Diamond Core Drill, 5"/127mm Diameter Core Drill Bit, 14"/355mm Concrete, 5/8"-11 Thread Core Drill Bit

  Product DescriptionWide Application --Diamond drill bit are worked great for dry drilling holes through Granite Marble Hard Stone Reinforced Concrete Brick Block Counter Top,Using water could prolong the lifetimeSuper Quality Raw Material --Using laser welded technology,improve the performance of segments,avoid segments off during drilling process.The vacuum brazing protective layer on the surface of the core steel offers clean cut & steel core protectionFast and Smooth Drilling --Creates a fast and stable drilling, you could drill smoothly with no broken edgesMachine --angle grinder (Pay Attention! If you drill through thick granite ,we recommend you to add enough water to help cooling the bits,which could prolong the lifetime) TESTING REPORTConcrete Hardness: C40  ,Core bit diameter:   63mm   GRADENormal QualityGood QualityHigher QualityTop QualityMinute /Hole4.20 4.30 3.50 4.20 Steel bar time40 seconds48 seconds38 seconds48 secondsSteel bar diameter18mm18mm18mm18mmSteel bar Quantity4444concrete thickness250mm250mm250mm250mmdrilling holes5555total segment height10mm11mm11mm11mm left of segment height7.5mm9mm9.5mm10mm     Company ProfileHebei Halemu Import and Export Trading Ltd  We are a leading diamond tools integration of industry and trade firm in China that began our diamond tools business from 2007. Formed by a group of experienced engineers that have invented over 200 different formulas for different materials and worked on over 60 projects.  We bring together top experts to drive your business growth. We specialize in providing solutions for those diamond tools distributors, importers or even end users we always pay same attention on them. With these, we give your business the ultimate tools for to enhance performance, streamline processes, standardize procedures and improve efficiency.  By working with your business development manager on a one-one basis, we guarantee excellent service good quality products and lead time. We believe in empowering you by providing you most appropriate products for different needs.    Packaging & Shipping Payment Term1) Accepting T/T, L/C, and other payment request can be discussed.2) 100% T/T advanced for order amount less than USD10,000.3) 30% deposit, remain balance should be paid 3 days before shipmentfor order amount more than USD 10,000.4) Normally deliver within 7 days after payment, large quantity ordershould be discussed.5) Less than 45KG, we recommend sent by express - EMS, DHL, TNT, FedEx,Ups. More than 45KG, we recommend sent by air or sea.Our Advantages1) No Any MOQ Limited2) Accept OEM.3) Good After Sale Services:Our experienced expert will give technical recommendation according our clients' product line, Modifying the machine parameters, such as sequence, speed, etc. to acheive the best performance. We also can send after sale expert to clients' product line and optimize the product line. CertificationsFAQ1.Are you a manufacturer or trading company? We are a 10 years manufacturer.2.How to prove your quality? We use E6 diamond,Dipea steel wire, passed ISO9001 and SGS,strict quality control and skilled workers.3.What should I do if the products is not suitable for the market? Giving us the detailed report first,then we analyze the reason,try to find the solutions. If it is our problems,we will give you new products.4.Do you provide free samples? Small sample is welcomed.But,usually we don't provide free samples.5.Can you provide OEM/OEM services?    Yes, if you need./* 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