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1.1 This practice describes a procedure for making capillary joints by soldering of copper and copper alloy tube and fittings.
1.2 This procedure is applicable to pressurized systems such as plumbing, heating, air conditioning, refrigeration, mechanical, fire sprinkler, and other similar systems. ASME B31.5 and B31.9 reference the techniques employed for satisfactory joint preparation. It is also used in the assembly of non-pressurized systems such as drainage, waste and vent.
1.3 It is not applicable to the assembly of electrical or electronic systems.
1.4 Manufacturers should supply variations and additional specific detailed instructions for their particular products, if and when necessary.
1.5 Tube and fittings are manufactured within certain tolerances to provide for the small variations in dimensions associated with manufacturing practice. Applicable specifications are listed in the appendix.
1.6 A variety of solders are available that will produce sound, leak-tight joints. Choice of solder will depend upon the type of application and on local codes. For potable water systems, only lead-free solders shall be used, some of which are described in Specification B32.
1.7 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information purposes only.
1.8 This standard does not purport to address all of the safety problems, 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. For hazard statements see Notes 1, 2, and 3.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
B32 Specification for Solder Metal
B68 Specification for Seamless Copper Tube, Bright Annealed
B68M Specification for Seamless Copper Tube, Bright Annealed (Metric)
B75 Specification for Seamless Copper Tube
B75M Specification for Seamless Copper Tube (Metric)
B88 Specification for Seamless Copper Water Tube
B88M Specification for Seamless Copper Water Tube (Metric)
B280 Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service
B306 Specification for Copper Drainage Tube (DWV)
B447 Specification for Welded Copper Tube
B640 Specification for Welded Copper Tube for Air Conditioning and Refrigeration Service
B641 Specification for Seamless and Welded Copper Distribution Tube (Type D)
B716 Specification for Welded Copper Water Tube
B716M Specification for Welded Copper Water Tube (Metric)
B813 Specification for Liquid and Paste Fluxes for Soldering of Copper and Copper Alloy Tube
B846 Terminology for Copper and Copper Alloys
Other DocumentsANSI/ASC Z49.1 Safety in Welding and Cutting Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
ICS Number Code 23.040.15 (Non-ferrous metal pipes)
UNSPSC Code 40170000(Pipe piping and pipe fittings); 73181908(Soldering services)
ASTM B828-00, Standard Practice for Making Capillary Joints by Soldering of Copper and Copper Alloy Tube and Fittings, ASTM International, West Conshohocken, PA, 2000, www.astm.orgBack to Top