Steel clad steel straight buried thermal insulation pipe has a reasonable structural distribution.
The steel clad steel straight-buried thermal insulation pipe, also known as the prefabricated straight-buried steel clad high-temperature steam thermal insulation pipeline, is a new laying technology for underground straight-buried pipelines. It utilizes advanced high-temperature centrifugal glass wool for insulation and glass fiber reinforced plastic wrapping technology for the outer sheath. The company produces a series of new-generation prefabricated straight-buried steel clad steam thermal insulation pipelines suitable for transporting steam or other heat mediums at pressures below 2.5 MPa and temperatures up to 350°C.
Product structure format
Pre-fabricated buried steam insulation pipes (externally sliding) feature the following structural components: core pipe (working steel pipe), high-temperature-resistant silicone paint, sliding bracket, high-temperature glass wool, aluminum foil reflective layer, air insulation layer, outer steel pipe, and epoxy coal tar paint anti-corrosion coating.
Technical Specifications:
Working Steel Pipe
Steel Pipe Types: Generally, seamless steel pipes are used for pipe diameters of DN150 and below, while spiral-welded pipes are used for diameters of DN200 and above.
Specifications: DN20 - DN1020
Material: Seamless tube is made of 20# steel, spiral-welded pipe is Q235B.
Execution Standards: Seamless steel pipes are in accordance with GB/T8163-1999 standard, spiral submerged arc welded steel pipes are in compliance with SY/T5037-2000 standard and GB/T9711.1 standard.
Steel casing
Steel Pipe Type: Spiral Welded Pipe
Material: Q235B
Standard: Spiral Welded Pipe SYT5037-2000
Centrifugal glass wool
Density: ≥ 48 kg/m³
Average Fiber Diameter: ≤8μm
Impurity Content: ≤0.3%
Moisture Content: ≤1%
Non-flammable: Grade A
Corrosiveness: None
Thermal Conductivity (at 705℃): ≤0.042 W/(m·℃)
Standard of Execution: GB13350
Fiber-reinforced Glass Reinforced Plastic
Process Technology: Fiber Reinforced Thermosetting Resin Pipe Wrapping Technology
Enhanced Materials: Unalkaline, Untwisted Glass Fiber
Resin: Oxybenzene or meta-benene unsaturated polyester resin
Reference Standards: JC552-94, JC/T838-1998
Resin Temperature Resistance: Para-Phenylene Type up to 70°C, Meta-Phenylene Type up to 100°C
Glass Fiber Reinforced Pipe Sheath Density: 1700~2100 kg/m³
Torsional modulus of elasticity: 12,000~22,000 MPa
Axial bending and tensile modulus: 6000~11000 MPa
Poisson's Ratio: 0.25~0.4
Thermal Expansion Coefficient: 23.010^-6 (per °C)
Pre-fabricated steel sleeve steel thermal insulation pipeline node treatment:
Our company offers a variety of specifications for directly buried thermal insulation pipelines and can produce related accessories such as connecting parts, installation attachments, as well as internal fixings, drainage systems, tees, elbows, and venting systems used in the buried pipelines.
