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ASTM B88-2020 pdf free download

ASTM B88-2020 pdf free download.Standard Specification for Seamless Copper Water Tube
1. Scope
1.1 This specification establishes the requirements for seam- less copper water tube suitable for general plumbing, similar applications for the conveyance of fluids, and commonly used with solder, flared, or compression-type fittings. The type of copper water tube suitable for any particular application is determined by the internal or external fluid pressure, by the installation and service conditions, and by local requirements. Means of joining or bending are also factors which affect the selection of the type of tube to be used. 2 N OTE 1—Annealed tube is suitable for use with flared or compression fittings, and with solder-type fittings, provided rounding and sizing of the tube ends is performed where needed. N OTE 2—Drawn temper tube is suitable for use with solder-type fittings. Types K and L tube, in the drawn temper, are suitable for use with certain types and sizes of compression fittings. N OTE 3—Fittings used for soldered or brazed connections in plumbing systems are described in ASME B16.18 and ASME B16.22. 1.2 The tube shall be produced from the following coppers, and the manufacturer has the option to supply any one ofthem, unless otherwise specified.1.3 The assembly of copper plumbing or fire sprinkler systems by soldering is described in Practice B828. 1.4 Solders for joining copper potable water or fire sprinkler systems are covered by Specification B32. The requirements for acceptable fluxes for these systems are covered by Speci- fication B813. 1.5 Units—The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard. 1.5.1 This specification is the companion specification to SI Specification B88M; therefore, no SI equivalents are shown in this specification. 1.6 The following safety hazards caveat pertains only to the test methods portion, Section 16, of this specification: This standard does not purport to address all ofthe safety concerns, ifany, associated with its use. It is the responsibility ofthe user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
10.2 Flattening Test: 10.2.1 When specified in the contract or purchase order, the flattening test in accordance with Test Method B968/B968M shall be performed. As an alternative to the expansion test for tube standard sizes 4 in. and over in the annealed condition, a section 4 in. in length shall be cut from the end of one of the lengths for a flattening test. This 4 in. test specimen shall be flattened so that a gage set at three times the wall thickness will pass over the tube freely throughout the flattened part. The tube so tested shall develop no cracks or flaws visible to the unaided eye as a result of this test. In making the flattening test the elements shall be slowly flattened by one stroke of the press. During inspection, the flattened areas of the test specimen shall be free ofdefects, but blemishes ofa nature that do not interfere with the intended application are acceptable. 10.3 Microscopical Examination for Susceptibility to Hy- drogen Embrittlement: 10.3.1 Tubes furnished in Copper UNS No. C12000 shall be essentially free ofcuprous oxide as determined by Procedure A of Test Methods B577. When Copper UNS No. C12200 is supplied, examination is not required. In case of a dispute, Procedure C ofTest Methods B577 shall be used as the referee method.

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