Butt-welding flange

Butt-Welding Flange | High-Pressure Titanium Connection Solution

XI AN LINHUI IMPORT AND EXPORT Co., LTD. manufactures industrial-grade butt-welding flanges engineered for demanding high-pressure applications. Our product range covers pressure ratings from 1.6MPa to 4.0MPa, with flange thickness spanning 14-70mm and theoretical weights from 0.55 to 515KG. Each butt-welding flange undergoes precision machining to ensure bore alignment and structural integrity. Direct mill supply guarantees consistent quality control and full material traceability. We serve petrochemical, power generation, and offshore industries with certified titanium flanges meeting ASTM/ASME standards. Over 200 tons of stock inventory enables rapid delivery within 3-7 days for standard specifications

Key Features & Benefits

Smooth Bore Transition

Our flanges eliminate turbulence pockets that cause erosion-corrosion in high-velocity fluid systems. The matched bore design maintains consistent flow characteristics.

Superior Pressure Resistance

Engineered for systems operating up to 4.0MPa, these flanges handle extreme pressure fluctuations without structural compromise. Robust hub construction prevents creep rupture during thermal cycling.

Zero Contamination Risk

Precision welding without filler metals preserves base material corrosion resistance. Critical for chemical processing environments requiring material purity.

Manufacturing Process

Forging & Heat Treatment

Raw titanium billets undergo controlled forging at optimal temperatures. Solution annealing eliminates residual stresses and refines grain structure.

Precision Machining

CNC machining ensures dimensional accuracy within ±0.05mm tolerance. Bore diameter matches pipe ID for seamless fluid transition.

Welding Preparation

Beveled edges are prepared to J-groove or V-groove specifications. Surface roughness controlled below Ra 3.2μm for optimal weld penetration.

Quality Inspection

Dimensional Verification

CMM measurement confirms all critical dimensions including bore diameter, flange thickness, and bolt hole positioning.

Non-Destructive Testing

100% ultrasonic testing detects internal discontinuities. Dye penetrant inspection reveals surface flaws exceeding 0.1mm.

Pressure Testing

Hydrostatic testing at 1.5x design pressure validates structural integrity. All units supplied with EN 10204 3.1 certificates.

Applications Of Butt-welding flange

High-Pressure Petrochemical Pipelines

Refineries transporting hydrocarbons at pressures exceeding 2000 psi rely on butt-welding flanges for leak-free connections. The smooth bore eliminates erosion-corrosion hotspots in volatile fluid streams.

Superheated Steam Systems

Power plants use these flanges in main steam lines operating at 1000°F (538°C). Matched bore design prevents thermal fatigue during rapid cycling.

Subsea Gas Manifolds

Offshore installations requiring Schedule XXS heavy-wall pipe connections benefit from the flange's mechanical strength against ocean currents and hydrostatic pressure.

Export Markets

North America | Europe | Middle East

Southeast Asia | CIS Countries | South America

We maintain long-term partnerships with CEFC, PTT, PDVSA, PETRONAS, and LUKOIL across 60+ countries.

Why Choose Us

Factory-Direct Pricing

No middlemen ensures competitive rates without compromising quality. Direct mill access provides cost efficiency.

Full Traceability

Every flange includes heat number documentation and material test certificates. Complete compliance with EN 10204 3.1/3.2 requirements.

Rapid Response

Quotations within 4 hours. Stock orders ship in 3-7 days. Custom fabrication completed in 25-40 days.

Packaging & Shipping

Protection Standards

Flanges are wrapped in VCI paper and secured in plywood cases. Fumigation-certified wooden packaging for international shipping.

Logistics Options

Sea freight for bulk orders. Air freight available for urgent requirements. DDP/DDU terms supported.

FAQ

Q: What's the minimum order quantity?

A: We support trial orders starting from 100kg. Stock items available in smaller quantities.

Q: Can you provide third-party inspection?

A: Yes. SGS, BV, TÜV, DNV, and ABS inspections arranged upon request.

Q: Do you offer custom dimensions?

A: Absolutely. Our engineering team reviews drawings within 24 hours and provides fabrication feasibility analysis.

Q: What delivery time for non-stock specifications?

A: Standard production requires 15-25 days. Complex custom orders take 25-40 days depending on specifications.

Q: Are your products FDA compliant?

A: Grade 2 and Grade 23 ELI materials meet FDA biocompatibility standards for medical applications.

Request a Quote

Get competitive pricing for your butt-welding flange requirements today. Contact our technical team at linhui@lhtitanium.com with your specifications. We respond within 4 hours with detailed quotations.