Name: Insulated Steel Pipe
Brand: Shengtian Group
Availability: InStock
Rating: 5 (1 reviews)

Description

Insulated steel pipe

　　Insulation steel pipes are widely used in liquid and gas transmission pipe networks, chemical pipe insulation projects in petroleum, chemical, central heating and heating networks, central air-conditioning ventilation pipes, and municipal engineering. High-temperature prefabricated direct-buried thermal Insulation steel pipe is a direct-buried prefabricated thermal Insulation steel pipe with good thermal insulation performance, safety and reliability, and low construction cost.

Composition of Insulated Steel Pipe

　　Part 1: Carrier pipe (Inside): Stainless steel or Carbon steel

　　Part 2: Insulating layer (Medium): Polyurethane foam (PUR Form) (High insulation qualities compared to mass and volume)

　　Part 3: Protective jacket (Outside casing): Plastic or steel (Polyethylene (PEH), High Density Polyethylene (HDPE), Galvanized, Aluminum etc)

　　Pos: The choice of carrier pipe, foam type and foam thickness, as well as the material for the jacket, is made by the customer, who can also choose to supply carrier pipes for the project.

Product Description

Materials
Item	Material	Notes
Service pipe/Carrier pipe	Steel Pipe	API 5L PSL-1: GR.B X42, X46, X52, X60, X70 API 5L PLS-2: ISO3183-L245, L290, L320, L360, L415, L485
Insulation	Polyurethane foam (PUR) Nominal Density of 60¹+15-15 kg/m³	Compressive Strength: ≥ 0.300 Mpa
		Thermal Conductivity: ≤ 0.029 W/m·K@50ºC
		Closed Cell Content: ≥90%
		Water Absorption: <5%
Insulation Jacket	High-density polyethylene (HDPE)	As technical parameter

Description	polyurethane thermal insulation steel pipe
Wall thickness	0.5mm-16mm
Length	1m-12m or customized
Outer Diameter	0.405-80 inch or 10.3mm - 2032mm
Insulation	PUR Foam
Operating temperature	Up to 140ºC
Standard & Grades	API 5L PSL1/ PSL2, ASTM A53,ASTM A252,GB/T9711.1,GB/T3091,SY/T 5037-2012,DIN1626,EN10219,EN10217
Ends	30~35°
Quality control	100% X-Ray inspection/ 100%X 100% Hydraulic Pressure test/ 100% 100% Ultrasonic inspection / 100%
Lining	Epoxy , cement motar, and according to customers requirement
Operating pressure	<1.6Mpa (Equivalent to PN 25? 25bar to be confirmed)
Laid way	Buried, overhead, trench
Insulation material	Fluoride-Free water foamed rigid polyurethane foam material (foam density: 60kg/m3-80kg/m³)
Inner surface tension of the high density polyethylene pipe	≥50dy/cm

Application of Insulated Steel Pipe

　　1. Municipal centralized heating: The main pipe material for urban hot water pipelines (50 ℃ -120 ℃), accounting for the vast majority of market demand, is used for long-distance thermal energy transmission from heat source stations to end users.

　　2. Industrial high-temperature steam: High temperature steam transportation in power plants and chemical plants (up to 350 ℃, 2.5MPa) mainly uses steel sleeve steel structures to prevent insulation layer failure.

　　3. Petrochemical and oil and gas: Insulation and anti condensation of crude oil, hot oil, natural gas, and LNG transmission pipelines to adapt to complex soil corrosion environments.

　　4. Refrigeration and insulation engineering: Central air conditioning refrigerant pipes, cold storage pipelines, and low-temperature liquid transportation (-50 ℃ to -90 ℃) to prevent loss of cooling capacity and condensation.

　　5. Special scenarios: geothermal development, utilization of nuclear waste heat, coal mine heating, and special laying projects across rivers/permafrost areas. ‌‌