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Specification: O.D.Casing Dia(108mm-319mm)Outstanding advantage: Simply structure,simple operation, reliable quality,retriveable drilling tools. long service life.
Design priciples: Make the casing follow easy and the equipment and operation simply.
Applicaion range: Drilling water wells / geothermal wells / short mircopiles /
medium mini-tpye grouting hole of building / dam / harbout project......
