grp pipe,smc tank,grp grating,grp vessel,cable tray
GRP pipe & FRP pipe
The range of pipes dimensions and characteristics offered is wide and able to meet many different application's requirements. They can be produced in any diameter from 25 mm (2") to 3000 mm (120"). Standard lengths are 6 and 12 meters however customized lengths are available on request.
Pipes are manufactured using the discontinuous dual helix filament winding process on computer controlled machines. By adjusting the relative speed of mandrel rotation and glass distribution head movement, helical reinforced layers can be wound with different angles. The angle with the axis of the pipe can vary between 45° and 88°. The inside diameter of the finished pipe is defined by the mandrel outside diameter and the designed wall thickness is achieved by repeated winding passes. In such a way the outside diameter of pipe (OD) is determined by the pipe wall thickness. In order to increase the pipe stiffness, especially on large diameter pipes, silica sand can be added to parallel layers of the mechanical wall.
Main characteristics of this process are the following:
The Bell and Spigot joint is an integral part of the pipe
The cross winding allows enough flexibility in the design to specify pipe of any axial and hoop strength
The axial strength is normally higher than that of pipes produced with other processes
Pipe stiffness is not related to joint stiffness which in any case is higher than the pipe stiffness and guarantees a very stable joint practically without deformation
The pipe could be made with our without silica sand depending on the load conditions
Nominal Pressure Classes
Pipes and fittings are classified according to nominal pressure. Standard pressure classes are: 4, 6, 10, 16, 20 bars. Intermediate or higher-pressure classes can be provided depending on the design parameters and conditions.
Pipe Stiffness Classes
Pipes are also classified according to specific pipe stiffness. Standard stiffness classes are: 1250, 2500, 5000 and 10000 Pa. Intermediate or higher stiffness classes are available on request or depending on the design conditions.
Hengrun Group Co.,LTD was established in May 2001, with RMB 110m registered capital and 2100 mu (1mu = 666.7m2) occupied area. Hengrun Group Co., LTD is a modern high-tech enterprise consists of "Hengrun Group", the headquarter, and 8 associated branches distributed across the country: Hengrun Anti-corrosion & Installation company; Beijing Environmental company; Shenzhen Zhuocheng pipe company; and etc. The headquarter "Hengrun Group", located in GRP industrial zone Zaoqiang Hebei Province, has been leading the expansion of application of GRP pipe market in China for years. Our company is mainly engaged in manufacturing Prestressed Concrete Cylinder Pipe (PCCP), Prestressed Concrete Pipe (PCP), GRP Prestressed Concrete Cylinder Pipe (GPCCP/FPCCP), GRP Concrete Bar-wrapped Cylinder Pipe (GCBCP/FCBCP), Fiber Reinforced Prestressed Concrete Cylinder composite Pipe, High-performance Fiber Multi-Types Composite Pipe, GRP Pipe and etc, and researching, developing and producing associated equipments. For years of efforts, Hengrun Group Co., LTD has accumulated RMB 750m total assets, annual sale of RMB 5.5b, and 1,500 employees including 160 technicians that are experts, and one academician from Chinese Engineering Academy, Mr.Shanyi Du, as professional consulting for the company.
As a leader in GRP pipe industry, Hengrun has realized the market is significantly tied to the product quality and its economic benefits to the consumer. In order to do better, the company is planning several projects (Hebei Composite Material Research Institute, Hebei Multi-types Composite Material Engineering and Technology Center, and National Public Service Platform of Composite Material Industrialization) cooperating with Wuhan University of Technology, East China University of Science and Technology, Harbin Institute of Technology, Suzhou Concrete Technology Academy, and Beijing University of Aeronautics & Astronautics to optimize its product value.
Based on broad experience, Hengrun now has successfully transformed into a high-tech company with diversifying products from its original single product survival mode, obtaining 4 patents for invention and 30 patents for utility model. Our products are widely applied to water, electrical, municipal, oceanic, chemical projects and oil construction, which export all over the world. Such as large and efficient Active Carbon Filters, Fiber-enhanced Composite material Pipe with high performance, GRP Pipe-jacking without excavation, fiber-enhanced Prestressed Concrete Cylinder Pipe and etc. The PCCP and Fiber-enhanced Composite material Pipe projects cover a total area of 1100 mu, 1,800,000 m2 construction area with 12 production lines, that capable to produce 3m in diameter about 1,000 kilometers annually, or say creates nearly RMB 3 billing production value each year; The GRP project (under construction) has a total area of 400 mu with 18 production lines that capable to make RMB 2 billion annuall