Shandong Steel Sleeve Steel Directly Buried Steam Insulation Pipe Dongying Manufacturer

Dongying manufacturer of Shandong steel sleeve insulation pipe, direct buried insulation pipe, and steam insulation pipe

Product structure: Inner working steel pipe+polyurethane foam layer (or other insulation materials)+polyethylene outer protective pipe (including black jacket pipe and yellow jacket pipe, other outer protective pipe materials can also be selected). The three are closely connected.
The production sequence is as follows: fix the inner working steel pipe; Binding and fixing brackets (wooden brackets, plastic brackets, etc.) for the outer protective pipe on the working steel pipe; It is advisable to gradually insert the polyethylene outer protective pipe corresponding to the working steel pipe from one end, and reserve 15-20 cm of welding parts at both ends of the working pipe; Then fix the gap between the working steel pipes at both ends and the outer protective pipe (the gap is the thickness of the insulation layer) with a pre made welding flange; After fixing the flanges at both ends, calculate the required amount of polyurethane material and start the polyurethane foaming machine to pour the raw materials (the pouring density should be determined according to the actual situation, and the pouring amount should generally be between 50-70kg/m3, which can also be determined according to engineering design requirements). After pouring the material, remove the flanges fixed at both ends and wrap the exposed polyurethane foam layer on both ends with polyester film to protect the material from damage caused by external factors, and also facilitate on-site installation and welding in the later stage. After completion, the finished pipe is finished. section
Dongying manufacturer of Shandong steel sleeve insulation pipe, direct buried insulation pipe, and steam insulation pipeLow heat loss of the product
The thermal conductivity of prefabricated polyurethane buried insulation pipes is λ=0.0130.03kcal/m · h · oC, which is much lower than other commonly used pipeline insulation materials in the past. Its insulation effect is improved by 4-9 times. Its water absorption rate is very low, about 0.2kg/m2. The reason for low water absorption is that the closed cell rate of polyurethane foam is up to 92%.
Seat belt warning system
Prefabricated polyurethane buried insulation pipes can be equipped with leakage alarm lines according to customer requirements. Once a leakage occurs in a certain part of the pipeline, the accurate location and degree of leakage of the insulation pipeline can be displayed on the detection instrument through the transmission of the alarm line, so as to notify the leakage personnel to quickly deal with the leaking pipe section and ensure the safe operation of the heating network. Now we can also independently produce buried insulation pipes with warning lines, filling the gap of the previous lack of warning systems.