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3LPE coating pipe
Three layer polyethylene anticorrosion is one of the main technical system of buried pipeline corrosion protection domestic and abroad. It has good corrosion resistance, low water absorption and high mechanical strength. It has been used widely in the field of buried water conveyance, gas transmission and pipeline transportation in recent years.
GB/T23257-2009 technical standard for polyethylene anticorrosion coating for buried steel pipeline
SY/T0413-2002 technical standard for polyethylene corrosion resisting layer of buried steel pipeline
DIN30670-2012 technical standards for polyethylene coatings for steel tubes and fittings in Germany
CAN/CSA-Z245.21-M92 Canadian technical standard for polyethylene pipe anticorrosive coating on outer wall
Use: products are widely used in oil pipelines, natural gas pipelines, heating pipes, water pipelines.
DIN30670 Polyethylene coating of steel pipes and fittings
The minimum coating thickness should be selected according to the following table:
|
Pipe size |
min. thickness |
|
|
General (N) |
Reinforment (V) |
|
|
DN≤100 |
1.8 |
2.5 |
|
100＜DN ≤ 250 |
2.0 |
2.7 |
|
250＜ DN ≤ 500 |
2.2 |
2.9 |
|
500＜DN ＜ 800 |
2.5 |
3.2 |
|
DN ≥800 |
3.0 |
3.7 |
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