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Flanges, gaskets and stud bolts used for flanged connections in piping systems (types of flanges/gaskets, specifications, dimensions and materials per ASME)

Flange Isolation Kit for Cathodic Protection

A flange isolation kit protects a flanged joint from the corrosion from static currents (by preventing a metal-to-metal contact among flanges, stud bolts, and gaskets). A flange insulation kit consists of one washer for each nut, one full-length insulating sleeve for each bolt, a gasket (type F, E, D, O), and thick plated steel washers for… read more »

Steel Nuts for Stud Bolts (ASTM A194)

Hexagonal steel nuts for stud bolts charts: dimensions (nuts width and thickness), weight (in kilograms and pounds), material specifications ASTM A194 and metric grades. STEEL NUTS SIZES Nuts width and thickness   HEAVY HEX NUTS DIAMETER (inches) Width Across Flats Width Across Corners F C Basic Max Min Max Min 1/2 7/8 0.875 0.850 1.010 0.969… read more »

Flange Gaskets Types (Soft, Spiral, Ring Joint)

Learn about the 5 key flange gaskets types (used in the oil and gas industry): non-asbestos gaskets full and raised face (used for low-pressure, low-temperature and non-critical applications), spiral wound gaskets (for higher temperature and pressure oil and gas applications), Ring joint gaskets style R, RX, BX (for RTJ flange faces), Kammprofile and Jacketed gaskets. The article… read more »

How to Select the Right Flange Gasket?

How to select the right gasket for a piping application? To choose the proper flange gasket, piping engineers should take into consideration the following 4 key factors: fluid type, process temperature/pressure, fugitive emissions Laws, other general considerations. While gaskets are relatively cheap components of the overall piping system, they are critical for its reliability and integrity:… read more »

Threaded Flange Dimensions EN 1092 (PN 6/16)

Dimensions and weights charts of PN 6, 16 threaded flanges EN 1092-1 Type 13, with weights and stud bolt requirements. THREADED FLANGE DIMENSIONS (EN 1092-1 TYPE 13) PN 6 PN 6 threaded flange dimensions (EN 1092-1 type 13) with stud metric bolts and nuts requirements Sizes in millimeters Flange DN  Flange Neck Raised face Screws… read more »

Socket Weld Flange Dimensions (ASME B16.5)

The charts show the dimensions of socket weld flange class 150, 300, 400, 900, 1500, 2500 in inches and in millimeters. SOCKET WELD FLANGE DIMENSIONS IN INCHES SOCKET WELD CLASS 150 (IN INCH) Dimensions of socket weld flange class 150 (in inches) NPS ID OD Bolt Circle (BC) Raised Face (R) Raised Face (RF) H D ID 2*… read more »

ASME B16.47 Flanges Dimensions and Weights

The charts show the dimensions of ASME B16.47 large size flanges class 150, 300, 400, 600, 900 (from 26 to 60 inches in diameter). ASME B16.47 SERIES A FLANGE DIMENSIONS CLASS 150 Dimensions of ASME B16.47-A flanges class 150 All ASME B16.47 flanges diemesions are in inches Flange NPS Outside Diam. Minimum Thickness O.D. of… read more »

Spectacle Blind, Flange Spade, Ring Spacer (ASME B16.48)

Spectacle blind, flange spade, and ring spacer are forged products used to blind pipelines (temporarily or permanently). These devices are cost-effective alternatives to isolation valves. A spectacle blind combines, in one single product, a flange spade and a ring spacer. Flange spades and ring spacers, as separate products, are used when the rotation of a spectacle… read more »

Orifice Flange Explained (ASME B16.36)

An Orifice Flange is used in combination with orifice meters to measure the flow rate of oil, gas and other liquids conveyed by the pipeline. Orifice flanges are manufactured to ASME B16.36 in multiple sizes and, material grades.  WHAT IS AN ORIFICE FLANGE? An orifice flange is used to measure the flow of the fluid conveyed… read more »