Taper pipe threads
This Standard specifies taper pipe threads and is applicable to the threads used mainly for pressure-tight joints on the threads for jointing the pipes, pipe fittings, fluid machinery, etc.
The taper pipe thread of PT 3-1/ 2 and PT 7 to PT 12 in thread designation and the parallel pipe thread of PS 3-1/ 2 and PS 7 to PS 12 shall be as specified in Annex (normative).
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