长沙黑金刚实业有限公司成立于1999年4月30日，是中国专业从事凿岩机械和风动工具研究与制造的著名民营企业。公司有丰富的科研和生产经验，采用最优质的原材料，通过先进的生产工艺和严密的检测手段，生产出性能优良、质量过硬的产品。“黑金刚”牌钻具由于质量稳定、性能优良而畅销全国，并批量出口到美国、法国、澳大利亚、加拿大、巴西、南非、马来西亚、韩国等30多个国家，深受用户好评。
       公司位于雷锋故乡—湖南望城，占地64000平方米，生产厂房45000平方米，员工450多人，有生产凿岩机械与风动工具的全套设备。自行设计和制造如下产品：中国最先进的高风压潜孔冲击器；各种潜孔钻头；在覆盖岩层和松散岩层中用于跟管钻进同心和偏心钻具；各种螺纹钻头；RC反循环冲击器及钻头、钎尾和联接套；各种联接头、钻管和凿岩机械配件等。这些产品广泛用于土石方工程、矿山开采、石油钻井、水井和桩基工程。
       展望未来，我们充满信心。我们的愿望是：黑金刚，喜洋洋；黑金刚，寿命长！“黑金刚，喜洋洋”就是：未来我们黑金刚要提供更多的就业机会，贡献更多的税收，让地方政府和当地居民感到高兴；未来我们黑金刚一定要与世界著名钻具品牌一争高低，让中国钻具行业因为拥有黑金刚钻具而自豪；未来我们黑金刚一定要提供精美绝伦的产品，让国内外客户看着黑金刚的产品感到开心，用着黑金刚的产品感到放心；未来我们要与供应商和协作单位共同进步，共同发展，共同拥有美好的明天，未来我们黑金刚要像学校和军队一样，成为一个爱学习、守纪律，拥有坚强战斗力的集体，成为一个快乐的大家庭，让所有员工在这个大家庭里感到幸福安康；我们要让关心支持黑金刚的所有朋友，每当谈起黑金刚的时候都喜气洋洋！“黑金刚，寿命长”就是要使黑金刚的产品具有最长的寿命，让用户获得最好的效益；就是要让黑金刚与所有朋友的友谊地久天长；就是要让黑金刚成为百年老店，让黑金刚精神世代相传！

Founded on April 30, 1999, Changsha Heijingang Industrial Co., Ltd is a famous privately operated enterprise specialized in researching and manufacturing rock drilling equipments and pneumatic tools. The company has rich scientific research and production experience. It produces high quality rock drilling products by using high quality raw material, utilizing advanced craft technology and imposing strict quality inspection. The products made by HJG are being sold well all over China and exported to more than 20 countries like America, France, Australia, Canada, Brazil, ?South Africa, Malaysian, South Korea and so on.
         Changsha Heijingang is located in Leifeng’s hometown Wangcheng, Hunan, with land area of 64000 m2 and workshop space of 45000 m2. Currently we have more than 450 employees and we are equipped with wide rang of advanced equipment required for manufacturing rock drilling machine and pneumatic tools. We have designed and manufactured the following products: the most advanced high air pressure DTH hammer in China, various kinds of DTH bits, eccentric drilling equipments for simultaneous drilling and casing through overburden and loose rock formations; various kinds of threaded drilling bits, reverse circulation hammers and bits, shank adapters and coupling sleeves, all kinds of tool joints and drill pipes and spare parts for drill rig. All our products are widely used in engineering, mining, oil drilling, water wells, pile foundation etc.
          Looking into the future, we are full of confidence. Our wish is to achieve the goal of “HJG, a cheerful life; HJG, a longer life”! “HJG, a cheerful life” means that: In the future, we HJG will offer more job opportunities and contribute more taxes, with which local government and local residents will be delighted; in the future, we HJG will be sure to compete with famous international brands of drilling tools so that China Drill Steel Association will be proud of HJG; in the future, we HJG is bound to offer superb products so that customers both from home and abroad feel happy at sight of our products and relieved when using them; in the future, we HJG will develop and step foreword together with our suppliers and cooperating units to have a bright tomorrow; in the future, we HJG will be just like a school and army to become a group loving study, observing discipline and boasting strong fighting capacity, and a happy family; in this family, all employees enjoy happiness and good health; every time all friends caring and supporting HJG talk about HJG, they are happy! “HJG, a long life” means that HJG products will have the longest service life so that users can achieve the best benefit; the friendship between HJG and all the friends will be ever lasting and unchanging; HJG will last for hundred years and HJG spirit will pass on from generation to generation.