1>Competitive price and high quality 2>Stocks adequate&timely delivery 3>30 ... )180~60Applicable FormationsSoft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft ... less than 15 days.3.Can I expect a quality products? Answer : Yes. All our activities are ... ”),609.6mm(24”)660.4mm(26”)Available models: Steel tooth(IADC)111, 121,131117,124,126,127,136, ...