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Brief： Power Pack YYTZ28-3/4
YYTZ28-3/4 power pack:About 750 kg weight, power consumption about 32 degrees per hour. And the Yunnan Tin Group used this model for the main tunnel boring, has been complete the tunnel up to 3 kilometers during one year and the best tunneling rate of progress reached 330.4m in one month.
http://www.dsrockdrill.com。 |
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