The following situations do not apply to the "after-sales service" conditions

1. No compensation will be given for non-standard products and special drill rods;

2. No compensation will be given for damage caused by thread bumping or bending deformation due to improper use or handling;

3. No compensation will be given for failure and damage caused by unauthorized modification, rod welding, and adjustment of component structure;

4. No compensation will be given for failure of the thread due to blackening, blueing, and wear and tear caused by failure of the thread due to failure to apply thread oil as required;

5. If 2-3 similar abnormal failures occur in succession when using our drill rods in batches, please stop using them immediately and contact our sales manager to explain the situation. Our company will provide solutions based on the working conditions and usage. If the customer fails to discover the abnormality in time and continues to use a large number of abnormal failure drill rods, the company will not compensate;

6. For drill rods that have been compensated or repaired, the company will register the production batch number and maintenance record. If they are broken and damaged when used again, no compensation will be given;

7. Thread wear failure: arc surface wear of corrugated thread ≥1.5mm; tooth surface wear of trapezoidal thread >1mm .

8. Rod wear failure: For round drill rods with a rod diameter of R32-R52, the diameter loss ≥1.5mm; for hexagonal drill rods with a rod diameter of H25- H35, the diagonal diameter wear is ≥2mm.

9. If there are obvious scratches with a depth of ≥0.5mm after use, and the circumference is spiral, and fatigue failure and fracture occur, no compensation will be given;

10. When drill rods produced by different manufacturers are mixed or the difference between the old and new drill rods is large, the thread will be worn or damaged quickly, and no compensation will be given;

11. No compensation will be given for bending deformation and damage caused by construction in special formations such as pebble layers, broken formations, reinforced concrete, and karst caves;

12. No compensation will be given for early failure of the drill rod due to improper maintenance, care, operation or human factors;

Note: The economic losses compensated by the "three guarantees" refer to the direct losses of the parts themselves that are damaged due to product quality reasons. The downtime and other indirect economic losses in operation caused by this will not be compensated.

1 、非标产品，特制钎杆，不予赔偿;

2 、因使用或搬运不当，造成螺纹磕碰损坏或弯曲变形损坏的，不予赔偿;

3 、擅自改装、杆体焊接、调整零部件结构，造成的失效损坏，不予赔偿;

4 、螺纹未按规定要求涂抹丝扣油，造成螺纹粘扣发黑发蓝磨损失效的，不予赔偿;

5 、批量使用我司钎杆，连续出现2-3支类似异常失效现象，请立即暂停使用，并联系我公司销售经理说明情况，我司会根据工况及使用情况提供解决方 案。如客户未能及时发现异常并继续使用产生大量非正常失效钎杆，公司将不予赔偿;

6 、已经赔偿过或维修过的钎杆，公司会登记生产批号和维修记录，如再次使用断裂损坏的，不予赔偿;

7 、螺纹磨损失效:波形螺纹的圆弧面磨损≥1.5mm;梯形螺纹的牙面磨损>1mm。

8 、杆体磨损失效:杆体直径R32-R52的圆形钎杆，直径损≥1.5mm;杆体直径为H25-H35六角钎杆，对角 直径磨损≥2mm。

9 、使用后有明显划痕深度≥0.5mm ，且呈圆周螺旋状一圈的，出现疲劳失效断裂的，不予赔偿;

10.混用不同厂家生产的钎杆或新旧相差较大的钎杆时，造成螺纹快速磨损或损坏，不予赔偿;

11.在卵石层、破碎地层、钢筋水泥、溶洞等特殊地层中施工，造成的弯曲变形和损坏，不予赔偿;

12. 因维护、保养、操作不当或人为因素造成钎杆早期失效，不予赔偿;

注:“三包”赔偿的经济损失，是指由于产品质量原因而受到损坏的零部件本身的直接损失，因此造成的停机及经营上的其他各项间接性经济损失，不予赔 偿。

In the case of the above conditions,

If the drill rod / drill bit / shank adapter is broken or the thread is broken. Please give feedback and negotiate with our sales staff in time.

Our company can compensate for the products that have been used and abnormally damaged in the new order.

符合以上条件的情况，出现钻杆、钻头、钎尾断裂，螺纹断裂的情况， 应及时与我们反销售人员反馈并协商；

我公司可以在新的订单中补偿已经使用并出现异常损坏的产品。

Location 1:

Location 1:

Drill rod connection is broken

位置1钎杆连接处断裂

The defect of the undercut groove causes stress concentration

退刀槽加缺陷造成应力集中

Improve drill rod production process and strengthen production quality management

改进钎杆生产工艺，加强生产质量管理

Position 2:

Position 2:

The middle part of the rod is broken

位置2杆体中间部位断裂

Defects in the drill rod raw materials

(shrinkage holes and inclusions in the

structure) cause stress concentration in this area, resulting in microcracks. The cracks

further extend and expand, causing the rod to break.

钎杆原材料缺陷(组织中存在缩孔、夹杂)而造成该部 位出现了应力集中，产生微裂纹，裂纹进一步延伸 扩展导致杆体断裂

Report the situation to the drill rod supplier and provide broken samples for analysis

向钎杆提供者反映情况，并提供断样供其分析

Position 3

Position 3

The thread end is broken at the threaded connection, a typical sudden failure

位置3在螺纹连接部位螺纹尾端断裂，典 型的突变故障

The matching axis of the rod drill bit is offset from the axis of the construction hole

钎杆钎头的配合轴心与施工孔轴线偏移

Use a pilot hole device or system

使用导正孔装置或系统

Excessive wear of threads or sleeve threads

螺纹或连接套螺纹过度磨损

Replace worn parts and do not use worn connectors on new drill rods

更换磨损部件，不使用磨损的连接套装在新钎杆上

Excessive feed force causes the drill rod to bend

过量给进力造成钎杆弯曲

Monitor feed force and adjust according to rock conditions

监测给进力并根据岩层状况调整

The feeding direction of the drill tool deviates from the construction hole, causing the drill rod to bend and the thread to be subjected to torque.

钎具进给方向偏离施工孔，导致钎杆弯曲，螺纹遭 受力矩

After drilling, use a calibration tool to check the

direction of the hole. If the hole deviates, replace the feed guide plate.

开孔后，使用校正工具检测孔的方向，一旦孔偏离，更换给 进导轨板

The rotation speed is too fast when

withdrawing the rod (lifting the drill rod) 退杆(提钻杆)时回转速度过快

Adjusting the rock drill pressure

调整凿岩机压力

Excessive wear of the drill bit causes an

increase in reverse force and excessive rotary load

过度磨损的钎头导致反向力增加使回转负荷过大

When the wear surface reaches 1/3, the drill bit should be ground. When the alloy button height is insufficient, the drill bit should be discarded.

当磨损平面达到1/3应修磨钎头。当合金齿高度不足弃用该 钻头

Poor working conditions, encountering rock and soil cavities, interlayers or faults

工况不良，遇到岩土空穴、夹层或断层

Adjust the rock drill system pressure to suit the rock formation conditions

调整凿岩机系统压力，适应岩层状况

When the drill rod is stuck, the temperature of the threaded connection rises sharply, and the stress concentration leads to cracks.

当钎杆卡住时继续冲击，造成螺纹连接处温度骤 升，应力集中导致裂纹产生

Use a drill with anti-jamming function to reduce feed and impact pressure

使用带防卡功能的钻机，降低给进和冲击压力

Position 4

Position 4

Surface stress or shear force is too

high and the thread breaks at 1/3

位置4表面应力或剪切力太高在1/3螺纹 处断裂

Thread wear or surface wear

螺纹磨损或表面磨坏

Replacement of worn parts

Improper storage, transportation and

maintenance of the drill rod may cause

damage to the thread, resulting in notches or dents

钎杆存放、运输及维护不当，造成螺纹碰伤，产生 缺口或凹痕

The drill rod must be equipped with a threaded

protective sleeve before installation. The drill rod should be stored in the drill storage container after being lifted up. Do not place it randomly.

钎杆在装机前，必须带有螺纹保护套。钎杆提上来存放在储 钎器里，不要随意摆放

Position 5

Position 5

The end of the drill rod thread is broken

位置5钎杆螺纹端部破碎

The gap between threaded joints is too large and the thread fit is unbalanced

螺纹接部位间隙太大，螺纹配合不均衡

Replacement of worn parts 更换磨损部件

Direct impact on the end of the drill rod

直接冲击钎杆尾端

Use the removal plate to loosen the connection 使用拆卸板松开连接

Unused impact energy is fed back to the drill (dry hit)

未使用的冲击能反馈到钻机(空打)

Adjust drilling rig pressure to suit rock conditions

调整钻机压力，适应岩层状况

Position 3-5

Position 3-5: Burning (pitting) pits appear on the surface of the drill pipe thread

位置3-5钻杆螺纹表面出现烧（点）蚀坑

The drill bit is too blunt

钎头太钝

When the wear surface of the drill bit reaches 1/3, grind the drill bit. If the height of the button layer is not enough, discard the drill bit.

当钎头磨损平面达到1/3时修磨钎头，当合金层高度不够弃 用该钎头

Position 6:

Position 6:

The middle of the connection (large end) is broken

位置6连接部位(大头)中部断裂

The construction hole deviates or the feed direction deviates from the direction of the hole

施工孔偏离或给进方向偏离孔的方向

Using a straight hole guide

使用直孔导引装置

Rock drill feed pressure is low

凿岩机给进压力低

Detect feed pressure and adjust to suit rock formation level

检测给进压力并调整到适应岩层级别

The drill bit is too blunt and the rotary load of the drill rod is too heavy.

钎头太钝，钎杆回转负荷过重

When the wear surface of the drill bit reaches 1/3, grind the drill bit. If the height of the button layer is not enough, discard the drill bit.

当钎头磨损平面达到1/3时修磨钎头，当合金层高度不够弃 用该钎头

Notches or dents on the internal thread

surface of the drill rod (stress concentration) 钎杆内螺纹表面缺口或凹痕（应力集中）

Avoid impact on the connection and use a disassembly plate to loosen the connection. 避免冲击到连接部分，使用拆卸板松开连接

Position 7:

Position 7:

The internal thread (female thread) port is cracked, broken or opened 位置7内螺纹(母螺纹)端口部位开裂、碎 块或张开

Internal and external threads do not match, thread connection is uneven

内外螺纹不匹配，螺纹连接不均匀

"Use standard products from the same supplier to ensure the right,thread tolerances, do not mix and match"

使用同一供应商的标准产品，确保合适的螺纹 公差，不混合使用和匹配

Using old and new drill tools together, thread connection is uneven

新旧钎具配合使用，螺纹连接不均匀

Use old and new drill tools together, thread connection is uneven

新旧钎具配合使用，螺纹连接不均匀

Improper feeding (advancement) of the rock drill (too high or too low)

凿岩机给进(推进)不当(过高或过低)

Maintain equipment 维护保养设备

Overheating of the thread connection

螺纹连接部位温度出现过热

The maximum operating temperature of the connection sleeve is 182 degrees Celsius 连接套最高使用温度是182摄氏度

Internal and external thread connection is not in place, and the impact energy is completely applied to the thread connection

内外螺纹连接部位不到位，冲击功完全作用在螺纹 连接上

Do not impact the work before the end of the

external thread enters the bottom of the internal thread interface (connection sleeve)

在外螺纹末端没用进入内螺纹接口(连接套)底端前不要冲击 工作

Position 1

Position 1

Impact marks, broken edges, mushroom-shaped tail

位置1

冲击痕迹，碎边角，蘑菇状尾端

Bushing wear, resulting in impact deviation

衬套磨损，致使冲击偏向

Replacement of worn parts 更换磨损部件

Piston damage

活塞损坏

Replacement of worn parts 更换磨损部件

Position 2

Position 2

Breakage about 25mm from the striking surface

位置2

距离打击面大约25mm处断裂

Drive chuck wear 驱动卡盘磨损

Replacement of worn parts 更换磨损部件

Fatigue damage at water seal groove

水封凹槽处疲劳破坏

Further inspection and analysis

进一步检测分析

Position 3

Position 3

Spline top fracture 位置3花键顶部断裂

Lack of lubrication

缺少润滑

Lubricate the drill regularly

定期润滑钻机

Feed force (propulsion force) is too large 给进力(推进力)过大

Monitor the temperature of the connection sleeve and adjust the feed pressure according to the

recommended value

监测连接套温度并根据推荐值调整给进压力

Drive chuck or front bushing wear

驱动卡盘或前衬套磨损

Replacement of worn parts 更换磨损部件

Position 4

Position 4

Spline section fracture 位置4花键截面断裂

Drive chuck wear 驱动卡盘磨损

Replacement of worn parts 更换磨损部件

Rotation torque (rotation pressure) is too large 回转扭矩(回转压力)太大

Adjust the drilling rig pressure

调整钻机压力

Lack of lubrication

缺少润滑

Adjust the rock drill system pressure to suit the rock formation conditions

调整凿岩机系统压力，适应岩层状况

Overuse of drill bit wear surface is too large and the protruding distance of ball teeth is not enough

超期使用钎头磨损平面过大和球齿突出距离不够

When the wear surface of the drill bit ball button

exceeds 1/3, the drill bit needs to be repaired. When the carburized layer height is insufficient, the needle head is discarded. Check and select the drill bit with suitable protrusion distance and shape to reduce

drilling costs

当钎头球齿磨损平面超过1/3时需修磨钎头，渗碳层高度不 足时弃用针头。检查和选择突出距离和

外形合适的钎头使用以降低钻探成本

Inappropriate feed force (propulsion force) 给进力(推进力)不当

Monitor the temperature of the connection sleeve and adjust the feed pressure according to the

recommended value

监测连接套温度，参照推荐值调整给进压力

Position 5

Position 5

Spline boss bottom wear 位置5花键凸台底部磨损

Excessive rotation when lifting drill rod

提升钻杆时过度回转

Adjust the feed pressure (advance pressure)

调整给进压力(推进压力)

Position 6

Position 6

Spline bottom fault

位置6花键底部故障

Excessive rotation when lifting drill rod

提升钻杆时过度回转

Adjust the feed pressure (advance pressure)

调整给进压力(推进压力)

Position 7

Position 7

Broken at the water hole (air hole) 位置7

水孔(气孔)处断裂

Stress is most concentrated

应力最集中

Water pressure alternation, easy to corrode and cavitation, micro cracks

水压交变，容易腐蚀与气蚀，微裂纹

Position 8

Position 8:

Front end fault of the shank tail (guide support area

位置8钎尾前端故障（导向支撑区

Front bushing wear deviation (guide support sleeve wear deviation)

前衬套磨损偏向（导向支撑套磨损偏向）

Replacement of worn parts 更换磨损部件

Guide support sleeve lacks lubrication

导向支撑套缺少润滑

Regularly add grease to the drill

定期给钻机加黄油润滑

Position 9

Position 9:

Fault at the back cutter groove at the upper end of the thread

位置9螺纹上端退刀槽处故障

Feed (propulsion) deviation when drilling 钻孔时给进(推进)偏向

After drilling, use a correction tool to monitor the

direction of the hole. Once the hole deviates, replace the feed guide plate

开孔后，使用校正工具监测孔的方向，一旦孔偏离,更换给 进导轨板

Hole deviation

孔偏离

Use a straight hole guide device or system

使用直孔导正装置或系统

Feed pressure is too large

给进压力过大

Monitor the temperature of the connecting sleeve and adjust the feed pressure according to the

standard value

监测连接套温度并参照标准值调整给进压力

Position 10

Position 10:

Thread base failure (broken in the middle of the thread)

位置10螺纹基体故障（螺纹中部断 裂）

Thread mismatch

螺纹不匹配

Use genuine parts from the same manufacturer 使用同一厂家身缠的纯正部件

Lack of lubrication

缺少润滑

Regularly add grease to lubricate the drill

定期加黄油润滑钻机

Connection sleeve gap is too large, due to thread wear, improper connection of joint 连接套间隙太大，由于螺纹磨损接头连接不当

Replace worn parts, do not use the worn connecting sleeve to connect the new drill rod, replace the new connecting sleeve with a new shank adapter

更换磨损部件，不使用磨损连接套连接新钎杆，更换新连接 套配合使用新的钎尾

Position 10

Position 10:

Thread base failure (broken in the middle of the thread)

位置10螺纹基体故障（螺纹中部断 裂）

Overbite

过度咬合

Avoid over-tightening. If the connection cannot be loosened, check the thread. Possible causes of thread tightness include:

1. The drill bit is too blunt;

2. The drill rod or the connecting sleeve thread is worn or turned too tight;

3. Improper or over-tight assembly;

4. Insufficient lubrication

避免过度拧紧，如果连接不能松开，应检查螺纹可 能造成螺纹太紧的因素有：

1、钎头太钝；

2、钻杆或连接套螺纹磨损或转得太紧； 裂）

3、不正确或过紧装配；

4、润滑不够

Position 11

Position 11

Thread bottom failure (thread bottom broken)

位置11螺纹底部故障(螺纹底部断裂）

Excessive impact pressure 冲击压力过大

Monitor the temperature of the connection sleeve when drilling; adjust the impact pressure

钻孔时监测连接套温度;调整冲击压力

Damage to drill pipe

钻杆损坏

Replace the drill rod

更换钻杆

Wear of connecting sleeve (threaded connection)

连接套(螺纹连接处)磨损

Replace the worn parts, do not use the worn

connection sleeve to connect the new drill rod: the connection sleeve is replaced together with the drill rod

更换磨损部件，不使用磨损的连接套来连接新的钻杆：连接 套与钻杆一起更换

Position 12

Position 12

Thread end chipped

位置12螺纹末端碎裂

Poor contact between the end face of shank and the end face of drill pipe connection

钎尾端面与钻杆连接部位端面接触不良

Replace the damaged or worn connection sleeve or shank adapter

更换损伤或磨损的连接套或钎尾

Continued use of damaged end of drill pipe (threaded connection)

钻杆端部(螺纹连接处)损坏继续使用

Replace new parts 更换新的部件

Position 13

Position 13

Thread erosion and galling 位置13螺纹烧蚀和磨伤

Exceeded use of drill bit, excessive wear

surface and insufficient protrusion of button 超期使用钎头，磨损平面过大和球齿突出距离不够

When the wear surface of the drill head ball tooth exceeds 1/3, the drill head needs to be sharpened When the carburized layer height is insufficient, the drill head is discarded; check and select the drill

head with suitable protrusion distance and shape to reduce costs

当钎头球齿磨损平面超过1/3时需要修磨钎头

当渗碳层高度不足就弃用该钻头；检查和选择突出距离和外 形合适的钎头使用降低成本

Lack of lubrication

缺少润滑

Regularly add grease to lubricate the drill

定期加黄油润滑钻机

Improper feed force (improper propulsion force)

给进力不当(推进力不当）

Monitor the temperature of the connection sleeve and adjust the feed pressure according to the

recommended value

监测连接套温度并参照推荐值调整给进压力

Position 13

Position 13

Thread erosion and galling

位置13螺纹烧蚀和磨伤

Lack of lubrication

缺少润滑

Regularly add grease to lubricate the drill

定期加黄油润滑钻机

Excessive rotation in soft or fragile formations 在松软或易碎地层回转过大

Adjust the drilling rig pressure

调整钻机压力

Position 15

Position 15

Spline boss top is too worn 位置15花键凸台顶磨损过大

Excessive feed force

给进力过大

Monitor the temperature of the connection sleeve and adjust the feed pressure according to the

recommended value

监测连接套温度并参照推荐值调整给进压力

Lack of lubrication

缺少润滑

Regularly add grease to lubricate the drill

定期加黄油润滑钻机