
Pre-insulated Pipes
The preinsulated
piping system consist of carbon steel as the core pipe with polyurethane foam insulation
and high density polyethylene (HDPE)
It is very durable and versatile system and
can cover virtually any diameter required by our clients.
Petrochemicals, Oil, Gas and Chilled Water
often require special treatment in order to maintain their necessary properties
and keep them fluid in case it is required. Our pipes have consistently met all
the challenges, quality of the product, value for
money and ensured minimum heat loss/gain which enabled our clients to low
operating costs even over very long distances.
Core Pipe: The carbon steel core pipe can be seamless
or welded (either longitudinally or spirally).
The pipes are conforming to ASTM A53 / API
5L grade B with beveled ends for welding joints or grooved ends for coupling
joints. Prior to insulation, the steel pipe is grit blasted and coated. The blasting
of pipes is done automatically using our blasting machine. The pipes are
blasted to near white metal finish. Then, the pipes are coated by airless spray
with self-priming Polyamide/Polyamine epoxy to a total DFT of 125 microns
nominal. This gives our pipes a rust free outer surface.
Insulation: The thermal insulation shall be rigid cellular 100% CFC-free Polyurethane foam, as per EN 253 factory-injected between core pipe and outer casing. The density of the foam can be between 32 kg/m³ and 60 kg/m³ nominal depending on the client requirement. Thermal conductivity coefficient ( l 50) shall be 0.030 W/m.K (0.208 BTU-in/hr.ft² . F) maximum at a mean temperature of 24* C (75* F). Typical operating temperature is between -17 to +120°C (0 to 250°F).