潜孔钻具赔偿原则
  为了便于客户了解我公司关于潜孔钻具产品质量问题的保障承诺和处理标准，增强彼此间的沟通和联系，特拟定下述几项原则和标准，请客户参照执行。
1. 打花岗岩和石英砂岩的钻头体使用寿命不到1/2的情况下出现断体；打花岗岩和石英砂岩的钻头边齿合金原露出部分磨损不到1/7边齿出现连续二粒或二粒以上断齿。这二种情况100%赔偿。
2. 钻头使用寿命不到1/4的情况下，出现2粒以上整颗合金齿柱从齿孔中完全脱落的现象，退回我公司维修。
3. 如应该赔偿的钻头本公司记上赔偿钻头的编号，如再次出现断裂、断齿，本公司不再次赔偿。
4. 因操作不当等人为因素和打钢筋混凝土等造成的钻头碎齿、掉块、断体不予赔偿。
5. 在钻头体及合金已经磨损严重的情况下，出现钻头断体、掉块、断齿和掉齿，一般不予赔偿。
6. 在石灰岩、风化岩、煤矿等软岩和在非常坚硬且阻力很大的铁矿石情况下使用，钻头出现断体、崩块和掉齿、断齿现象，我公司一律不予赔偿。
7. 高风压钻头客户要求装边齿、尖齿、弹头齿、抛物线齿出现断齿、掉齿、掉块的情况下一概不予赔偿。
8. 异形钻头在下列情形一概不予赔偿：配3英寸的钻头，头部直径大于105mm的；配4英寸冲击器，头部直径大于130mm的；配5英寸冲击器，头部直径大于165mm的；配6英寸冲击器，头部直径大于203mm的；配8英寸冲击器，头部直径大于300mm的；配10英寸冲击器，头部直径大于350mm的。
9. 打水井、地热、水下作业的冲击器在换钻杆时因停止气压和其他原因导致冲击器进水、泥巴、沙子等无法冲击及里面磨损过大的，本公司可帮客户拆洗，不负责赔偿。
10. 冲击器在使用早期，外缸、活塞和卡钎套等零配件出现破裂现象，可以根据情况赔偿破裂的零配件。
11. 在冲击器已更换过外缸、冲击器使用超过伍千米以及操作不当（如不注油等现象）的情况下，活塞出现断裂我公司一律不予赔偿。
12. 3英寸冲击器风压超过15bar、4英寸冲击器风压超过20bar、5英寸超过23bar、6英寸冲击器超过25bar、8英寸超过35bar的情况下出现活塞及所配用的钻头断裂，一律不予赔偿。
13. 凡批量使用我公司钻头产品，在出现异常情况之初（使用2~3个钻头出现同种异常损坏现象），请及时与我公司或供应商取得联系，并暂停使用余下产品，我公司将及时提供服务，做出处理（如换货）。如未与我公司或供应商联系，继续使用，我公司不予赔偿。
14. 处理程序：用户使用我公司钻具产品出现上述情况，首先应将损坏实物（钻头尾部必须保留）及时交我公司生产技术部，我公司根据质量服务承诺和处理标准于一周内给予回复。
15. 如有其它争议的情况出现，必须将残体发回我公司，然后经双方友好协商处理。
对上述原则和标准如有异议，我公司负责给予解释。

 Compensation Principles for Drilling Tools
In order to facilitate our customers to understand the guarantee commitments and processing standards about the quality of the down-the-hole drilling tools products of our company and enhance communication and contact between us, the following principles and standards are specially drawn up for the customer to refer to.
1. If the following two cases happened, we would give 100% compensation: if drill bit body for granite and quartz sandstone is broken with less than 1/2 service life or if there are consecutive two or more guage buttons broken before 1/7 abrasion of the guage buttons.
2. If 2 or more whole carbide buttons completely detach from the button hole with less than 1/4 service life of the drill bit, you can return it to our company for maintenance.
3. We will record the number for the drill bits which should be compensated. If the body is broken or the button is off again, we will not re-compensate it.
4. There is no compensation for broken button, drop piece or broken body of the drill bit if they are caused by improper operation or other human factors or driving reinforced concrete, etc.
5. Generally there is no compensation for broken body, drop piece, broken button or drop button of the drill bit if the drill bit body and carbide buttons have worn severely.
6. When used on soft rock such as limestone, decomposed rock, coal mine and so on or on iron ore which is very hard and of great resistance, the occurrence of broken body, drop piece and lost button, broken button to the drill bit shall not be compensated by our company.
7. When high-pressure drill bits customers require the installation of side button, sharp button, ballistic button, or parabolic button, the occurrence of broken button, lost button, and drop piece shall not be compensated.
8. Special shaped drill bit under the following circumstances shall not be compensated: 3-inch drill bit, head diameter greater than 105mm; 4-inch drill bit, head diameter greater than 130mm; 5-inch drill bit, head diameter greater than 165mm; 6-inch drill bit, head diameter greater than 203mm; 8-inch drill bit, head diameter greater than 300mm; 10-inch drill bit, head diameter greater than 350mm.
9. When changing the drill pipe, due to stop of air pressure and other causes, the DTH Hammer for water wells, geothermal, or underwater operations stop working or have excessive wear and tear inside for inflowing water, mud, sand and so on, we can help customers to take apart and wash them, but we are not responsible for compensation.
10. In the early use of the DTH Hammer, rupture appears on parts such as external cylinder, piston and drive chuck etc., the broken parts can be compensated.
11. Our company will not be liable for compensation of broken piston in the following circumstances: the external cylinder of the DTH Hammer has been replaced; the DTH Hammer usage exceeds the limitation of 5 thousand km or improper operations (e.g. no oiling).
12. Our company will not be liable for compensation of broken pistons and bits in the following circumstances: air pressure exceeds 15bar for a 3-inch DTH Hammer, 20bar for a 4-inch DTH Hammer, 23bar for a 5-inch DTH Hammer, 25bar for a 6-inch DTH Hammer, and 35bar for an 8-inch DTH Hammer.
13. When unusual events (same unusual damage occurring to 2~3pcs bits) happen during the bulk use of our bits, please contact our company or supplier as soon as possible and suspend using the remaining products. We will offer service in time to handle the case (e.g. replacement). No compensation shall be allowed if no contact is made and the products continue to be used.
14. Handling process: in case of above-mentioned events while using our drilling tools, user shall firstly send damaged products (the shank must be reserved) to our Production & Technology Department. Our company will reply within a week in accordance with the quality and service commitment and treatment standard.
15. When any other disputes occur, residues shall be sent back to our company and two parties negotiate a settlement.
If there is dispute on above principles and criteria, our company is responsible for an explanation.