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.
