Drilling Tools

φ420 mm rock reamer（multi-diameter ，customized reamers）

HDD reamer bit are designed for the enlargement of pilot holes and large hole applications. They are also used for road and river crossing application.

We produce rock hole tools suitable for various formations, soft rocks like limestone and sandstone, hard rocks like granite and basalt, etc. Choosing the right tooth palm can increase the drilling speed and service life. The size of the spray hole can be designed according to the aperture of the reamer in construction.

As per clients requirement of force and the size of the drill rod, we can customize 3 cones, 4 cones 5 cones or multiple cones of rock reamer. The thread type are API. IF. FH etc.

Technical Parameter

Scope of application
537	Low compressive strength, medium soft, with harder abrasive interlayers, such as hard shale, hard gypsum, soft limestone, sand layer, dolomite with interlayers, etc.
617	Medium hardness formations with high compressive strength, such as hard shale, limestone, dolomite, sandstone, etc.
637	High compressive strength, medium hard and hard highly abrasive formations such as limestone, dolomite, sandstone, flint, etc.
Buckle Type
	φ83（D80）	φ114(NC46)	φ168( 6 5/8FH)	φ89(NC31)	φ127(NC50)	φ194(DS70)	φ102(NC38)	φ(140 5 1/2FH)