Boring special plate material for the process of high-strength cast iron machining HT200-300 boring holes, face hardness HB170-240, after two manual processing (annealing 600 degrees -700 degrees artificial and natural aging 2-3 years) so that the product accuracy and stability, good wear resistance. Henderson dedicated tablet precision boring: Boring dedicated tablet according to the national standard verification procedures, namely, 0,1,2,3, fine planing five grades. Process for machining deep hole boring machining deep hole boring process characteristics there are many commonly used drilling, reaming, boring, reaming, etc. Boring processing length dimension, in the actual processing of large CNC boring machine processing, these processes have their own process characteristics. Henderson Zhengzhou Mining Machinery Co., Ltd., located in Zhengzhou City, West Fourth Ring Road West, location and convenient transportation. Is a boring process, vertical lathe, planer milling machine as one of the external processing center, is the Henan Province boring machining, vertical lathe, planer milling machine largest foreign processing enterprises. Boring boring machining processing length dimension _ _ boring processing companies by Henderson Henderson Mine Machinery Co., Ltd., Zhengzhou. Henderson Zhengzhou Mining Machinery Co., Ltd. (www.zzhjks.com) strong, credible, in Zhengzhou machining industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhengzhou Henderson mine and you hand into the brilliant, for a better future!