Special features of the products
· The Polyurea steel pipe is coated by the polymerization reaction of an isocyanate, the main agent, and amine,
which makes the ultrahigh-speed curing reaction.
· Excellent in circular steel pipe adhesion strength, impact strength, abrasion resistance,
and durability resulting from the formation of a solid expanded film.
· Meets with American Water Works Association Standards (AWWA C 222) at thedrinking water tests for the application of coated steel pipes for the water supply
· Passed 44 examination items in water supply materials and hygiene safety standards of the Ministry of Environment
Advantagesof the Products
Quality level compared to similar steel pipes
| Item | Unit | Standard level | For each inside coating material | Applied specifications | ||
|---|---|---|---|---|---|---|
| Polyurea | Polyurethane | Liquid epoxy | ||||
| Adhesion strength | psi | 1,500 ≦ | 2,000 ≤ | 1,600 ≤ | 800 | ASTM D 4541 |
| Cathodic disbondment | mm | 12 ≧ | 1 | 4 | 4 | KS D 3589 (60℃for two days) |
| Abrasion resistance | mg | 100 ≧ | 75 | 76 | 93 | ASTM D 4060 |
| Absorption rate | % | 3 ≧ | 0.10 | 0.40 | 0.38 | ASTM D 570 |
| Dissolution test | – | NSF 61 | Water supply materials and product hygiene safety standards according to the Water Supply Act |
– | KS D 8502 28 items |
– |
Product characteristics
1. Excellent chemical resistance
Because it has excellent durability and chemical resistance, it is suitable for strong acidic or alkaline sewage, seawater, industrial water,and more.
2. Strong adhesiveness
Because it is completely penetrated and adhered to the rugged surface of the steel pipe, it can increase the contact area.
3. Excellent adaptability to temperature and weather
Excellent abrasion resistance resulting from the formation of a solid expanded film, and its operating temperature range is from−45°C to 80°C,so the quality degradation never occurs in any natural environment.
4. Excellent workability
Uniform reactivity and high-speed curing facilitate post-processing and easy to apply in anemergency work area