Elbow Flange

Elbow Flange – Precision-Engineered Connection Components

Elbow flange, which are removable assemblies that combine flanges, gaskets, and bolts to produce a dependable sealing structure, are crucial parts of flange connections and flange joints. With pressure ratings ranging from Class 150 to Class 2500, XI AN LINHUI specializes in producing premium Flange solutions that meet ASTM B363 and ASME B16.9 requirements. Superior leak-proof performance is ensured by our products' precision-machined sealing faces (Raised Face, Flat Face, RTJ) with thickness tolerance maintained within ±0.05mm.

We provide both Long Radius (1.5D) and Short Radius (1.0D) configurations appropriate for offshore platforms, chemical processing, and hydraulic power systems, and we have more than 200 tons of ready stock with EN 10204 3.1/3.2 full traceability.

Key Features & Benefits

Increased Resistance to Corrosion

Elbow flange made of titanium are resistant to harsh media, such as seawater, nitric acid, and chloride solutions. This removes the possibility of galvanic corrosion, which is frequent with stainless steel.

Elevated Fatigue Power

Grain flow alignment is guaranteed by drop-forged construction, which offers outstanding resistance to vibration-induced stress and cyclic pressure loading.

Performance of Hermetic Sealing

Ra 3.2μm finish is achieved via CNC-machined sealing surfaces. For zero-leakage applications, compatible with RTJ, spiral wound, and PTFE gaskets.

Space Optimization 90-degree redirection reduces the installation footprint in small areas, such as mobile machinery compartments and offshore platforms.

Manufacturing Process

1. Selection of Materials

According to ASTM B348 standards, certified titanium billets are subjected to chemical composition verification. Laser marking is used to establish heat lot traceability.

2. Forging with a drop

In order to maximize grain flow and remove internal cavities, heated billets are forged using a closed-die method at regulated temperatures (850–950°C).

3. Heating

Uniform microstructure and dimensional stability are ensured by stress relief annealing at 650°C and regulated cooling.

4. CNC Production

Sealing faces, bolt holes, and bore dimensions are produced by multi-axis machining centers to ISO 1127 tolerances.

5. Surface Maintenance

pickled to get rid of surface oxides in an HNO3-HF solution. Corrosion resistance is improved by passivation treatment.

Quality Inspection

Dimensional Verification

ASME B16.5 states that CMM scanning confirms flange face flatness (≤0.05mm per 100mm), concentricity, and bolt hole position.

Non-destructive testing (NDT), 100% ultrasonic testing (UT), and dye penetrant inspection (PT) are used to remove surface fractures and interior discontinuities.

Checking for Pressure

Hydrostatic testing at 1.5× rated pressure verifies structural integrity under operational stress.

Material Certification EN 10204 3.1/3.2 certificates document chemical composition, mechanical properties, and heat treatment parameters.

Applications Of Elbow Flange

Platforms for Offshore Oil and Gas

used in subsea manifolds and Christmas tree assembly where standard materials are challenged by vibration and seawater corrosion.

Chemical Processing Facilities

Preventing liner degradation while preserving directed flow is crucial for PTFE-lined pipe systems that handle strong acids.

Units of Hydraulic Power

Excavators' SAE Flange connectors can sustain pressure surges of more than 6000 PSI, allowing for quick field replacement.

Facilities for Desalination

In reverse osmosis systems and brine discharge lines, titanium variations withstand chloride stress corrosion cracking.

Export Markets

LINHUI has supplied more than 300,000 tons of titanium goods to more than 60 nations, including:

North America: the United States, Canada, and Mexico

Europe: Germany, France, the Netherlands, and the United Kingdom

Middle East: United Arab Emirates, Saudi Arabia, and Qatar

Asia-Pacific: Japan, South Korea, Singapore

Latin America: Brazil, Colombia, and Ecuador

PETRONAS, LUKOIL, PEMEX, and foreign EPC contractors depend on us for mission-critical projects.

Why Choose Us

Direct Mill Supply

Factory-direct pricing eliminates intermediaries. You receive ISO 9001:2015 certified products at competitive rates.

Rapid Response

Quotations within 4 hours, drawing reviews in 24 hours. Stock orders ship in 3–7 days.

Engineering Support

In-house metallurgists provide material selection guidance and custom fabrication solutions for complex projects.

Flexible MOQ

Trial orders start at 100 kg. We support both prototyping and large-scale procurement.

Packaging & Shipping

Preservation Method

Flanges are coated with rust-preventive oil and sealed with VCI (Volatile Corrosion Inhibitor) bags to prevent moisture ingress.

Standard Packaging

Wooden cases or steel crates with foam inserts protect machined surfaces during transit. Export-grade fumigation certification included.

Shipping Options

Express (3–5 days), Air freight (5–7 days), Sea freight (20–35 days). FOB Xi'an, CIF, and DDP terms available.

FAQ

Q: What distinguishes elbow flanges with a long radius from those with a short radius?

A: Long Radius (1.5D) is perfect for high-velocity flows because it reduces erosion and pressure drop. In small installations, Short Radius (1.0D) conserves space.

Q: Are material certificates available?

A: Yes. EN 10204 3.1 certificates with complete traceability are included with every product. On request, third-party inspection (SGS, TÜV) is offered.

Q: For custom specs, what is your minimum order quantity?

A: For stock grades, trial orders starting at 100 kg are accepted. According to specifications, custom forgings must weigh at least 500 kg.

Q: Do you provide flanges that comply with NORSOK M-650?

A: Absolutely. For offshore applications, we produce Grade 2 and Grade 7 titanium flanges that satisfy NORSOK standards.

Q: How do you guarantee the quality of the sealing surface?

A: Ra 3.2μm finish is achieved using CNC machining. Using laser scanning, post-machining inspection confirms flatness within a tolerance of 0.05 mm.---

Request a Quote

Ready to enhance your project with premium Elbow Flange solutions? Our technical team is prepared to discuss your specifications, pressure requirements, and delivery timelines.

Contact us today:

Email: linhui@lhtitanium.com

Get your customized quote within 4 hours. Stock available for immediate shipment.