ASME B16.5 Threaded Flange

ASME B16.5 Threaded Flange

Precision-engineered ASME B16.5 Threaded Flange solutions made in accordance with ASME B16.5 and API 5A specifications are provided by LINHUI Titanium. Our flanges satisfy the most stringent piping system requirements with a diameter range of 1/2 to 24 inches (DN15-DN600) and pressure ratings ranging from Class 150 to 2500.

We reach an annual output of 800 tons with the support of two manufacturing facilities running 30 titanium production lines and 21 years of established experience. Complete test results, ISO certification, and CE are included with every product. We ship internationally by air, sea, DHL, and FedEx.

Key Features & Benefits

Our threaded flanges are perfect for field maintenance and modifications since they are simple to install without the need for welding. In high-chloride conditions, where conventional materials fail, the precisely cut threads guarantee leak-tight connections.

In harsh media like hot brine, seawater, and wet chlorine, you have a longer service life. In spite of temperature variations, the high strength-to-weight ratio preserves pressure integrity while lowering structural load.

Specifications

Manufacturing Process

To reduce contaminants, we begin with vacuum-melted titanium sponge. To avoid oxygen contamination and alpha case development, the forging process takes place in a protected atmosphere.

Thread profiles produced by precise CNC machining adhere to ASME B16.1 specifications. To maximize grain structure and mechanical qualities, each ASME B16.5 Threaded Flange is subjected to a regulated heat treatment.

Pickling is used to remove scale from surfaces, and passivation is used to improve the production of natural oxide layers.

Quality Inspection

Chemical Analysis & PMI: Handheld XRF verification identifies hydrogen levels that prevent embrittlement and verifies that the iron content remains below 0.30%.

Mechanical Testing: According to ASTM B381, tensile, yield strength, and elongation tests verify the pressure containment capabilities listed in EN 10204 3.1 certifications.

NDT Protocols: Dye Penetrant Inspection looks for surface flaws in thread roots and sealing faces. Internal cavities in forged bodies can be found by ultrasonic testing.

Dimensional Verification: The bolt circle diameter, flange face roughness (Ra 3.2-6.3µm), and thread pitch all satisfy ASME B16.5 table specifications.

Applications Of ASME B16.5 Threaded Flange

Offshore Platforms: MIC resistance in oxygenated saltwater and minimal crevice corrosion are advantages for firewater systems and seawater cooling loops.

Chlor-Alkali Plants: Titanium's resistance to stress cracking caused by chlorine is essential for hypochlorite piping and wet chlorine gas lines.

Desalination Facilities: Intake piping flanges minimize the need for cathodic protection while removing concerns about galvanic corrosion.

Marine Engineering: For simpler ROV installation in deep-water applications, subsea riser connectors take advantage of the high strength-to-weight ratio.

Our Factory

Linhui is a modern factory with 21 years of experience in titanium metal manufacturing, positioning us as a leader in the titanium industry. Our facilities feature advanced technology and a dedicated team focused on delivering superior-quality titanium products global

Certifications

We hold multiple certifications that testify to our commitment to quality and compliance, including:

• Manufacturing License of Special Equipment of China
• TUV Nord AD2000-W0 Certification
• PED 2014/68/EU Certification
• Certifications from CCS, ABS, DNV, BV, BSI, LLOYD'S, GL, ISO 9001:2015, and more.

  

   

Export Markets

More than sixty nations throughout North America, South America, the Middle East, Africa, and Southeast Asia have received our shipments. Our worldwide dependability is confirmed by long-standing collaborations with CEFC, PTT, PDVSA, PETROECUADOR, PETRONAS, LUKOIL, and PEMEX.

Throughout procurement cycles, our multilingual support staff helps clients who speak Arabic, Spanish, and English.

Why Choose Us

Direct Mill Supply: Factory-direct pricing eliminates middlemen while maintaining full metallurgical traceability via heat number documentation.

Rapid Response: You receive quotations within 4 hours, drawing reviews in 24 hours, and stock shipments in 3-7 days.

Flexible Orders: Trial orders start at 100 kg with 200+ tons of inventory available for immediate dispatch.

Engineering Support: In-house metallurgists provide material selection consultation and technical problem-solving for complex piping systems.

Packaging & Shipping

Each flange is individually wrapped in polyethylene and then packaged in a plywood case that satisfies ISPM 15 fumigation requirements. Thread protectors guard against damage while in transit.

For urgent samples, we organize DHL/FEDEX; for medium-sized orders, we arrange air freight; and for bulk orders, we arrange sea freight with full export documents, such as origin certificates, packing lists, and commercial invoices.

FAQ

Q: Can I use titanium flanges with stainless steel flanges?

A: Dimensionally compatible but requires isolation kits (sleeves/washers) to prevent galvanic corrosion in wet environments.

Q: Do you need post-weld heat treatment?

A: Generally not required for Grade F2 or F12, though stress relief may benefit complex piping configurations.

Q: What gasket material works best?

A: PTFE or spiral wound gaskets with titanium windings. Avoid graphite in strong oxidizer applications.

Q: How do pressure ratings compare to steel?

A: Consult ASME B16.5 Table 2-3 for temperature derating. Titanium strength decreases faster above 300°C.

Q: Why the price difference from steel?

A: Energy-intensive Kroll process and vacuum forging requirements create higher base costs.

Request a Quote

Please send your ASME B16.5 threaded flange specifications to linhui@lhtitanium.com to contact our engineering team. We'll provide technical consultation, material certificates, and competitive pricing within 4 hours.