Prefabricated direct buried insulation pipe manufacturer

Prefabricated direct buried insulation pipe manufacturerDirect buried insulation pipe price, Dongying insulation pipe price

Work core tube
According to the technical requirements of the conveying medium, 20 # and Q235 steel are used respectively (in accordance with the standard GB/T8163-2008 for seamless steel pipes for conveying fluids), (in accordance with the standard SY/T5037-2008/GB/T9711.1-2008 for spiral seam submerged arc welded steel pipes for fluid conveying pipelines), and (in accordance with the standard GB/T3091-2008 for galvanized welded steel pipes or straight seam steel pipes for low-pressure fluid conveying); Made of random copolymer polypropylene materials (in accordance with the standard GB/T18742-2008 for random copolymer polypropylene pipes used in hot and cold water systems or central heating systems, i.e. "PPR water supply pipes"), etc.
The insulation layer is made of 60KG/M380KG/M3 rigid polyurethane foam. The high-pressure foaming machine is used to inject the original liquid of rigid polyurethane foam into the cavity formed between the working core tube and the outer sleeve at one time, which is known as the "tube in tube foaming process". It can fully fill the gap between the working core tube and the outer sleeve, and has a certain bonding strength, so that the steel pipe, the outer sleeve and the insulation layer form a solid whole. Polyurethane rigid foam material is a multi-functional thermal insulation material integrating waterproof, thermal insulation and heat insulation. It uses chlorine free foaming technology to produce a thermal reaction under a certain state, producing a rigid foam compound with a closed cell ratio of not less than 95%, a thickness of more than 20mm, a thermal conductivity of not less than 0.022w/mk, a decay rate of Vo=4491, an average bonding strength of not less than 40KPa, a density of not less than 55kg/m3, an adaptive ambient temperature of -50 ℃ 150 ℃, a compressive strength of not less than 0.3KPa, a tensile strength of not less than 500KPa, and a durability of not less than 25 years. The thermal conductivity of polyurethane foam is low in thermal insulation materials, so it can reduce the heat loss of materials to zui Low limit. Our company's waterproof and insulation engineering is strictly produced in accordance with the technical specifications for polyurethane rigid foam waterproof and insulation engineering, and the quality is reliable.
Prefabricated direct buried insulation pipe manufacturerDirect buried insulation pipe price, Dongying insulation pipe priceHigh density polyethylene jacket pipe is made of high-quality polyethylene as raw material and produced using advanced equipment and production processes. The pipe is generally divided into black or yellow (i.e. black jacket pipe, yellow jacket pipe), and its color and wall thickness can also be produced according to user requirements. Its basic materials and performance indicators are the same. Our company strictly controls the product quality when producing high-density polyethylene outer sleeves. After testing by the Petroleum Construction Technology Research Institute, the product's technical indicators have reached and exceeded the CJ/T114-2000 standard issued by the Ministry of Power. High density polyethylene outer sleeve has many characteristics such as high strength, impact resistance, environmental aging resistance, pre stress cracking resistance, corrosion resistance, low temperature resistance, easy welding, easy construction, strict sealing without leakage, etc; So it is widely used as an external protective layer for insulation of various types of hot and cold water, high and low temperature prefabricated buried pipelines.