Internal Epoxy Resin Steel Plastic Composite Pipe Antistatic Corrosion Resistance
Description of Composite Steel Pipe with internal Epoxy Resin (EP) and Polyethylene (TPE) for external for Coal Mine
Mine pipe refers to a product specially developed for special underground environmental conditions, which has the advantages of flame retardant, antistatic, corrosion resistance, long service life and strong safety. It is mainly used in five systems: mine drainage pipe (KS), mine grouting pipe (KJ), mine positive pressure air pipe (KFZ), mine negative pressure air pipe (KFF), mine gas drainage pipe (KW).
Size:SP(W)-TEP(PE)-KM 295/ DN 48～1016MM
SP(H)-TEP(PE)-KM 295/ DN 48.3～1118MM
Pressure Grade
suitable for Pipeline’s pressure not more than 10 MPa
Carried Standard
Inspection Code for Safety Performance of Plastic Pipe Used in Coal Mine
The properties of epoxy resin powder for coating meet the requirements of the following table:
Properties of Epoxy Resin Powder
| Item | Requirement | Test standard |
| Density(g/cm2) | 1.3~1.5 | GB/T 1033 |
| Particle size distribution /% | 150um≤3；250um≤0.2 | GB/T 6554 |
| Nonvolatile content /% | ≥99.5 | GB/T 6554 |
| Horizontal liquidity /mm | 22~28 | GB/T 6554 |
| Gelation time /s | ≤120(200℃) | GB/T 6554 |
| Impact strength /(kgcm) | ≥50 | GB/T 1732 |
| Bending test /(¢2 mm) | pass | GB/T 6742 |
| Hygienic performance | Conform to GB/T 17219 |
Properties of Polyethylene powder
| Item | Requirement | Test standard |
| Density (g/cm2) | ＞0.91 | GB/T 1033 |
| Tensile strength /MPa | ＞9.80 | GB/T 1040 |
| Elongation at break /% | ＞300 | GB/T 1040 |
| Vicat softening point /℃ | ＞85 | GB/T 1633 |
| Nnonvolatile content /% | ＞99.5 | GB/T 2914 |
| Hygienic performance | Conform to GB/T 17219 |
Coating adhesion is strong: physical method is used for advanced treatment of the base pipe. The pretreatment meets Sa2.5 standard. Microcomputer is used for automatic preheating control and production. Coating adhesion is higher than national standard.
Connection modes are diversified and easy to construct: Flange connection, fast joint connection, socket connection, bimetal connection and butt welding connection can be adopted for the products. Connection modes are diversified and installation is convenient.
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