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The top of Drill Pipe Circulating Swage connects to the hoses,the bottom connects to the Drill Pipe.
Main body is made from AISI4145H alloy steel.
 |  |
| Product No.DCS-01 |
| Size (in) | Body OD Size(mm) | ID size (mm) | Top box conn | Bottom Pin Conn | Length (mm) | W.P. psi |
| 2⅞" | 105 | 50.8 | 2" FIG1502F | 2⅞"IF（NC31） | 305 | 10000 |
| 3½" | 121 | 50.8 | 2" FIG1502F | 3½"IF（NC38） | ||
| 4" | 146 | 50.8 | 2" FIG1502F | 3½"IF（NC38） | ||
| 4½" | 158 | 50.8 | 2" FIG1502F | 4"IF（NC46） | ||
| 5" | 158 | 50.8 | 2" FIG1502F | 4½"IF（NC50） | ||
| 5½" | 185 | 50.8 | 2" FIG1502F | FH5½ |
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