Tungsten Carbide Rock Drill Bits Drilling Carbide Tools for Coal Mining

                                          Tungsten Carbide Rock Drill Bits Drilling Carbide Tools for Coal MiningGrand Sea Tungsten Carbide tools for Mining and construction have high wear resistance and impact toughness. It has a variety of full-size tooth shapes, including spherical, tapered, elastic, wedge , side wedge, flat head, saw teeth, coal cutting teeth, bit center, etc. Grand Sea adopt foreign grinding technology, the precision of cylindrical grinding and surface grinding is leading domestically We can supply three states: rough, rough grinding and fine grinding. Grand Sea Tungsten Carbide tools for Mining and construction exported large to Korea Japense, South Africa, USA...market. Popular Grade for mining tool:     GradeWC%CO%Grain size    (um)Density(g/cm³)±0.1Hardness(HRA)±0.5TRS(kgf/mm²)HE109461.614.9590.4>300HE159462.014.9589.6>280HE169464.014.9588.2>270HE209284.014.7587.8>270HE309194.014.6587.5>260HE3589114.014.4086.8>250HE3688122.014.3087.0>280HE4087134.014.2085.5>240HE5085154.014.0585.0>230HAC39464.014.9588.3>240TC0291.58.56.014.6586.4>240/* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1