![]() NACE MR0175& MR0103 references maximum hardness in determining steel’s suitability for use in H2S Service. API 6A specifies minimum Brinell Hardness requirements. To Break apart to disconnect flanged or screwed Connectors.Ī measure of steel hardness, measured by pressing a tungsten carbide tool against a surface using a designated force, producing an impression which is measured and then given a special numerical value which relates to steel tensile strength. The rotational force applied to nuts onto stud bolts required to tighten and apply tension to the bolts in order to hold flanges or other connections. ![]() The energy resulting from applying Torque to nuts onto bolts/studs providing the required compressive force to hold connections in contact under pressure or load. The dimension of a theoretical circle through the center point of a series of holes, drilled equally spaced, near the mid circumference of a flange. Click here for our Stocklist.Ībbreviation for Brinell Hardness Number. ![]() (Global Supply Line stocks A193 GRADE B7, B7M, L7 and L7M UNC (8UN) studs and nuts up to 2 ½”). B7M is B7 Modified with controlled hardness (charpies tested) in the bolt (and 2HM nut) for sour service (NACE) exposed bolts. 08% maximum.ĪSTM specification for bolting, A193 Grade B7, specified in API Spec 6A for standard service flange bolting. The organisation providing a vast array of specifications for test standards, methodology and materials.ģ00 series stainless steel (example 316, 304, 321) with a chemical composition of chromium 16% minimum, nickel, 8% minimum, and carbon. The American Petroleum Institute specification used for Subsea Wellhead and Christmas Tree Equipment.Īmerican Society for Testing and Materials. Qualified licensed manufacturers are authorised to use the API Monogram and their license number, on their documentation and on product labels to signify equipment meets the requirements of API specifications. The registered trademark of the American Petroleum Institute (API). (Also ISO 10423) The American Petroleum Institute publication specification utilised as the oil industry Specification for Wellheads and Christmas Tree Equipment. (Also ISO 13533) American Petroleum Institute publication specification used as the industry Specification for Drilling Equipment. ![]() The organisation that develops and publishes API specifications. Refers to the space between the inside diameter of a cased or drilled hole and a secondary string of casing suspended inside this space.Īmerican Petroleum Institute. (Global Supply Line keeps large stocks of ANSI valves, flanges & fittings). This organisation sets standards for ASME:- ANSI B16.5, Weld Neck, Blind and Screwed Flanges commonly used in refineries and process industries. (Formerly known by the name American Standards Association) (ASA). Can often be used instead of a Double Studded Adaptor because at least one of the components to which it connects has a studded flange connection.Īmerican National Standards Institute. Two types are available:-ĭouble Studded Adaptor (DSA), or a Single Studded Adaptor (SSA).Ī pressure control housing body with two different end connections to fit between two other pieces of equipment. Glossary of Oilfield Terms and Definitions for Oilfield Terminology Adaptor FlangeĪn intermating flange that connects between two other flanges that are different connection types from each other. ![]()
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