ASTM F681-82(2022)

Standard Practice for Use of Branch Connections

ABSTRACT
This practice lists commonly used types of branch connections for carbon steel, chromium-molybdenum steel pipe and copper-nickel alloy tubing. The branch to run size applications are presented in details. The weld joint designs, fabricated branch connections and threaded fittings shall meet the requirements prescribed.
SCOPE
1.1 This practice lists commonly used types of branch connections for carbon steel, chromium-molybdenum steel pipe and copper-nickel alloy tubing. Branch to run size applications are given in Table 1, Table 2, and Table 3. Other types of branch connections (Fig. 1) may be used provided they comply with the requirements of Title 46 CFR Subparts 56.07-10(f) and 56.70-15(g) of the USCG Regulations.    
FIG. 1 Illustrative Legend for Branch Connections  
1.2 The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Sep-2022
• ICS: 47.020.60 - Electrical equipment of ships and of marine structures
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.11 - Machinery and Piping Systems

Relations

• Refers: ASTM F722-82(2014) - Standard Specification for Welded Joints for Shipboard Piping Systems
• Effective Date: 01-Nov-2014
• Refers: ASTM F722-82(2008) - Standard Specification for Welded Joints for Shipboard Piping Systems
• Effective Date: 01-Nov-2008
• Refers: ASTM F722-82(2004) - Standard Specification for Welded Joints for Shipboard Piping Systems
• Effective Date: 01-Nov-2004
• Refers: ASTM F722-82(1998) - Standard Specification for Welded Joints for Shipboard Piping Systems
• Effective Date: 01-Jan-1993

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F681 − 82 (Reapproved 2022) An American National Standard
Standard Practice for
Use of Branch Connections
ThisstandardisissuedunderthefixeddesignationF681;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope F722 Specification for Welded Joints for Shipboard Piping
Systems
1.1 This practice lists commonly used types of branch
connections for carbon steel, chromium-molybdenum steel 2.2 ASME Standard:
pipe and copper-nickel alloy tubing. Branch to run size
B31.1 Power Piping
applications are given in Table 1, Table 2, and Table 3. Other 4
2.3 Other Document:
typesofbranchconnections(Fig.1)maybeusedprovidedthey
Title 46 Code of Federal Regulations (CFR) Shipping, Parts
comply with the requirements of Title 46 CFR Subparts
41 to 69
56.07-10(f) and 56.70-15(g) of the USCG Regulations.
1.2 The values stated in inch-pound units are to be regarded
3. General Requirements
as standard. No other units of measurement are included in this
3.1 Weld joint designs shall be in accordance with Specifi-
standard.
cation F722 and the limitations therein.
1.3 This international standard was developed in accor-
3.2 Fabricated branch connections shall meet the reinforce-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the ment requirements of Section 104.3 of ASME B31.1 as
modified by Title 46, CFR Subparts 56.07-10(f) and 56.70-
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical 15(g) of the USCG regulations.
Barriers to Trade (TBT) Committee.
3.3 Threaded fittings shall be subject to the limitations of
Title 46 CFR, Subpart 56.30-20 of the USCG Regulations.
2. Referenced Documents
2.1 ASTM Standards:
4. Keywords
4.1 branch connnections; carbon steel connections;
This practice is under the jurisdiction of ASTM Committee F25 on Ships and
chromium-molybdenum steel pipe; copper-nickel alloy tubing
Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
Current edition approved Oct. 1, 2022. Published October 2022. Originally
approved in 1980. Last previous edition approved in 2018 as F681 – 82 (2018).
DOI: 10.1520/F0681-82R22. Available from American Society of Mechanical Engineers (ASME), ASME
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