Blind Flanges

Blind Flanges do not have a bore and are used to shut off a piping system or vessel opening. Its design permits easy access to vessel or piping system for inspection purposes. It can be supplied with or without hubs at the manufacturer’s option. In terms of internal pressure and bolt loading, blind flanges, especially in the larger sizes, are the most highly stressed flange types.

Blind Flange

Dimensions

B16.5 / B16.47
½” – 36″
150# – 2500#
Series A & Series B

Primary Alloys Inventoried

Hastelloy – C276, B3, C22, C-2000, G-30, 230
Alloy 20, 200/201, 400, 600, 601, 625, 800HT, 825
AL6XN (N08367), 904L, 310, 317L, 321, 347
Duplex Stainless – 2205, 2507, 255
Titanium – Grades 2, 7, and 12
Aluminum Grades – 1100, 3003, 6061 and 5083
Chromes-Moly – F-5, F-9, F-11 and F-22

Other material available upon request

Compliance and Certifications

ISO 9001:2015, PED 2014/68/EU, Canadian Registration Numbers (CRN’s: Nuclear and Non-Nuclear), AIS, NCA3800, 10CFR50, 10CFR21, CSA N285.0, CSA B51, NQA-1, EB2678, MIL-I-45208A, DFARS, NACE, EN 10204 3.1

Blind

Blind Flanges

Dimensions

Primary Alloys Inventoried

Compliance and Certifications

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