Our factory Quality control system

Certification system

Qualification certification:
We got ISO9001-2000 certification in 2004 and get the revision edition in 2007 and ISO9001-2008 in 2010 respectively.

Test&inspection system

In house inspection：

Through years’ of operation,continuous satisfaction of customers’ requirements,and cooperation with big customers,we have already established a feasible quality control system,covering inspection of raw material,inspections in different production stages,as

well as aftersales services.

1. Traceability of product: Inspection of raw material,Mill Test Certificate of raw material,management of stock ensure that we can track

each piece of tube we produce and ship.

2. Control of production procedure: There are inspections and inspection records in different manufacturing stages and this ensures that

each piece of problem tube is rejected in our workshop.

3. Control of finished tubes:A final overall inspection will be carried out to ensure the overall quality of tubes.Based on this, we will issue

our Mill Test Certificate to our customers.

Material test machine	Hardness tester	Ultrasonic thickness tester
		Roughness tester

Quality improvement

We are devoting ourselves to improving the oeverall quality of the tubes through introduction of human resources,improvement&input of equipment&device,proceduction procedure,and management.

We ensure stable quality through stablizing the sourcing channel of raw material and strict in house test&inspection system.

Based on stable quality, we adpoted hot phosphating procedure, use high quality alloy steel modules with regulated dialy maintenance, and better packing material to ensure that the tubes are of better internal&external surface quality,more strict size tolerance,better appearance,and under better proection&storage.

Third party inspection

As an important part of quality control system in our company,the inspection range covers general test items like chemical analysis,tensile test,hardness test,and special requirements like impact test,metallographic test,etc. We can accept any world famous third party inspection authorities like SGS,BV,Intertek Moody,etc. Customers can also authorize us to appoint third party inspection authorities and we ensure the qualification of these authorities who are all national certified professional labs in world famous enterprises