Titanium Threaded Flanges (NPT / BSP)

Product Overview

Our Titanium Threaded Flanges (also known as Screwed Flanges) provide a safe, high-integrity connection for piping systems where welding is hazardous, restricted, or impossible. Designed strictly to ASME B16.5 standards using ASTM B381 Forged Billets, these flanges offer exceptional structural density without the porosity risks associated with cast alternatives. They are the preferred choice for hazardous chemical zones (chlor-alkali) and high-pressure instrument lines where ease of assembly and disassembly is critical.

We offer two distinct material grades to match your specific engineering requirements:

• Titanium Grade 2 (UNS R50400): The industry standard for chemical processing, offering immunity to wet chlorine, seawater, and oxidizing acids.
• Titanium Grade 5 (Ti-6Al-4V): A strong alloy perfect for offshore and underwater use, with a tensile strength of at least 895

Why Choose Our Titanium Threaded Flanges?

• Anti-Galling Precision: Threads are cut using 5-Axis CNC Lathes (not hand-tapped) to a surface finish of Ra ≤ 3.2μm, significantly reducing the risk of titanium thread seizing (galling) during installation.
• 100% Forged Integrity: Made using Vacuum Arc Remelting (VAR) and forging methods to guarantee a consistent grain structure and no internal flaws.
• Every flange is tested with a Go/No-Go Gauge to make sure it meets the ANSI B1.20.1 (NPT) or ISO 7-1
• Ready-to-Install: Delivered oil-free with heavy-duty plastic thread protectors to prevent shipping damage.

Key Technical Specifications

Engineered for seamless integration into existing ASME piping systems.

Precision Threading & Anti-Galling Technology

One of the biggest challenges with titanium is its tendency to “gall” (cold weld) under friction. We have engineered our manufacturing process specifically to solve this issue.

1. CNC Machining vs. Tapping

Unlike standard suppliers who often use manual taps which can tear the metal, we utilize CNC Lathes to cut threads. This ensures the thread angle (60° for NPT, 55° for BSP) is geometrically perfect, providing a tighter seal at high pressures without requiring excessive torque.

2. Controlled Surface Finish

We maintain a strict thread surface roughness of Ra ≤ 3.2 μm. This ultrasmooth finish minimises the friction coefficient during assembly, allowing the flange to be tightened securely while significantly lowering the risk of galling.

3. The “Go/No-Go” Guarantee

Quality is not an assumption; it is a measurement. 100% of our threaded flanges are inspected using calibrated thread plug gauges. If a flange does not pass the gauge test freely, it is rejected immediately. This guarantees that the flange you receive will install perfectly onto your pipe nipples or valves without jamming.

Testing & Quality Assurance

We provide complete transparency for critical industries. Every shipment includes a comprehensive documentation package.

• PMI Testing (Positive Material Identification): We use X-ray fluorescence (XRF) spectrometry to verify the chemical composition of every batch (Ti, Al, V, Fe content) ensures you receive genuine Gr2 or Gr5.
• EN 10204 3.1 MTC: A fully traceable Material Test Certificate is provided, listing Heat No., chemical analysis, and mechanical properties.
• Hydrostatic Compatibility: Our flanges are rated to withstand full ASME B16.5 hydrostatic test pressures.
• Traceability: Hard-stamped with Size, Class, Material Grade, Standard, and Heat Number for full lifecycle tracking.

Applications & Installation Recommendations

Typical Application Fields

• Chemical Processing: Ideal for Chlor-Alkali and Bleach plants where welding creates safety hazards (hot work permits) or where piping liners (PTFE/Glass) make welding impossible.
• Offshore Instrumentation: Grade 5 flanges are used in high-pressure hydraulic and injection lines on oil platforms due to their high strength-to-weight ratio.
• Water Treatment: Connecting high-pressure pumps and membranes in seawater Reverse Osmosis (SWRO) desalination systems.

Installation Tips for Titanium Threads

To ensure a leak-free and galling-free connection, we recommend the following:

1. Use Anti-Seize: Always apply a high-quality PTFE tape or a nickel-free anti-seize paste (must be compatible with titanium) to the male threads before assembly.
2. Avoid Overtightening: Titanium threads provide an excellent seal without excessive force. Follow ASME PCC-1 torque guidelines to avoid thread deformation.
3. Galvanic Isolation: Use an isolation gasket and sleeve kit to prevent galvanic corrosion when connecting this titanium flange to a stainless steel or carbon steel valve.

Frequently Asked Questions (FAQ)

Q: What is the difference between NPT and BSP titanium flanges?

A: NPT (National Pipe Taper) is the US standard with a 60° thread angle and tapered profile. BSP (British Standard Pipe) is common in Europe/Asia with a 55° angle. They are not interchangeable. Please confirm your piping standard before ordering to avoid leakage.

Q: Can I weld a titanium threaded flange if needed?

A: While Gr2 titanium is weldable, welding a threaded flange is generally not recommended as the heat may distort the precision thread geometry. For welded connections, we recommend using our Titanium Slip-On or Weld Neck Flanges.

Q: Do you stock Class 2500 high-pressure titanium flanges?

A: We typically stock standard Class 150 and 300 flanges. High-pressure ratings like Class 600, 900, 1500, and 2500 are manufactured to order with a lead time of 7-14 days due to the specialized forging requirements.

Q: How do you prevent thread damage during shipping?

A: We understand titanium is a premium material. All threaded flanges are capped with heavy-duty plastic thread protectors (color-coded by size) and packed in plywood cases with dividers to prevent metal-on-metal contact.

Ready to Order?

Secure your piping system with precision-engineered Titanium Threaded Flanges. These flanges are available directly from the manufacturer, complete with full Material Test Certificates (MTC) and Non-Destructive Testing (NDT) reports.