The company's leading products include fiberglass pipes, spiral steel pipes, TPEP/3PE anti-corrosion pipes, plastic coated composite pipes, spray wrapped insulation pipes, prefabricated buried polyurethane insulation pipes, steel sheathed steel steam insulation pipes, etc.
MORE +At the beginning of thirty years, our heart remained unchanged, we focused on research and development, and for thirty years, our craftsmanship remained steadfast, specializing in pipe manufacturing.
MORE +
Hotline:+86 19806232669
PRODUCTS
Hotline
+86 19806232669Shandong Shengbao Pipeline Technology Co., Ltd
Mobile: +86 19806232669
Landline:+86 0536-4930888
E-mail: shengbaojt@126.com
Website: www.sdshengbaogd.com
Company Address: West End of Jinshan Street, Xin'an Street, Anqiu City, Weifang City, Shandong Province
Shengbao people uphold the original intention, drive development through innovation, and take integrity as the rudder. Let's set sail side by side and paint a high-quality future together!
Shandong Shengbao Pipeline Technology Co., Ltd.
West End of Jinshan Street, Xin'an Street, Anqiu, Shandong
60 second response time
30 minute response
24-hour plan
Introduction
Our company currently has one advanced continuous and intermittent spray winding production line in China, producing insulation pipes with diameters ranging from 529 to 1620. The spraying system uses a Graco high-pressure spray foaming machine, and the winding system uses a Jinhu extruder. The product quality fully meets or exceeds the national standard GB/T34611-2017.
Product structure diagram

Spray wrapping production process

Advantage
01The spray wrapping process can reasonably determine the thickness of the insulation layer and outer protective layer based on the temperature of the conveying medium, reducing unnecessary material waste.
02The spray wrapping production line has a compact structure, fewer links, and reduces production costs.
03The uniform spraying density ensures excellent insulation effect of the insulation pipe.
04喷涂生产方式有效的保证了工作钢管与外护层的同心度,大大提升了产品品质
Images
Customized solutions, customized products
Precision Manufacturing
Excellent material selection
Years of experience
Stable and durable
price concessions
Parameter
Technical indicators of outer protective layer
Name | Indicator requirements |
density | 940-960kg/m³ |
thermal conductivity | ≤0.43[W/(mk)] |
Carbon black content | 2.5%±0.5% |
tensile yield strength | ≥19MPa |
elongation at break | ≥450% |
environmental stress crack resistance | ≥300h |
Long term mechanical performance | ≥2000h |
Technical indicators of insulation layer
Name | Indicator requirements |
density | ≥260kg/m³ |
radial crushing strength | ≥0.3MPa |
close cell content | ≥90% |
Water absorption rate | ≤10% |
≤0.033[W/(m ·k)] | |
Long term temperature resistance(Continuous operation for 30 years) | 120℃ |
Thickness of insulation and outer protective layer
Steel pipe nominal diameter DN(mm) | insulation thickness(mm) | Outer diameter of protective tube D(mm) | Minimum wall thickness of outer protective layer(mm) |
300 | 30~50 | 393~433 | 4.0 |
350 | 30~50 | 445~485 | 4.0 |
400 | 30~60 | 494~544 | 4.0 |
450 | 30~60 | 547~607 | 4.5 |
500 | 30~60 | 598~658 | 4.5 |
600 | 30~60 | 700~760 | 5.0 |
700 | 30~60 | 790~852 | 5.0 |
800 | 30~60 | 891~951 | 5.5 |
900 | 30~60 | 992~1052 | 6.0 |
1000 | 30~60 | 1093~1153 | 6.5 |
1100 | 30~60 | 1194~1254 | 7.0 |
1200 | 40~100 | 1316~1436 | 8.0 |
1400 | 50~120 | 1538~1678 | 9.0 |
Test equipment


Engineering


Application
The application in water conservancy engineering has significant advantages, and its lightweight, high strength, corrosion resistance and other characteristics make it an indispensable and important material in water conservancy engineering.
Thanks to its lightweight, high strength, corrosion resistance, easy installation, and long lifespan. The ideal choice for urban water supply, drainage, sewage treatment and other systems has significantly improved the construction efficiency and economic benefits of municipal infrastructure.
Due to its lightweight, corrosion-resistant, and easy installation characteristics, it has been widely used in agricultural irrigation systems, effectively improving irrigation efficiency and reducing maintenance costs
Widely and significantly used in environmental governance, its excellent corrosion resistance, lightweight and high strength, and convenient installation make it a key material for handling corrosive media, improving governance efficiency, and reducing maintenance costs
It can resist corrosive components in thermal media, reduce maintenance costs, and its good insulation performance also helps to reduce heat loss.