Technical sourcing guide
Titanium Flange Types, Grades & RFQ Requirements: specifications, grades and supply options
Use the information below to prepare a clear RFQ. Final availability depends on grade, size, quantity, specification revision and required documentation.
ASTM B381 / ASME SB381 for titanium forgings; flange dimensions may reference ASME B16.5, ASME B16.47 or an approved customer drawing.
Commercially pure Grades 1, 2, 3 and 4 plus alloy Grades 5, 7 and 12, selected by pressure, temperature, corrosion and welding requirements.
Weld neck, slip-on, blind, threaded, socket-weld and drawing-specific flanges; NPS, pressure class, facing, bore and drilling are RFQ-controlled.
MTC, heat/lot traceability, dimensional and visual inspection; PMI, ultrasonic, liquid-penetrant and pressure-related documentation when specified.
Buyer decision point
A material standard does not define the complete flange. Start with weld neck, blind, slip-on, threaded, socket-weld or a custom drawing, then confirm NPS, pressure class, dimensional standard, facing, bore or matching pipe schedule and bolt drilling. State whether the part must be forged, plate-machined or drawing-specific. Grade selection must also match the connected pipe, gasket, welding procedure and service environment.
Typical applications
- Chemical process and pressure piping
- Marine, offshore and seawater systems
- Desalination and water-treatment equipment
- Heat exchangers, pumps, vessels and corrosion-resistant piping assemblies
How to specify titanium flange types, grades & rfq requirements for quotation
Provide these purchasing details so material availability, manufacturing route, inspection scope and delivery can be reviewed without avoidable follow-up.
- Product form and titanium grade
- Governing standard and revision
- Dimensions, tolerances and quantity
- Surface, edge, end or machining requirements
- Application and service environment
- Inspection, certificate, packaging and destination requirements
Technical selection guides
Frequently asked sourcing questions
Which standard and grade should I specify?
ASTM B381 / ASME SB381 for titanium forgings; flange dimensions may reference ASME B16.5, ASME B16.47 or an approved customer drawing. The final grade, revision and supplementary requirements should be stated on the RFQ or purchase order.
Can size and tolerance be customized?
Weld neck, slip-on, blind, threaded, socket-weld and drawing-specific flanges; NPS, pressure class, facing, bore and drilling are RFQ-controlled. Final dimensional tolerances are confirmed against the governing standard or customer drawing.
What inspection and documentation are available?
MTC, heat/lot traceability, dimensional and visual inspection; PMI, ultrasonic, liquid-penetrant and pressure-related documentation when specified. Supply condition: Production route, surface finish, packaging and delivery documents are confirmed at quotation.
Send the standard, grade, dimensions, quantity, application and certificate requirements.