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DTH SF

Steel Fist system for down the hole hammer

Robit® Steel Fist product family is designed for specific piling operations, sizes from 273 mm up to 1220 mm. New economic way for traditional piling work, but also capable for installing water-proof Pipe-Pile-Walls. No ring bit is needed when piling with DTH SF. Usage in homogenous soil conditions with small boulders. Robit® Steel Fist Casing Systems are available for all the common Down The Hole hammers and can be used for all applications where the casing is left in the ground.

Large diameter

[ordercode][type][typelabel][img][360]*Pipe OD [mm]Pipe OD [in.]Pipe Max Wall [mm]Pipe Max Wall [in.]Pilot bit - Wings open [mm]Pilot bit - Wings open [in.]Pilot bit - Wings closed [mm]Pilot bit - Wings closed [in.]*Wings*Hammer
DTH SF 406.4-12.7pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png406,4 1612,7 0.500420,016.535376,014.803310-12"
DTH SF XL 406.4-12.7pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png406,4 1612,7 0.500460,018.110 376,014.803310-12"
DTH SF 508-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png508,02016,00.630522,020.551472,018.583312"
DTH SF XL 508-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png508,02016,00.630562,022.126472,018.583312"
DTH SF 609.6-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png609,6 2416,00.630624,024.567571,022.480318"
DTH SF XL 609.6-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png609,6 2416,00.630664,026.142571,022.480318"
DTH SF 711-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png711,02816,00.630725,028.543671,026.417318"
DTH SF XL 711-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png711,02816,00.630765,030.118671,026.417318"
DTH SF 813-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png813,03223,00.906826,032.520758,029.843318"
DTH SF XL 813-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png813,03223,00.906867,034.134758,029.843318"
DTH SF 914-20pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png914,03620,00.787927,036.496864,034.016424-30"
DTH SF XL 914-20pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png914,03620,00.787968,038.110864,034.016424-30"
DTH SF 1016-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png1016,04016,00.6301030,040.551973,038.307524-33"
DTH SF XL 1016-16pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png1016,04016,00.6301070,042.126973,038.307524-33"
DTH SF 1220-20pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png1220,04820,00.7871234,048.5831135,044.685630-33"
DTH SF XL 1220-20pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png1220,04820,00.7871274,050.1571135,044.685630-33"

Small diameter

[ordercode][type][typelabel][img][360]*Pipe OD [mm]Pipe OD [in.]Pipe Max Wall [mm]Pipe Max Wall [in.]Pilot bit - Wings open [mm]Pilot bit - Wings open [in.]Pilot bit - Wings closed [mm]Pilot bit - Wings closed [in.]*Wings*Hammer
DTH SF 273-12.7pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png273,010 ¾12,7 0.500287,011.299245,09.64638"
DTH SF 323.9-12.7pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png323,912 ¾12,7 0.500338,013.307294,5 11.59438"
DTH SF XL2 323.9-12.7pilotPilot, Down the Hole Hammer, Steel Fist/wp-content/uploads/2017/07/DTH-SF-rajaytetty-kaavio.png323,912 ¾12,7 0.500374,014.724294,5 11.59438"

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