Good Sealing Steel Plastic Composite Pipe For Underground Coal Mine
No Leakage
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
Polyethylene powder for coating meets the requirements of the
following table meet the requirements of the following table:
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 |
High pressure, good mechanical properties: the base pipe is
reinforced welded steel pipe or high pressure seamless steel pipe,
the inner and outer surface of polyethylene or epoxy resin
anticorrosive treatment, the perfect combination of steel pipe and
plastic pipe. Continued the advantages of steel pipe, its
mechanical strength is very high, impact, bending, pressure and
strength and other external forces have a strong bearing capacity.
Chemical corrosion resistance, weathering resistance and aging
resistance are very high: the coating can prevent metal oxidation,
and has the corrosion resistance of acid, alkali and salt. The
product has excellent anti-aging performance, and its service life
is much higher than other pipes. The product can be painted with
flange to ensure the anticorrosion effect of the whole pipeline.
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.
