Advantages: 1. Our products can match over 95% against the original products. 2. High quality raw material, with premium hardened procedures for long life. 3. Full production chain to secure stable and prompt production leadtime. 4. Experienced senior technicians and long year experienced workers and engineers. 5. Customized acceptable and quick and efficient service. 6. Price are competitive against the famous brands and best quality against the small factory. 7. Owing to high quality, professional serivce and competitive price, we have gotton good reputation from our customer all over the world, such as France, Spain, Italy, South Africa, Australia, Iran, Malaysia, etc. The advantages of hammers without foot valve against with foot valve: 1. No more worries on the foot valve breakage or distortion or expansion due to the abrasion or high tempreture. 2. Higher impact rate, lower energy consumption, around 15-30% higher drill speed than the one with foot valve 3. Remain simple design, and reliable parts, long life, easy and cheap maintenance. 4. Lower air and oil consumption, oil consumption can be around 10% lower than the one with foot valve. 5. Strongly recommond. Product Photos: Products Specifications: Hammers Bit Shank Connection Thread Suitable bit Working pressure Air consumption 1-3" Middle-low pressure DTH hammers BR1 RD40 box 64-76mm 0.7-1.75Mpa 0.7Mpa 4.5m3/min BR2 RD50 box 70-90mm 0.7-1.75Mpa 1.0Mpa 4m3/min BR3 API 2 3/8" Reg 90-110mm 0.7-1.75Mpa 1.4Mpa 5m3/min 3" hammers DHD3.5 API 2 3/8"Reg 90-110mm 1.0-1.5Mpa 1.0Mpa 4.5m3/min COP32/COP34 M30 1.5Mpa 9m3/min 4" hammers DHD340 API 2 3/8"Reg 105-130mm 1.0-2.5Mpa 1.0Mpa 6m3/min COP44 QL40 SD4 1.8Mpa 10m3/min M40 2.4Mpa 15m3/min 5" hammers DHD350 API 2 3/8"Reg/API 3 1/2"Reg 130-156mm 1.0-2.5Mpa 1.0Mpa 9m3/min COP54 QL50 SD5 1.8Mpa 15m3/min M50 2.4Mpa 23m3/min 6" hammers DHD360 API 3 1/2"Reg 152-203mm 1.0-2.5Mpa 1.0Mpa 10m3/min COP64 QL60 SD6 1.8Mpa 20m3/min M60 2.4Mpa 28.5m3/min 8" hammers DHD380 API 4 1/2"Reg 200-279mm 1.0-2.5Mpa 1.0Mpa 15m3/min COP84 QL80 1.8Mpa 26m3/min SD8 2.4Mpa 34m3/min 10" hammers SD10 API 6 5/8"Reg 254-330mm 1.0-2.5Mpa 1.0Mpa 22m3/min NUMA100 1.8Mpa 40m3/min 2.4Mpa 55m3/min 12" hammers DHD1120 API 6 5/8"Reg 305-381mm 1.0-2.5Mpa 1.0Mpa 30m3/min SD12 NUMA120 1.8Mpa 56m3/min NUMA125 2.4Mpa 78m3/min Production Process Flow Chart: About Us: We are a leading manufacturer for various of rock drilling tools, incl. DTH hammers and bits, RC hammers and bits, top hammer button bits, ODEX etc. Our factory locates in LiuYang city, HuNan province, China, where occupies an area of 26,600 square meters, and production facility occupies 22,000 square meters. Premium quality, professional serivce and competitive price, we get very good reputation from our worldwide customers, not only from the domestic, but also from Brazil, Peru, South Africa, Australia, Turkey, Russia, Ukraine, Korea etc.. Factory Overview: Our Team and Exbition: Certificate: Quality Warranty: Our products are made of high quality steel and all spares parts are inspected strictly before shipping. We have quickly responses for your complaint and suggestion. Package and Shipping: Frequently Asked Question: 1.Are you a manufacturer or a trade company? We are the first-class drilling tools manufacturer in China. 2.How many workers in your factory?and what is your company scale? We have more than 100 employees.Our company has many senior mechanical design engineers with more than 20 years of design experience in the drilling tool, the production process and technology are at the first-class level