Loyalty means that we are looking for a long term relationship with our clients. Spotbusiness is not our target because we want a real connection based on mutual respect. Some suppliers say they consider their client being the king but they donot treat them as king. We donot say client is the king but a client is our partner. We like to work with our clients based upon partnership which means that we are aiming for mutual benefit respecting each other, keeping promises, encouraging each other with quality in products and services. We want to feel responsible for our clients. We want to show again and again our motivation and devotion to serve our clients. We want to prove that we donot give empty words but that we make true what we say. Believe us, give us the chance to confirm it.

Production site

Tubing Drawing  CUTTING

INSPECTION

PACKAGES 

• a) packed in plastic woven bags

• b)Packed In Wooden Cases
  
  c)  Packed In Cartons
• 
  
  

CONTACT: MS ALICE CHEN TEL:0086 22 26625616; FAX:0086 22 26631216; MOBILE:0086 15822528401; SKYPE:honghong6085; EMAIL:tianjinnorthgroup@gmail.com

Appearance of our factory & workshops

Appearance of factory

Appearance of workshops

Control of production procedure of our factory

Designed manufacturing procedure

①Inspection of raw material pipe: Chemical analysis,surface inspection,Tolerance of W.T:+/-8%, tolerance of OD:+/-0.75%。
②Inspection of pickling and lubrication
③Inspection after cold drawing: size&size tolerance,and internal&external surface.
④Tensile test: tensile strength,yield strength,elongation,hardness,flattening
⑤Inspection of straightness:horizontal straightness by device and vertical straightness by naked eyes.
⑥Polishing&inspection:external surface check.
⑦Second cold drawing:Size&size tolerance,internal&external surface.

Instructions about OD,ID,W.T,straightness of tubes:
1. Tolerance of OD will be as per standard specification,if there no specific requirement. ID tolerance as per customers’ requirements.
2. Ovality of ID: 0.15mm max.
3. Tolerance of W.T: +/-5%
4. Straightness: 0.5mm/1000mm max for tubes below 3m, 0.8mm/1000mm for tubes between 3m and 6m,1.2mm/1000mm for tubes between 6m and 9m

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

Trust and confidence

Trust and confidence is the most important issue in business. Many donot trust China because there is regular negative news about China. We like to make sure that for us this topic is essential. When customers donot have trust then we even donot want to start business. For us no trust, no business.we only promise what we can do, we never promise what we could not do, Business is a mutual activity and only mutual confidence can give optimal satisfaction. We want to prove confidence, make it true and sure. Please give us this chance and you wont be disappointed. Confidence can only be created by highest level of quality, best service possible, also after sales service reasonable fixed prices and reliable delivery times. Again, please give us a chance, we want to prove these things. Send us your specifications and you get a detailed quotation. Please try us out. We are available for you, now and in the future. For tubes, pipes, fittings according to international specifications and norms. We wait for you!!  Believe Ms Alice Chen, you will be never disappointed & you will always get a big surprise.



Contact: Ms Alice Chen 

Tel:0086 22 26625616;

Fax:0086 22 26631216;

Mobile: 008615822528401;

Skype: honghong6085

My best friend's wedding pic, beautiful ??