Pre-insulated Pipe

Polyurethane Foam Pre-insulated Steel Pipe

Polyurethane Foam Pre-insulated Steel Pipe
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Product Details

Polyurethane foam insulated steel pipe also referred as urethane foam pre-insulated piping, PU district heating pipesis the insulation pipe with rigid polyurethane foam plastic as its insulation material, made of inner carrier steel pipes, middle rigid polyurethane foam insulation layer and outer protective layer.

It offers high-performance systems capable of carrying liquids at controlled temperatures ranging from -350° F to +250° F with urethane foam uniformly fills the space between the carrier pipe and jacket, are used to transport of liquids and gases with temperatures ranging from -200°C to 250°C. 

structure of PU steel pipe

 

Carrier pipe (Inner pipe)

According to the design and customer requirements, seamless steel pipe, LSAW pipe and SSAW pipe can be the best choice for the carrier pipe of pre-insulated steel pipe. The material can be:

API 5L Gr. B X42 X46 X52 X56 X60.

ASTM A106/53 Gr. A /Gr. B / Gr. C

APL 5CT:J55, K55, N80, L80, C90, T95, P110

DIN 1629: St 37.0, St 44.0, St 52.0

DIN 17175: St35.8, St45.8, 17Mn4, 17Mn5, 15Mn5, 15Mo3, 13CrMo910

EN10240: S235JO, S235JR, S355JR, P265TR1, S355JRH...

(Other material manufactured by Customer’s Demand)


Insulation materials layer

Rigid polyurethane foam is injected into the cavity between the steel tube and the outer layer by high-pressure foaming machine. Polyurethane foam has good mechanical and adiabatic properties and can withstand high temperature to 120℃. It can withstand 180℃ through modification or combination with other heat insulation materials. The material can be : For keeping cold(-200℃∼120℃) Polyurethane foam; For keeping warm (120 ℃∼300℃) Polyurethane foam+ Silica (mineral wool)

 

Outer casing pipe

Prefabricated black or yellow polyethylene plastic pipe can protect the polyurethane insulation layer from mechanical damage, anti-corrosion, waterproof. The material can be HDPE PIPE (for underground/ above ground) or Glass fiber reinforced plastics pipe.

 

Standards:

EN/DIN 253: District heating pipes – Pre-insulated bonded pipe systems for directly buried hot water networks - Pipe assembly of steel service pipe, polyurethane thermal insulation and outer casing of polyethylene;

EN 448 District heating pipes – Pre-insulated bonded pipe systems for directly buried hot water networks - Fitting assemblies of steel service pipes, polyurethane thermal insulation and outer casing of polyethylene;

EN 488 District heating pipes – Pre-insulated bonded pipe systems for directly buried hot water networks - shut-off valves for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene;

EN 489 District heating pipes – Pre-insulated bonded pipe systems for directly buried hot water networks- Joint assembly for steel service pipes, polyurethane thermal insulation and outer casing of polyethylene.


Size; 

ERW/LSAW:Ф25-Ф630mm,length: 6m.

SSAW:Ф219mm-Ф3620mm, length:12m.

SMLS : 10.3-1020mm * 2mm-40mm(1/4”- 40”)

WT: 1.24mm - 60mm (SCH10-SCH160)

Length: 5.8M; 6M; 11.8 M, 12M or as customer's requirement

 

We supply and manufacture high quality pre-insulated steel pipes in accordance with EN/DIN 253 standards, specified delivery conditions and final customer specifications for for industrial and commercial applications. Special sizes of steel pipes and delivery issues can be further negotiated and we provide a wide range of solutions for purchasing departments to select alternative grades without specifying product specifications.


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