3PE anti-corrosion steel pipe

Applicationt: 

auto

Production Description:

It has the antiseptic property to be good, water-absorptivity low, mechanical strength higher performance.

     Second, outside three PE guards against corrosion (carries out the SY/T0413-2002 standard) two, three polyethylene (PE) guards against corrosion the buried pipe line to use in the fluming water, the oil, the gas and so on lying, the operating temperature 50°c-70°c, it has the antiseptic property to be good, water-absorptivity low, mechanical strength higher performance.

Table 1 anticorrosion level thickness

Steel pipe nominal diameter DN

(mm)

Epoxy powder coating

(μm)

Adhesive level

(μm)

Anticorrosion level smallest thickness (mm)

Popular type (G)

Strengthens (S)

DN≤100

≥80

170~250

1.8

2.5

1002.0

2.7

2502.2

2.9

5002.5

3.2

DN≥800

3.0

3.7

          Table 2 nodulizing epoxy coating performance index

 numberProjectPerformance indexTesting method1Adhesion (level)≤2This standard appendix A2Negative pole peeling (65°c,48h)(mm)Peeling distance ≤8This standard appendix B

        Table 3 polyethylene level performance index

 numberProjectPerformance indexTesting method1Longitudinal strengthAxial (MPa)≥20GB/T1040Circumferential (MPa)≥20GB/T1040Deviation (%)1)≤15 2Break elongation ratio (%)≥600GB/T10403Bears the environment stress dehiscence (F50)(h)≥1000GB/T18424Indentation hardness(mm)23°c±2°c≤0.2This standard appendix F

 Table 4 anticorrosion level performance index

 numberProjectPerformance indexTesting methodTwoThree1Racking strength(N/cm)20°c±5°c≥70≥100This standard appendix G50°c±5°c≥35≥702Negative pole peeling (65°c,48h)(mm) ≤8This standard appendix B3Shock strength (J/mm)≥8This standard appendix H4Anti-curving (2.50)The polyethylene does not have the dehiscenceThis standard appendix J