Prefabricated direct buried polyurethane insulation pipe

Summary: High-density polyethylene shell prefabricated straight buried pipe is divided into three layers from inside to outside

The first layer: working steel pipe layer, according to the design and customer requirements, generally use seamless pipe (BG8163-2008) spiral welded pipe (GB9711.1-2001; SY/T5037-2000) and straight seam welded pipe (BG3092-93). After the surface of the steel pipe is treated by advanced shot blasting and descaling process, the rust removal grade of the steel pipe can reach Sa21-2 grade in GB8923-1988 standard, and the surface roughness can be GB6060.5-88 standard R=12.5 micron.

The second layer: a polyurethane insulation layer, which is formed by injecting a rigid polyurethane foam raw material into a cavity formed between the steel pipe and the outer sheath by a high-pressure foaming machine. That is commonly known as the "tube tube foaming process." The layer of protection is heat preservation, the second is waterproof, and the third is to support the weight of the heat network. When the temperature of the conveying medium is: -50°C-120°C, the rigid polyurethane foam is used as the insulation layer. When the temperature of the conveying medium is: -50°C-150°C, the rigid polyurethane is used. The foam is made of insulation.

The third layer: high-density polyethylene protective layer, pre-formed into a certain wall thickness of black (yellow) plastic pipe, after the corona process treatment. Its role is to protect the polyurethane insulation layer from mechanical hard objects, and the second is anti-corrosion and waterproof.

Product main performance indicators

High-density polyethylene prefabricated direct buried pipe application

It is suitable for heat preservation and cold preservation of various media in the range of -50°---180°C. It is widely used in thermal insulation and cold preservation projects in urban central heating, cold storage, warm rooms, coal mines, oil, ports, and chemical industries.

High-density polyethylene prefabricated straight buried pipe product specifications

Nominal diameter DN steel pipe outer diameter × wall thickness ordinary series 1PE outer casing outer diameter × wall thickness insulation layer thickness 2532×3.090×2.226.83242×3.0110×2.231.84048×3.0110×2.228.85057×3.0140×3.038.57076×4.0140× 3.029.08089×4.5160×3.232.3100108×4.5180×3.532.5125133×4.5200×3.530.0150159×4.5250×4.541.0200219×6.0315×5.542.5250273×6.0365×6.539.5300325×7.0420×7.040.5350377×8.0500×7.853. 7400426×8.0550×8.853.2450478×7.0600×8.852.2500529×9.0655×9.853.2600630×10.0760×11.054.0700720×12.0860×12.058.0800820×12.0960×12.058.0900920×12.01050×13.052.010001020×14.01150×14.053.011001120× 14.01255×15.052.512001220×14.01370×16.059.0 Nominal diameter DN steel pipe outer diameter×wall thickness ordinary series 2PE outer casing outer diameter×wall thickness insulation layer thickness 2532×3.0110×3.036.03242×3.0140×3.046.04048×3.0140×3.043 .05057×3.0160×3.248.37076×4.0160×3.238.88089×4.5180×3.542.0100108×4.5200×3.554.0125133×4.5250×4.572.5150133×4.5315×5.566.5200159×4.5365×6.566.5250219×6.0420×7.079.7300273 ×6.0500×7.877.7350325×7.0550×8.8104 .7400377×8.0655×9.8119.9450426×7.0740×11.1104.5500478×7.0760×11.0103.3600529×9.0860×12.0108.0700630×10.0960×12.0102.0800720×12.01050×13.0101.0900820×12.01150×14.0103.510001020×14.01255×14.0115.011001120 ×14.01330×15.0103.512001220×14.01455×14.0103.5

Remarks: The type of working steel pipe in the table is adjusted according to different design and user requirements;

Insulation and protective layer thicknesses can also be produced according to different designs and user requirements.

Shandong Yitong Energy Saving Co., Ltd. is a professional manufacturer of polyurethane prefabricated direct buried and empty rack pipes integrating scientific research, development, manufacture and sales. The company has passed ISO9001 quality system certification, IS014001 environmental system certification, OHSAS18001 occupational and health safety management system certification, production license, quality supervision and inspection certificate. The company's products have repeatedly passed the quality inspection and testing of the department through the national authority and the corresponding test report. The factory covers an area of 55,000 square meters, with 3 high-density polyethylene outer tube production lines, 2 sets of automatic plastic sleeve insulation production lines, 5 sets of high and low foaming machines and on-site foaming machines, and a specialized steel pipe anti-corrosion production line. One production line, one set of steel pipe shot blasting equipment. Shandong Yitong Energy Saving Co., Ltd. always adheres to scientific and technological innovation and develops polyurethane prefabricated direct buried insulation pipes that meet industry standards or exceed industry standards. The product has good waterproof, shockproof, anti-pressure, heat insulation, corrosion resistance, convenient construction and long service life. It is widely used in heating, fire, chemical, electric power, oil transportation, water delivery, and has a service life of up to 30 years.