Origin	China
Model Number	86-15263613951
Brand Name	DONGBAO
size	2 3/8~4 1/2''
certificate	API

Advantages:1 anti-corrosiom 2 long operation life 3 as per API standard  4 high technology  5 high quality.

ZC coated tubing is coated by a kind of special coating material which is super corrosion prevention and abrasion resisting. Its corrosion prevention and abrasion resisting characters are unique and can be used in water injection wells to prevent corrosion; in eccentric wear wells to prevent abrasion; in submersible electric pump wells to prevent erosion, etc. Its service life is three to five times longer than those uncoated tubing.

Main advantages:

1.Integrating eccentric-well proof and corrosion proof as a whole

  a. High effect of anti-wear: its anti-wear effect is improved 3 to 5 times than common one.

  b. Corrosion proof: resistance to the corrosion of acid salt and corrosive gases in the produced fluids.

2.Protect both the tubing and the sucker rod

3.Adaptation to extensional deformation due to the change of well temperature and stress.

4.Tubing sizes: 2-3/8~4-1/2 as per API 5CT standard.

5.Rarely change the job process.

Principal Technical Indexes of ZC coat:

NO.	Item		Quality Index
1	appearance		Leveling at the surface,homogeneous tint, no bubble,fractures and shrinkage cavity;slightly orange husks flower permitted
2	Density, g/cm3		1.3~1.65(according to the indent)
3	Nonvolatatile matter content,%		99.4
4	Impact strength, J		11
5	Abrasion resistance (1000g, 1000r/min), mg		20
6	Coating hardness(scratch by 2H pencil)		No scribe
7	Adhesion (by price method), grade		2
8	Bending resistence(4°)		Coating has no crack
9	Salt-fog test(1000h)		Coating has no change
10	Chemical medium corrosion prevention ability	10%HCLnormal temperature, 90d 10%H2SO4 normal temperature, 90d 3.5%NaCl normal temperature, 90d 10%NaOH normal temperature, 90d	Qualification
11	Coating thickness,		200~800(according to the indent)
12	Adaptioon to temperature		180