￭ 不同點 Difference
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附屬書 JIS0202 Appendix |
規格本體 JIS0202 Text |
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螺紋記號 Screw thread abbreviation |
PF |
G |
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標稱範圍 Range of thread size |
PF1/8∼PF12" |
G1/16∼G6" |
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等級 Classes |
外螺紋、內螺紋有A級、B級 Both external & internal thread are divided into classes A & B |
外螺紋有A級、B級，內螺紋沒有等級 Only the external thread is divided into classes A & B |
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標稱1/8∼6"之外螺紋(A級、B級)及母螺紋 (A級)雖有規定外事項，但其容許差和規格本體之規定相同。 The tolerances of the external and internalthreads of PF 1/8∼6" differ from the specifications in the Appendix, but they are the same as those specified in the Text. |
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￭ JIS B0203-1982 管用推拔螺紋 Taper pipe threads
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規格本體之螺紋 (依ISO 7/1) |
推拔外螺紋：R 推拔內螺紋：Rc 平行內螺紋：Rp |
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附屬書之螺紋 |
推拔外螺紋：PT 推拔內螺紋：PT 平行內螺紋：PS |
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Symbol specified in Text(in ISO7/1) |
External taper thread：R Internal taper thread：Rc Internal parallel thread：Rp |
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Symbol specified in Appendix |
Externaltaperthread：PT Internal taper thread：PT Internal parallelthread：PS |