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quality control system
GRH has established ISO9000 quality control system and now is implementing TS16949 quality management system.

 

key point equipments
In order to guarantee steady product quality, reliable processing technic and inspection equipment is an important precondition.
Testing equipment
   
roducts are all 100% tested before factory shipment and the inspectors proceed spot inspections with a high frequency in light of international standard to guarantee quality of the products.
Machining equipments and technology of gear pump
   
Machining center: combination of advanced fixture and machining center with an excellent performance can satisfy technological requirements on high accuracy and efficiency.
numerically controlled lathe: numerically controlled lathe is used for machining of hydraulic valve and shaft components.
fine boring machine: specialized fine boring machine is used for machining of gear hole of gear pump body and bushing hole. Its understanding rigidity and remarkable boring performance ensures the size of the hole and accuracy of the position.
profiling machine: profiling machine can ensure the shape, deepness and roughness of the seal groove.
gear hobbing machine, gear shaving machine and gear honing machine: We have product line of gear hobbing, gear shaving and gear honing and can produce accurate gears of all kinds in batches.
Gear inspection equipments 
    

Comprehensive inspection for accuracy of gears ensures that efficiency of gear pump and gear motor is high and the noise is low. 

Physicochemical inspection equipment
   

physicochemical equipments: physicochemical equipments conduct 24 hours monitoring for the raw material and parameters of all kinds.

Casting equipments and technology of heat treatment 
    
controlled atmosphere carburizing furnace: performance is good , its parameters and procedures are controlled by computer which makes the quality of heat treatment more steady and reliable.
casting technique: unique aluminum alloy formula and casting technique make it possible for the aluminum alloy castings to bear pressure up to 30Mpa. Its ingredient that stands wear and tear makes the performance more reliable.
Excircle face grinding machine: it ensures accuracy of the surface which is operation with a high speed.
Assembling and washing
   
Working procedure of pressfit and final assembly: strict technology and scientific procedure keep the assembling process in a controlled condition.
Washing in the working procedures before assembling ensures the cleanliness of products.
Product tracking
   
Tracking code and bar code is sole which makes the traceability of products accurate and reliable.
Our philosophy
 Create international brand, build first-class enterprise
Market is everywhere, everyone has his market
The highest standard in the industry is our lowest requirement
Quality first, customers supreme.

 
 
 
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