Zibo polyurethane buried pipe, Shandong insulation pipe manufacturer

Zibo polyurethane buried pipe, Shandong insulation pipe manufacturer　

The relevant standards for the standard parameters of polyurethane foam thermal insulation steel pipes shall be in accordance with CJ/T114-2000 High Density Polyethylene External Protection Pipe Polyurethane Foam Plastic Prefabricated Directly Buried Thermal Insulation Pipe or EN253 Integral Prefabricated Thermal Insulation System for Underground Heat Pipe Network, Thermal Insulation Pipe Composed of Working Steel Pipe, Polyurethane Thermal Insulation Layer and Polyethylene Outer Pipe Seamless steel pipe shall be in accordance with GB8163 Seamless Steel Pipe for Fluid TransmissionThe standard spiral steel pipe shall comply with GB/T 9711.1-1997 "Technical Conditions for Delivery of Steel Pipes for Petroleum and Natural Gas Industries" and the standard outer sleeve shall comply with GB13018-91 "Extreme Deviation of Outer Diameter and Wall Thickness of Polyethylene (PE) Pipes". The technical parameters of the prefabricated buried insulation pipe are as follows: axial shear strength: ≥ 0.12MPa (23 ± 2 ℃), continuous operating temperature: 140 ℃ Max peak operating temperature: 150 ℃ Max service life: ≥ 30 years (the service life of the insulation layer and outer protective layer is related to water quality). The net zone length of the pipe end shall be 200mm, and the pipe diameter range shall be DN20-DN1200. The service steel pipe shall comply with the standard GB/T8163-1999, and seamless steel pipes shall be used for pipe diameters of DN150 and below.

Spiral welded pipes are used for pipe diameters of DN200 and above, in accordance with the standard SY/T5037-2000 or GB/T9711.1. Polyurethane insulation pipe temperature layer technical parameters: average pore size: ≤ 0.5mm, closed cell rate ≥ 88%, density ≥ 60kg/m3 at any position, compressive strength ≥ 0.3MPa (under 10% deformation conditions), water absorption rate: ≤ 10% (boiling water at 100 ℃ for 90 minutes), low-pressure high-density polyethylene outer protective pipe technical parameters: density ≥ 950kg/m3 (20 ℃), carbon black content: 2.5% ± 0.5% (mass percentage), thermal conductivity: 0.43W/(m. ℃), thermal expansion coefficient: 18010-6 (1 ℃), melt polyurethane insulation pipe index: 0.50~0.70g (MFI 190 ℃/5kg), tensile strength: ≥ 19MPa, fracture strength Elongation rate: ≥ 350%, resistance to environmental stress cracking: ≥ 200h longitudinal shrinkage rate.

Shandong Dacheng Anti corrosion and Insulation Pipe Engineering Co., Ltd. is a company with more than 20 years of history, specializing in the production of polyurethane insulation pipes, buried insulation pipes, polyethylene jacket pipes, steel sleeve insulation pipes, etc. It is committed to researching various insulation pipes needed for pipeline insulation, with guaranteed quality.

Zibo polyurethane buried pipe, Shandong insulation pipe manufacturer