成人午夜做爰高潮片免费吸气女生高潮多爽|美女高潮迭起|免费日本av在线观看|日本人妻有码在线|孕妇肚形状看男女准确吗|日本熟妇人妻hd|使劲快高潮了对白av|在线视频人妻中文字幕|日本av在线看片|欧美高潮爽到抽搐在线,欧美日一区二区在线观看,www美女黄片av,熟妇老太晚色

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

Special features 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.