Shandong Huajian franchise railway equipment, rail hollow drill, simple, fair prices, new and old customers to favor pro-15263722267 50mm thick steel plate can perform high-accuracy, high-speed perforation holes can be played overlapping edge portion used three combination blade structure, pitch ranging segmentation and other special carbide blade is machinable crystalline iron plate UNIKA unique technology, steel (HB200 below), stainless steel plate. Suitable Motor: magnetic drill / drill / lathe / milling effective length: 50mm (MCMAX50) / 35mm (MCMAX35) 3 枚 edge by a combination of a number of the outer edge, the edge, the inner edge components. Each blade in the cutting process, the work load is only about 1/3, together with the inner side of each blade also has a cutting knife. So, you can make a very smooth chip evacuation. In addition, as a part of each of the cutting edges are characteristics of the burden of work, so that the hole drilled is extremely difficult to produce chipping. 1, rail hole drilling (air-core) into high-speed steel drill bit series and carbide series, with rail drilling machine supporting the use of the railway works, maintenance and repair of electrical service systems necessary drilling tool, which features: multiple cutting edges, wear resistance, high precision drilling, drilling efficiency is higher than ordinary twist. Series of high-speed steel drill: a drill at one time on the hardest material rail drilling holes 40-50, and after a bit worn continuously grinding a dozen times; higher prices. Carbide Series rail drill, drill bit made of high strength welded carbide blade, long boring life, should not wear blades, drill bits, etc. should not be broken, and after grinding can also be worn several times, the price is reasonable. 2, the Division distribution of various hollow drill hole for railroad rail drilling and various types of processing, the country of our products include: the United States, Japan, Britain, France, Taiwan, Germany, Italy and other brands, specifications and reasonable price good service, welcome to inquire. 3. The Distribution Division France Geismar rail drill bit is suitable for the material and efficient rail railroad rails twist drill, good quality, low wear, no easily broken concerns for rail drilling, drilling standards for multiple sewing mill specifications: Diameter 32,31MM for Geismar rail grinding machine.