Pre Insulated Pipe for Tunnel

This Pre Insulated Pipe for Tunnel is a pipe fitting with good thermal insulation effect used in tunnel application, which is used to save energy by preventing energy loss to the environment, thus saving costs. It is mainly composed of high-quality foamed polyurethane foam and internal and external steel pipes. The wall thickness of the inner steel pipe is generally above 3mm, and the wall thickness of the outer steel pipe is about 2mm, which is bonded by thermal curing. This structure can not only reduce the phenomena of water seepage, condensation and dew condensation in the tunnel, but also ensure the normal operation and use of the internal facilities in the tunnel.

Features

1. Good thermal insulation: The foamed polyurethane foam used in Pre Insulated Pipe for Tunnel is a polymer material with good thermal insulation performance, which can ensure the more stable performance of the tunnel thermal insulation pipe. In addition, we also add some flame retardants to the materials, which can reduce the spread of fire in case of fire and ensure the safe use of the tunnel.

2. Stable structure: the multi-layer structures are connected by thermal curing and bonding, which can ensure the strength and pressure resistance of the pipe, and also have good waterproof and thermal insulation performance.

3. Various sizes: The standard length of this insulation pipe is generally 2-6m, which is convenient for storage and transportation. But we can also customize it according to customer requirements to meet the needs of different occasions and processing sites.

4. Maintenance-free: due to the closed-cell structure, the insulation pipe will not be deformed due to water absorption, compression and sacks under normal use conditions, and can effectively resist ultraviolet rays during long-term use, avoiding problems such as excessive aging.

1. It is necessary to guarantee pipes are stable and safe without the possibility of falling. Noctilucent labels shall be used for the pipe piles to prevent collisions at night.

2. Both ends of the pipes should be temporarily sealed during storage to avoid foreign matters entering into the pipes.

3. Pre insulated pipe for the tunnel should be away from the corrosive mediums during storage to avoid chemical corrosion of the galvanized layer.

1. Before pipe joins, slag, rust, oil, water and so on shall be purged to ensure the quality of foam.

2. Galvanized sheets shall be used for the pipe joints with the same thickness as the straight pipe outer jackets.

3. River should be used to fix the pipe joint iron sheets and sealing strips shall be used in the overlapped areas between pipe joint sheets and straight pipes. Special circlips shall be used to fix the pipe joint sheets.

1. Galvanized iron outer jacket joint impact test

2. Galvanized iron outer jacket pipe body impact test

3. Dropping test of finished insulated pipe

4. Test pieces for the bond strength between the insulation and the outer jacket

1. The Development Orientation of the Integrated "Full Production Chain Model". our products have insulation pipe and insulation fittings.

2. On-site joint service

3. Product technical support

4. Pipeline leakage detection system, including impedance, fiber, and well. We ensure safe pipeline operation and reduce customer losses.

1. Own an independent transportation fleet

2. On-site professional service team

3. Provide on-site construction vehicles

4. There are 12 after-sales service offices nationwide

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