工具接头尺寸、扣型转换及上扣扭矩
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ROTARY SHOULDER CONNECTION INTERCHANGE LIST
* Connections with two thread forms shown may be machined with either thread form without affecting gaging or interchange ability.
** Numbered connections (NC) may be machined only with the V-0.038 radius thread form.
Data reprinted from table 2.14, P.23. 14ED., API RP7G, August 1,1990.
REC. MAX. & MIN. TOOL JOINT DIMENSION
LARGER DIAMETER TOOLS JIONTS DIMENSION AND STRENGTH DATA (API & NON-API)