids and high-temperature oxidation.

Certified mill test certificates (EN 10204 3.1/3.2) verify material composition for every batch.

Manufacturing Process

Fabric Choice & Inspection

Raw materials experience spectroscopy testing to affirm chemical composition some time recently machining.

Precision Forging

Hot fashioning at controlled temperatures refines grain structure. Post-forging warm treatment soothes leftover stress.

CNC Machining

Multi-axis machining centers execute jolt gap penetrating, fixing surface wrapping up, and dimensional profiling to ±0.2mm accuracy.

Surface Treatment

Options incorporate pickling, electropolishing, epoxy coating, or galvanization based on application requirements.

Quality Inspection

Non-Destructive Testing (NDT)

100% ultrasonic testing (UT) recognizes inside blemishes. Attractive molecule review (MPI) recognizes surface cracks.

Dimensional Verification

Coordinate measuring machines (CMM) approve basic measurements counting jolt circle breadth and rib thickness.

Pressure Testing

Hydrostatic testing to 1.5x plan weight affirms leak-tight integrity.

Third-Party Certification

SGS, BV, TÜV, and DNV assessment administrations accessible upon ask.

Applications

Offshore Wind Power

Large flange connections secure monopile foundations to transition pieces in 4-8 meter diameters. EN 1092-1 compliant designs withstand saltwater corrosion and fatigue loading.

Petrochemical Processing

ASME B16.47 Series A flanges with RTJ facings contain volatile hydrocarbons in reactors operating above 400°C and 2500 Class pressure ratings.

Municipal Water Infrastructure

AWWA C207 Class D/E/F flanges connect pumps and valves in desalination plants. Epoxy-coated variants handle turbulent flow and water hammer effects.

Power Generation

Boiler feed systems and steam turbine connections require high-temperature alloys like Inconel 625 for creep resistance.

Export Markets

Essential Regions

North America (USA, Canada), Europe (Germany, France, UK), Center East (UAE, Saudi Arabia), Southeast Asia (Singapore, Malaysia).

Established Partnerships

Long-term supply understandings with CEFC, PTT, PETRONAS, LUKOIL, and PEMEX illustrate our capability in large-scale EPC projects.

Compliance Documentation

CE checking, PED 2014/68/EU, REACH/RoHS certificates encourage traditions clearance over all jurisdictions.

Why Choose Us?

Factory-Direct Pricing

No middle people implies 15-20% fetched reserve funds compared to wholesaler networks.

Rapid Turnaround

Stock things dispatch inside 3-7 days. Custom manufacture completes in 25-40 days with surge alternatives available.

Full Traceability

Heat number following and EN 10204 3.1/3.2 documentation guarantee total fabric history.

Engineering Support

In-house metallurgists help with fabric determination and plan optimization for your particular working conditions.

Quality Assurance

ISO 9001:2015 certified fabricating forms ensure reliable item performance.

Packaging & Shipping

Protective Packaging

Flanges get plastic caps on fixing surfaces. Wooden cases or steel outlines avoid travel harm for larger than usual units.

Shipping Methods

Sea cargo for bulk orders, discuss cargo for pressing necessities. Coxcomb, CIF, and DDP terms available.

Documentation

Commercial receipt, pressing list, process test certificates, and certificate of beginning given with each shipment.

FAQ

Q: What's the most extreme distance across you can produce?

A: Our current capacity comes to DN3500mm. For bigger breadths, counsel our designing group for possibility assessment.

Q: Do you acknowledge little trial orders?

A: Yes, least arrange amounts begin from 100kg for stock materials.

Q: Can you customize jolt gap patterns?

A: Completely. Give your specialized drawings for non-standard configurations.

Q: What's the lead time for Inconel 625 flanges?

A: Ordinarily 30-35 days due to specialized fabric sourcing and warm treatment requirements.

Q: Are weariness life calculations accessible for seaward applications?

A: Our engineers give push investigation reports based on DNV-GL benchmarks upon ask.

Request a Quote

Ready to source reliable Large flange solutions for your project? Contact our technical team at linhui@lhtitanium.com with your specifications.