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Titanium Blind Flange

Standard: ANSI B16.5, ASTM B16.5, ASME B16.47, JIS B2220, DIN2627-2628, AWWA, ASTM A182 AND ASME SA182, GOST 33259-2015 etc.

Pressure Class: Class 150 / 300 / 600 / PN10 / PN16 / PN25

Material: Gr.1, Gr.2, Gr.5, Gr.7

Surface Type: RF (convex) mainly, can also provide FF, RTJ

Technique: Forged and CNC Machined

Product Description

Titanium Blind Flanges, also known as blank flanges, are solid, round flanges without a bore, used to seal off the ends of pipes, valves, or equipment nozzles. These flanges are ideal for applications where pipe systems need to be isolated, pressure tested, or reserved for future extension.

Manufactured according to ASTM B381, titanium blind flanges are most commonly made from commercially pure titanium (Grade 2) or corrosion-resistant titanium alloys such as Gr7 and Gr12. They offer exceptional resistance to seawater, acid, alkali, and chloride corrosion, and are ideal for harsh chemical and marine environments.

Product specifications

Material Grade	Gr.1, Gr.2, Gr.5, Gr.7
Standard	ANSI B16.5, ASTM B16.5, ASME B16.47, JIS B2220, DIN2627-2628, AWWA, ASTM A182 AND ASME SA182, GOST 12820 / 12821-80, etc.
Size	1/2"-60"NB NPS 1/2-NPS 24 (DN 10 - 2000)
Pressure Class	PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, PN160, PN250, PN320, PN400 150#, 250#, 300#, 400#, 500#, 600#, 900#, 1500#, 2500#
Flange Face Types / Connection Type	Flat Face Flange (FF), Raised Face Flange (RF), Ring Joint Flange (RTJ)
Product specifications can be customized according to customer drawing.

Common Inspection Items for Titanium Flanges

Visual Inspection	To check for surface defects such as cracks, dents, scratches, and deformations.
Dimensional Inspection	Verify outer diameter, thickness, bolt circle diameter, sealing surface dimensions, etc.
Chemical Composition Analysis	Performed by spectrometer or ICP to ensure the titanium grade (e.g., Gr.2, Gr.5) complies with standards.
Mechanical Properties Testing	Includes tensile strength, yield strength, elongation, etc., according to ASTM B381 or relevant standards.
Non-Destructive Testing (NDT)	Typically includes Ultrasonic Testing (UT) or Dye Penetrant Testing (PT) to detect internal or surface flaws.
Pressure Testing (Hydrostatic Test)	For pressure applications, hydrostatic testing may be conducted to verify strength and sealing performance.
Sealing Surface Flatness Check	Checks the smoothness and flatness of the sealing face (e.g., RF, FF) to ensure tight sealing.
Hardness Testing	Brinell or Vickers hardness testing to assess material condition or heat treatment if required.

Additional Notes

Tests are based on standards such as ASTM B381, ASME B16.5, GB/T 9119, EN 1092-1, etc.

Third-party inspection reports (SGS, TUV, BV) can be provided upon request.

For exports, common quality documents include:
✔ Dimension Inspection Report
✔ Material Test Certificate (MTC)
✔ NDT Report
✔ Packing Inspection

Packing:

Packed in strong seaworthy plywood cases with proper labeling. Each flange is individually protected with plastic wrap or foam.Customized packaging and pallet available upon request.