Product for coating the internal surface of a conduit, method and machine using same and conduit coated with same
US6632876B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1999 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Jun 9, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L58/1072
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a product for the internal coating of a pipeline component (1), in particular a metal pipeline component, comprising an internal wall (4) of high curvature. This product comprises a solid charge and a liquid. The liquid is a solution of an alkali metal silicate and the solid charge comprises sand, between 20 and 30% by mass of a binder which sets chemically by reaction with the liquid, and between 4 and 10% by mass of plasticizing adjuvants. The solid charge and the liquid are intended to be mixed (in 5) with a liquid/binder ratio by mass of between approximately 0.3 and 0.45.Application to pipelines for discharge of waste water made of spheroidal graphite cast iron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.