Coated composite steel pipe for water supply

2018/07/20



      Coating plastic steel pipes for water supply


Pressure grade: suitable for piping systems not larger than 10MPa.

Specification and model: DN40mm~DN1400mm.

Executive standard: CJ/T 120—2016 Coating Plastic Steel Pipes for Water Suppl

Performance features:

1. High pressure bearing and good mechanical performance: continue the advantages of steel pipes, have high mechanical strength and have strong bearing capacity for external impacts such as impact bending etc.

2. Strong chemical corrosion resistance: having the advantages of plastic pipes, the plastic coating has strong chemical corrosion resistance. The products can be coated with flanges, and all kinds of pipe fittings are treated with anti-corrosion treatment on inside and outside coatings to ensure the anti-corrosion effect of the whole pipeline.

3. Strong adhesion of coating: pretreatment by special process, reaching Sa2.5 standard before plastic coating, scientific and reasonable technology and advanced production equipment ensure coating quality.

4. No fouling, low fluid resistance: the inner surface coating is precise and non-fouling, thus the friction coefficient and the roughness coefficient are smaller than those of ordinary steel pipes. The roughness coefficient is equal to that of the plastic pipes, i.e. 0.01.

5. Various connection methods, convenient for construction: the products can be connected by various methods, including flange connection, quick coupling connection, bimetallic connection, and butt-welding connection, which is convenient for installation.

6. The internal and external coatings can be coated with different coating materials and colors according to customer requirements: the main coating methods include internal and external polyethylene powder coating, internal and external epoxy resin powder coating, as well as internal polyethylene powder coating and external epoxy resin powder coating. The colors can be replaced according to customer needs.


Specification and dimension: those of coating plastic steel pipes for water supply meet the requirements in the table below.

    
Specification and dimension

Q295 coating seamless steel pipes

Q235 coating welding steel pipes


Nominal outside diameter

D/mm


Coating thickness (mm)


Nominal outside diameter

Dmm


Coating thickness (mm)


Epoxy resin coating


Polyethylene coating


Epoxy resin coating


Polyethylene coating

48

 

Internal coating 0.30


External coating
0.35


Internal coating
0.40


External coating
0.60

48.3

Internal coating 0.30


External coating
0.35

Internal coating 0.40


External coating
0.60

60

60.3

76

76.1

89


Internal coating
0.35


External coating
0.40


Internal coating
0.50


External coating
1.0

88.9


Internal coating
0.35


External coating
0.40


Internal coating
0.50


External coating
1.0

(108)

(108)

114

114.3

(133)

(133)

140

139.7

(159)

(159)

168

168.3

219


Internal coating
0.60


External coating
1.2

219.1


Internal coating
0.60


External coating
1.2

273

273.1

325

323.9

356


Internal coating
0.60


External coating
1.3

355.6


Internal coating
0.60


External coating
1.3

(377)

377*

406

406.4

(426)

426*

457

457

508


Internal coating
0.40


External coating
0.45

508


Internal coating
0.40


External coating
0.45

(559)


Internal coating
0.80


External coating
1.5

(559)


Internal coating
0.80


External coating
1.5

610

610

(630)

/

(660)

(660)

711

711

(762)

(762)

813


Internal coating
0.45


External coating
0.50


Internal coating
1.0


External coating
1.8

813


Internal coating
0.45


External coating
0.50


Internal coating
1.0


External coating
1.8

(864)

(864)

914

914

(965)

(965)

1016

1016

/

/

/

1067


Internal coating
0.45


External coating
0.50


Internal coating
1.0

External coating 1.8

1118

(1168)

1219

(1321)


Internal coating
1.2

External coating 2.1

1422

 

 

分享至: