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This practice covers bolt and stud bolt lengths, quantities, and thread series for pipe to pipe and pipe to valve flanged joints. This specification presents tables of bolting lengths for different steel flanged joints.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This practice covers bolt and stud bolt lengths, quantities, and thread series for pipe to pipe and pipe to valve flanged joints ( ) in the nominal pipe size ranges of 1/2- through 48-in. (12.7- through 1219-mm) diameter and pressure range of 125 through 2500 psi (0.8 through 17 236 kPa).
Note 1: This is applicable when flange of valve has the same thickness as mating flange.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ANSI StandardsB1.1 Unified Screw Threads B16.1 Cast Iron Pipe Flanges and Flanged Fittings (25, 125, 250, and 800 lb) B16.24 Bronze Flanges and Flanged Fittings (150 and 300 lb) B16.5 Steel Pipe Flanges and Flanged Fittings (150, 300, 400, 600, 900, 1500, and 2500 lb Including Reference to Valves) B18.2.1 Square and Hex Bolts and Screws B18.2.2 Square and Hex Nuts
MSS StandardsMSS SP-44 Steel Pipe Flanges
ICS Number Code 21.060.10 (Bolts, screws, studs)
UNSPSC Code 40170000(Pipe piping and pipe fittings)
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ASTM F704-81(2014), Standard Practice for Selecting Bolting Lengths for Piping System Flanged Joints, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top