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DONGRUI TIANHE

Provide Premium, Eco-friendly & Safe Conveyance Equipment

Over 40 specifications for coal mine gas, underground ventilation, water conveyance, irrigation & gas transmission. Customized solutions available.

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DONGRUI TIANHE

Technology-powered, quality controllable.

Over 40 specifications for coal mine gas, underground ventilation, water conveyance, irrigation & gas transmission. Customized solutions available.

Learn More →

DONGRUI TIANHE

End-to-end tracking service, efficient response to needs

Over 40 specifications for coal mine gas, underground ventilation, water conveyance, irrigation & gas transmission. Customized solutions available.

Learn More →

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About Us

20 Years of Dedication | Premium, Eco-safe Conveyance

Hebei Dongrui Tianhe Plastic Products Co., Ltd.

Hebei Dongrui Tianhe Plastics Products Co., Ltd. is a modern plastics enterprise integrating scientific research, design, production, and technical services.We specialize in the production and sale of gas drainage sealing devices, fiber-reinforced PE pipes, sealing tubes, gas drainage pipes, mining-grade PE pipes, steel wire mesh-reinforced PE pipes, PVC gas pipes, mining pipes, fiber-reinforced polyethylene pipelines, and other related products.Relying on stable quality and professional services, the company has become a preferred partner in fields such as coal mining, urban development, gas transmission, and agricultural production.

Company

Qualifications

Culture

15 Yr

Production and R&D experience

29000 ㎡

The factory covers an area

6000 Ton

PE pipes produced annually

40 Mt

PVC pipes produced annually

HOT PRODUCTS

We specialize in the production and sale of gas drainage sealing devices, fiber-reinforced PE pipes, sealing tubes, gas drainage pipes, mining-grade PE pipes, steel wire mesh-reinforced PE pipes, PVC gas pipes, mining pipes, fiber-reinforced polyethylene pipelines, and other related products.

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Product

GAS Gas Connection

The extraction-and-connection hole device is a new type of rapid-connect grid-connection technology—a multi-hole grid-connection assembly process. This device integrates multiple functions, including multi-hole grid connection, centralized monitoring of gas flow and concentration, thorough removal of wastewater and waste residues, and efficient gas collection and grid connection to the main pipeline—all in a quick-connect grid-connection system.

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FKSW Grouting-type Sealing Device for Gas Drainage

The grouting-type (pressurized) sealing device for gas drainage is used for gas extraction and hole sealing. It employs a grouting pump to inject grout under pressure, first filling the bags at both ends of the sealing device. Once these end bags expand, the grout then seals the gap in the middle, thereby achieving multi-layer pressurized sealing. Gas is extracted through the drainage pipeline.

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PVCGR Polyvinyl Chloride Gas Extraction Connecting Hose for Underground Coal Mines

The connecting hose used for coal mine gas drainage is primarily made from polyvinyl chloride, with elastic spiral steel wires embedded in the hose wall to optimize its performance. It is particularly well-suited for use in underground coal mine gas drainage systems, borehole sealing and external connections, and other related applications. This connecting hose is manufactured through an integrated extrusion process that combines polyvinyl chloride resin and elastic steel wires.

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GAS Gas Pre-arrangement Pipe

Gas pre-drainage pipes are primarily used in coal mines to prevent gas outbursts. They are designed to pre-drain gas or other harmful gases from coal seams, effectively reducing the likelihood of sudden gas accidents and significantly enhancing mine safety.

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UPVC Polyvinyl Chloride Gas Extraction Pipe for Coal Mines

UPVC (polyvinyl chloride) pipes are also one of the options for gas drainage pipelines in coal mines. Compared with steel pipes and glass fiber reinforced plastic pipes, UPVC gas pipes offer advantages such as flame retardancy, antistatic properties, light weight, excellent toughness, and good corrosion resistance.

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PE polyethylene pipe for coal mines

Polyethylene (HDPE) pipes, with their outstanding comprehensive performance, are increasingly being widely adopted. The trend of "replacing steel with plastics" has become a major driving force behind societal development, and polyethylene pipes for coal mines represent one of their new application areas.

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SSPE Steel Wire Mesh Reinforced Polyethylene Composite Pipe

Steel wire mesh-reinforced polyethylene composite pipe is a high-performance pipe material made by co-extruding a specialized hot-melt adhesive between a wound steel wire mesh intermediate layer and inner and outer polyethylene plastic layers.

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FRPE Fiber-Reinforced Polyethylene Pipe for Underground Coal Mines

Our company has developed and manufactured a patented product—the glass-fiber-reinforced high-pressure composite pipe. This high-pressure composite pipe employs a four-layer winding process with reinforcing layers, offering both highly efficient and stable corrosion resistance and significantly enhanced pressure-bearing capacity. It combines the excellent corrosion resistance and leak-proof properties of plastic pipes with the high-pressure resistance of steel pipes, while also being lightweight and easy to transport and install.

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Drain pipe

Polyethylene (PE) pipes for underground coal mines are manufactured by co-extrusion using polyethylene as the primary raw material, blended with high-quality conductive carbon black and flame retardants, and processed through a proprietary technology. The product quality meets the requirements of the national standard GB/T13663-2003 for polyethylene pipes used in water supply and the industry standard MT558.1-2005 for polyethylene pipes used in underground coal mines. Their safety performance complies with the requirements of MT181-88.

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PVC pipe

The connecting hose used for coal mine gas drainage is primarily made from polyvinyl chloride (PVC) and features embedded elastic steel wires in its wall. It is particularly well-suited for applications such as underground coal mine gas drainage systems, borehole sealing, and external connections. This connecting hose is manufactured through an integrated extrusion process that combines PVC resin with elastic steel wires. As a product specifically designed to meet the complex conditions found underground in coal mines, it offers significant advantages over other products.

PE pipe for water supply and drainage

Polyethylene (PE) material, with its high strength, corrosion resistance, and non-toxic properties, is widely used in the manufacturing of water supply and drainage pipes. Since it does not rust, it is an ideal replacement for conventional iron water pipes. PE water supply pipes comply with the national product standard: GB/T 13663-2000 "Polyethylene (PE) Pipes for Water Supply."

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PVC pipe

The polyvinyl chloride (PVC) pipe for mining applications is manufactured through a single-step extrusion process, using polyvinyl chloride as the primary raw material mixed with high-quality conductive carbon black and flame-retardant additives. Employing a novel formulation and process technology, along with lightweight, high-strength, flame-retardant, and antistatic materials, the product quality meets the requirements of the national standard for PVC pipes used in coal mine gas drainage. It satisfies and even exceeds the standards set forth in the national coal industry standards MT181—88, "Safety Performance Specifications for Plastic Pipes Used in Coal Mine Underground," and MT558.2-2005, "Safety Performance Testing Specifications for Plastic Pipe Materials Used in Coal Mine Underground."

Technical strength

Nearly 20 years in piping: trusted partner for coal mining, urban construction, gas transmission & agricultural production, backed by premium quality & professional service.

Quality Control

Coal Mine Safety & Drinking Water Standard Certifications

ISO9001 Quality Management System Certification

3 National Patents for Optimized Product Structure

Customization

Experienced engineers for your customized product needs.

29,000 m² factory area with complete production & office facilities

Two large computer-controlled automatic coating production lines

R&D capabilities

Deeply collaborate with the Chinese Academy of Coal Science to integrate research resources.

Polymer crosslinked conductive matrix production technology, achieving flame-retardant and antistatic properties in the product.

Build a product portfolio that supports multiple specifications and is adaptable to all scenarios.

SERVICE

Innovation-driven, service-oriented

Multi-stage quality inspection from raw material testing to finished product delivery, ensuring compliance with core certifications including Coal Mine Safety and Drinking Water Standards.Nationwide service network, enabling rapid response to customer needs and timely resolution of technical issues & after-sales demands during product use.

40 +

Product Specifications

300 +

Customer Service

30 +

Exporting Countries

BLOG & EVENT

Perceive cutting-edge changes and gain real-time insights into industry needs.

2023-05-11

Requirements for Construction Conditions of PVC Mine Sealing Tubes

The detailed address for the construction project specifies that the soil is loose. After all, in complex areas such as mountainous regions, there are often many sharp stones that can easily puncture PVC mine sealing pipes during work. Therefore, it is essential to account for the loose geological conditions.

2023-05-11

Does everyone know what fiber-reinforced polyethylene pipes are like?

Fiber-reinforced polyethylene pipes are a new type of material characterized by excellent flexibility, strong corrosion resistance, light weight, and superior impact resistance. They can be joined using hot-melt butt fusion and electrofusion techniques, seamlessly fusing the pipe and fittings into a single unit. This results in a system that is safe, reliable, and cost-effective, and has been rapidly gaining popularity in engineering applications.

2023-05-11

What are some common misconceptions when purchasing fiber-reinforced polyethylene pipes?

Fiber-reinforced polyethylene pipes have become one of the mainstream pipe products on the market and are attracting increasing attention and preference from consumers. Choosing high-quality, affordable fiber-reinforced polyethylene pipes has become a significant challenge in the market. As more people gain a better understanding of fiber-reinforced polyethylene pipes, many now know how to make the right choice.

2023-01-07

What are the performance and characteristics of fiber-reinforced polyethylene pipes? How should they be installed?

The combination of fiber and polyethylene creates a multi-layer protection for pipelines. Experiments have shown that pipes with double- or multi-layer structures exhibit significantly superior overall performance compared to those with single-layer structures. Fiber-reinforced PE spiral-wound pipes belong to the multi-layer structure category; when subjected to external impacts and compression, they are less likely to fracture, deform, or rupture, thereby providing multi-layer protection for the pipeline.

2022-12-28

Some common sense about PVC pipes—let the sealing pipe manufacturer clarify for you!

PVC pipes have excellent mechanical properties and outstanding corrosion resistance. They are lightweight, easy to install, and require no maintenance during use. In contrast, steel sewer pipes used in public works are prone to corrosion during operation, necessitating frequent painting and resulting in high maintenance costs.

2022-12-19

PVC Pipe Features: A Manufacturer of Sealed-End Pipes Explains for You

Pipe manufacturers specializing in sealing pipes believe that PVC pipes can be categorized into soft PVC and rigid PVC. Among these, rigid PVC accounts for approximately two-thirds of the market, while soft PVC accounts for about one-third. Soft PVC pipes are typically used for flooring, ceilings, and leather surfaces. However, since soft PVC contains plasticizers—this is precisely what distinguishes soft PVC from rigid PVC—it exhibits poor physical performance (for example, it’s unsuitable for water pipes that need to withstand certain water pressures). Consequently, its application scope is rather limited. Pipe manufacturers specializing in sealing pipes point out that rigid PVC does not contain plasticizers, is easy to mold, boasts excellent physical properties, and thus holds great potential for development and application. During the production of PVC materials, various additives such as stabilizers and plasticizers must be incorporated. Pipe manufacturers specializing in sealing pipes highlight the following advantages of PVC pipes: 1. Good tensile and compressive strength—but its flexibility is inferior to that of other plastic pipes. 2. Low fluid resistance in PVC pipes: The walls of PVC pipes are extremely smooth, resulting in virtually no fluid resistance. Its roughness coefficient is only 0.009. Its water-carrying capacity is 20% higher than that of cast iron pipes of the same diameter and 40% higher than that of concrete pipes. 3. Excellent corrosion and chemical resistance: PVC pipes exhibit outstanding resistance to acids, alkalis, and corrosive substances; they are unaffected by moisture or changes in soil pH, eliminating the need for anti-corrosion treatment during pipeline installation. 4. Good

2022-12-08

Some key points about PE pipes for mining—told to you by a manufacturer of sealing pipes.

The manufacturer of sealing and grouting pipes believes that mining-grade PE pipes are suitable for coal mine gas drainage, water supply and drainage, and shotcrete applications. Mining-grade PE pipes are gas drainage pipes used underground in coal mines; they are extruded from polyethylene as the primary raw material, with appropriate additives incorporated during the process. These pipes feature flame retardancy, antistatic properties, high strength, corrosion resistance, and flexibility. They are used for gas drainage, positive-pressure ventilation, negative-pressure ventilation, water supply and drainage, and shotcrete applications. Made from PE plastic, whose molecules consist of carbon and hydrogen, these pipes are harmless, hygienic, and reliable. During handling, use, and disposal, they pose no adverse effects on human health or the environment, making them a green building material. The manufacturer of sealing and grouting pipes highlights the following advantages of mining-grade PE pipes: 1. Lightweight, long service life, and easy installation: The pipes are lightweight—only one-seventh the weight of steel pipes and half that of fiberglass pipes—yet their service life is four to five times longer than steel pipes. This makes transportation and installation convenient, especially underground, significantly reducing workers’ physical labor intensity and improving work efficiency. 2. Strong corrosion resistance: The manufacturer of sealing and grouting pipes emphasizes that these pipes exhibit exceptional corrosion resistance, eliminating the need for anti-corrosion treatments and thereby saving related costs. Their overall economic benefits are five to six times greater than those of steel pipes, making them particularly well-suited for underground conveyance of high-sulfur water. 3. High smoothness of pipe walls, low fluid resistance, and resistance to scaling: The pipes have excellent anti-scaling performance, ensuring smooth flow and minimizing the risk of scale buildup during underground conveyance.

2022-11-28

What are the advantages of PVC sealing tubes for mining?

What are the advantages of PVC sealing pipes for mining applications?1. PVC sealing pipes for mining are a new type of energy-saving plastic pipe that boasts advantages such as light weight, corrosion resistance, and ease of construction. These features are unmatched by conventional hot-dip galvanized epoxy seamless steel pipes.2. In the past, when selecting materials for coal mine sealing pipes, most projects opted for hot-dip galvanized epoxy seamless steel pipes to ensure durability. However, these pipes were costly, heavy, and posed significant challenges in terms of assembly, transportation, and construction. More importantly, the heaviness of hot-dip galvanized epoxy seamless steel pipes could create potential safety hazards. By contrast, PVC pipes used in mining applications stand out precisely because of their light weight, convenient transportation and assembly, and ability to significantly reduce project costs.3. PVC pipes exhibit stable flame-retardant and antistatic properties; their fire-resistant and antistatic performance does not degrade over time, meeting the growing demands of modern lifestyles.4. PVC mining pipes are highly corrosion-resistant and have an exceptionally long service life—nearly 50 years. Coalbed methane contains corrosive gases such as hydrogen chloride, sulfur dioxide, and carbon dioxide, along with prolonged exposure to moisture. Under these conditions, metal materials suffer from noticeable, intense, and rapid corrosion. In contrast, the molecular structure of PVC is stable and resistant to strong acids and bases, ensuring a long service life.

2022-11-22

Three Common Issues in the Installation of PVC Mine Sealing Tubes

Three Common Issues in the Installation of PVC Mine Sealing Pipes The main component of PVC mine sealing pipes is polyethylene. During manufacturing, other ingredients are added to the polyethylene raw material to enhance its heat resistance, flexibility, and plasticity. These pipes are primarily used in underground coal mines and other similar environments. Below, let’s take a closer look at the key points to keep in mind during their installation. 1. PVC mine sealing pipes are black in color. When exposed to sunlight, the sun-facing side absorbs heat and its temperature rises more quickly, while the shaded side warms up more slowly. This creates a temperature difference within the same pipe, which can cause it to bend. Therefore, these pipes should be stored indoors, and when used outdoors, they must be protected from direct sunlight. 2. PVC mine sealing pipes are suitable for power supply, drainage, coalbed methane extraction, and ventilation systems in underground coal mines. For polyethylene gas pipelines, the pressure rating must be at least 0.6 MPa; otherwise, the pipe could collapse under negative pressure. According to relevant safety standards, polyethylene gas pipelines are prohibited from transporting any gases under pressures exceeding 0.1 MPa. During hydrostatic testing of polyethylene coalbed methane pipelines, liquid water must be used for the pressure test—gaseous testing is strictly forbidden. 3. PVC mine sealing pipes have many advantages, but their main drawback is that their tensile strength is lower than that of seamless steel pipes. Therefore, during installation and handling, care must be taken to avoid strong impacts or mechanical stress.

2022-11-15

What are the characteristics of sealing tubes? What safety concerns should be taken into account when welding sealing tubes?

The sealing pipe is primarily made from polyethylene resin, with appropriate modifiers added, and is formed by extrusion using an extruder. Pipe fittings (pipe joints) are molded via injection molding using an injection molding machine. The outstanding features of the sealing pipe include: lightweight construction (weighing approximately one-third to one-fourth as much per meter as steel pipes of the same diameter), long service life (about eight times that of steel pipes), convenient installation and construction, reduced labor intensity, and improved work efficiency; excellent corrosion resistance, significantly lowering pipeline maintenance costs; high wall smoothness and low fluid resistance; flame-retardant, anti-static properties, and non-sparking even when cut or impacted; recyclable and environmentally friendly. The sealing pipe can be used in flammable and explosive environments such as coal mines, chemical plants, and gas mines. Before electric welding, thorough preparations must be made for the sealing pipe to ensure smooth welding operations and worker safety. 1. All welding equipment, including welding machines, welding tables, and other metal tools, must be equipped with reliable grounding wires. All switches and junction boxes on the equipment must use lightning-proof and explosion-proof devices; the use of alternative equipment is strictly prohibited. 2. Within a 20-meter radius around the work area, remove loose coal, debris, surface coal deposits, roof coal accumulations, combustible materials, and flammable and explosive items. Thoroughly wet these materials with water and then dispose of them properly. 3. Equip the work area with two fully functional dry powder fire extinguishers, and all workers must be trained in their proper use. At the same time, in the work area...

Contact: Mr. Zhang

Phone: +86-15830484858

Office: +86-318-8220200

Email: 15830484858@139.com

Address: Glass Fiber Reinforced Plastics Industrial Park, Fuchang North Road, Zaoqiang County, Hebei Province

Service quality wins user satisfaction.

Service Hotline:

+86-15830484858

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