7.1a KP4x5m
Kelly pipes 4 pieces x 5m length
Friction ex Soilmec RT3-ST (res.pi.)
-outermost pipe OD 355mm x ID 335mm
-2nd outer pipe OD 295mm x ID 275mm
-3rd inner pipe OD 245mm x ID 225mm
-innermost pipe OD 175mm x ID 115mm
7.1a to 7.1c