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Model

Outer diameter of heel tube  mm

Inner diameter of heel tube  mm

Reaming size  mm

Minimum diameter of inner hole of tube shoe mm

Maximum diameter of drill bit that can pass through mm

With impactor

ZRPG146

146

126-132

154

117

117

ZRC4 series

ZRPG168

168

148-155

184

140

140

ZRC5 series

ZRPG178

178

158-165

194

148

148

ZRC5 series

ZRPG183

183

163-170

198

156

156

ZRC5 series

ZRPG219

219

199-206

231

188

188

ZRC6 series

ZRPG273

273

251-257

300

241

240

ZRC8 series

Characteristics of ZRPG series pipe drilling tools

For the development of the ground-source water well market, it is efficient, stable, low-cost, strong in rock adaptability, and high in accuracy, saving a lot of costs for customers.