May. 20, 2024
Buying industrial products requires extensive product knowledge. This is especially relevant for piping in commercial, industrial, or residential applications. High-density polyethylene (HDPE) pipes are industry-leading materials for various applications. Ensure you select the right pipes by reading our ultimate guide to HDPE Pipe classification.
Contact us to discuss your requirements of hdpe steel strip pipes. Our experienced sales team can help you identify the options that best suit your needs.
HDPE pipes are flexible plastic pipes made of thermoplastic high-density polyethylene. Their common use is transferring low-temperature fluids and gases. Additionally, these chemical and corrosion-resistant pipes often replace aging concrete or steel pipelines.
High-density polyethylene is a synthetic polymer derived from petroleum. The pipe’s molecular bond makes it suitable for high-pressure pipelines. Modern applications include carrying hazardous waste, stormwater, and various gases.
HDPE pipes are heavy-duty, durable, and flexible, making them an ideal choice for several applications. Industries use these pipes because they’re also corrosion and chemical resistant, making them suitable for harsh environments.
HDPE piping has various classifications, and each design has specific applications. HDPE pipes align with European standards and are classified based on the pressure-holding capacity, ranging from nominal pressure PN class to PN 20.
HDPE piping is color-coded for nominal pressure, for example, yellow for PN4. Material is graded on a separate scale; HDPE piping uses polyethylene (PE) 100, 40, 32, 80, and so on. The ideal class depends on the application. For instance, PE 80 is for simple industrial applications like gas and water, while PE 100 offers long-term strength and performance for tougher uses.
For a concise look at applications, below are some of the most common types of HDPE piping and their applications.
As mentioned, classifications of HDPE piping include nominal pressure, material, and color coding. Our ultimate guide to HDPE Pipe classification offers a rundown for a concise look at the classes.
Manufacturers produce pipes with different pressure grades (PN grades). This shows the pressure in bars the pipe can support with water at 68 degrees Fahrenheit.
The pressure grades follow European standards, and they are:
The color codes that indicate the pressure grade are yellow for PN4, red for PN6, blue for PN10, and green for PN16. These distinctions help industries select the right piping for their applications.
Polyethylene pipes require material classification too. Here’s the complete list:
Check out the typical color classifications for pipes. Keep in mind that colors can vary depending on the country.
HDPE piping comes in various sizes, varying from 20 mm to 1,200 mm in diameter. Manufacturers determine the size of the pipe by its internal diameter and measure them in millimeters.
When choosing the proper size of HDPE pipe, consider the volume of fluid you need to transport, the expected pressure the fluid encounters, and the length of the pipeline. The complete list of sizes is extensive. However, pipe suppliers offer sizing guides with additional information like wall thickness and mass.
Quality control follows ISO standards regulating the material design and minimum required strength (MRS) of pipes. Generally, quality assurance tests inform the manufacturers if the HDPE pipes can offer 50-plus years of service under normal operating conditions. In a way, quality control has classifications too!
HDPE piping is great for a wide range of applications. Industries consider nominal pressure, material, and other components when determining which pipes to use. Today, you’ll see high-density polyethylene pipes in water supply, gas distribution, agriculture, and much more.
Industries use PN 10 grade HDPE pipe for water supply and distribution networks. You’ll typically see it in multistory apartment complexes. HDPE is ideal for natural and propane gas in the gas distribution industry. It’s worth noting that gas requires high tolerance to pressure, making PN-16 to PN-2 grade pipes suitable for operations. The agriculture industry utilizes HDPE pipes for irrigation and drainage.
In addition, HDPE is relevant for sewerage, mining, and the telecom industry. Thanks to piping, cities can manage sewage and stormwater to prevent flooding. HDPE pipes can handle volatile environments because they are resistant to chemicals and corrosion.
Mining companies use pipes for slurry transport and dewatering. Lastly, HDPE piping can protect cables in the telecom industry. This is beneficial for underground cables. The best part is that businesses can use general PN class pipes for this application.
Industries choose HDPE piping over traditional pipes because they offer more advantages. More than ever, HDPE is replacing materials such as concrete, steel, or PVC. For starters, HDPE pipes are exceptionally durable and can last a long time with minimal maintenance. They’re also resistant to corrosion, chemicals, and UV rays.
HDPE pipes are also cost-effective compared to other piping materials. They’re less prone to damage, which cuts repair costs!
HDPE pipes are lighter than traditional pipes for better handling and transport. In addition, the pipes are flexible, which is ideal in areas with a high risk of soil shifting. The flexibility makes them easier to install than heavy, rigid pipes.
Speaking of easy installation, you can join HDPE piping with heat fusion. The quick installation doesn’t require special tools or equipment.
HDPE piping is a versatile and durable choice for various purposes. As mentioned, they offer several advantages over traditional pipes, including their low cost, durability, flexibility, and easy installation.
Whether you need pipes for water and sewage systems, natural gas networks, or crop irrigation, HDPE pipes are the best option. That’s why we’re proud to carry HDPE piping here at Coastal Resource Group! We offer top-quality piping for all your industrial needs. Reach out to us today!
The performance of HDPE pipes depends on raw materials, processing equipment, and technology. Many manufacturers add recycled materials to pipes to reduce costs and achieve higher profits, but this greatly reduces the performance of the pipes. How to identify the quality of PE pipes? We have described 7 ways to check:
High-quality pipes: the inner and outer surfaces of PE pipes are smooth, without defects such as bubbles, dents, and impurities.
Inferior pipes: the surface is not smooth, not bright, with obvious pitting.
The qualified pipe strip milled out by the welding machine is bright in color, and it is not easy to break after repeated folding. The milled strips are whitish or have other colors, which is caused by the addition of recycled materials or uneven mixing.
High-quality pipes: the milled strips are bright in color, neat, and can be folded repeatedly without breaking.
Inferior pipes: the milled strips are darker in color and easy to break after repeated folding.
Qualified butt weld joints should have smooth and symmetrical wrapping around the pipe ring, and the depth of the wrapping should not be lower than the pipe surface. The tolerance of both sides of the outer circle of the weld is not more than 10% of the tube thickness. The wrap edge should be firm and smooth, slightly wider at the bottom. No impurities, small holes, deformation, and damage are caused by unfavorable aspects of tumbling.
High-quality pipes: the flanging is flat, and it will be slightly longer after the welding seam is pressurized.
Inferior pipes: There are more pores on the welding surface, and the edge wrapping is shorter after butt welding is pressurized.
High-quality pipes: stable chemical performance, and the finished product will not have any peculiar smell.
Inferior pipes: unstable chemical properties, unpleasant odor, or odor after heating.
High-quality pipes: resistant to acid, alkali, salt, and various solvents, anti-corrosion and anti-aging.
Inferior pipes: Under the action of acid, alkali, salt, or detergents, various aging phenomena are prone to occur – embrittlement, cracking, molting, etc.
Elongation at break is the ratio of the length at break to the original length. The greater the elongation at break, the better the flexibility and the better the performance.
High-quality pipes: 3.5 times the original length without fracture
Inferior pipes: poor flexibility and easy to break.
OIT (Oxidative induction time) is the time for the autocatalytic oxidation reaction of the pipe to occur under higher temperature and oxygen, which can characterize the thermal degradation ability of the PE pipe during processing, storage, welding, and working. The longer the OIT, the better the aging resistance of the PE pipe.
High-density polyethylene, or HDPE, is a natural gas-derived thermoplastic known for its impressive tensile strength, corrosion resistance, and impact resistance. These traits make it the ideal material choice for piping in a wide range of applications including pressure and non-pressure pipes, conduit, and drainage. WL Plastics manufactures HDPE pipes for potable water systems, mining operations, oil and gas collection, wastewater removal, protecting fiber optic cables, natural gas distribution, and more.
HDPE pipes are durable and resistant to physical damage, corrosion, common chemicals, and other environmental hazards. They are a cost-effective choice for long-term piping needs. Learn more about HDPE, including the material’s unique features, benefits, and applications.
High-Density Polyethylene is a polymer. Polymer molecules are made of repeating chains called monomers. The monomer that makes up HDPE is ethylene, with the chemical formula of (C2H4)n. Catalysts are then added creating new ethylene co-monomers on the ends of the polymer chain. Since the polymer has a simple structure with minimal branching, it forms tightly packed chains that give the material its strength, flexibility, and stability. Because of its strength and durability, HDPE is the most widely used type of plastic, representing 34% of all plastic made.
HDPE is a ductile and strong pipe material that can stand up to harsh environmental conditions. This makes it both versatile and cost-effective for pipes, storage containers, and other applications.
LEARN MORE ABOUT THE BENEFITS OF HDPE
HDPE stays solid and rigid until it reaches its high melting point, but once it reaches that point, it can be molded into any shape. This malleability allows HDPE to be made into everything from food packaging to playground equipment.
HDPE is one of the easiest types of plastics to recycle, which helps companies take care of the environment and save costs. Recycling materials minimizes plastic production expenses and allows companies to market their products as more sustainable, which is an incentive for many customers.
HDPE can withstand different weather and environmental conditions, including rain, common chemicals, acids, solvents, and detergents. Strong acids and bases can occur naturally in the soil, so HDPE pipes are a suitable option for underground piping.
HDPE is an excellent material for pipes in a range of settings.
HDPE piping can provide irrigation for gardens, farms, and other settings. This includes intake and delivery pipes for flood irrigation and sprinklers for watering crops, lawns, gardens, or golf courses. For orchards and nurseries that require drip irrigation, HDPE piping is both strong and lightweight.
Using HDPE to transport drinking water avoids the risk of corrosion that comes with metal piping while maintaining a leak-free system.
HDPE pipes are a good solution for residential sewage disposal, fertilizer transportation, and waste disposal in the petrochemical industry. H2S gas from these applications does not harmfully affect HDPE pipes.
HDPE piping can provide secure coverage for electrical and telecommunications cables because of its resistance to water and other environmental hazards. The material can prevent cable malfunctions due to damage.
Piping to drain surface water, rainwater, and subsoil water needs to be strong and corrosion-resistant. HDPE pipes work well for drainage as well as wastewater mains.
Polyethylene pipes are the most commonly used pipes in the transfer and distribution of natural gas to customers. This is because of their leak-free joining system, strength, flexibility and low cost.
To fully understand the benefits of HDPE, consider the material in comparison with its common alternatives in water applications.
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Ductile iron is commonly used for industrial water and sewage pipes. The main benefit touted by ductile iron manufacturers is its tensile strength being higher than other types of thermoplastics. However, it is more expensive and susceptible to corrosion.
PVC is a vinyl polymer, while HDPE is a thermoplastic. PVC has a higher tensile strength than HDPE pipe but is less flexible. PVC is not resistant to UV damage and is susceptible to failures due to surge events. PVC and ductile iron both use bell and spigot joints which can leak where HDPE pipe has a fused joint system that is leak-free.
Another grade of pipe that TPC provides is HDPE pipe, which is high-density, polyethylene pipe. It’s used on all your underground lines—it’s used for fluid or gas transfer. Also, to replace your concrete piping, to make sure that all your pipe underground—stays underground and doesn’t break down as concrete pipe does.
HDPE Pipe is a very economical and durable solution for a wide variety of piping needs in all sectors. Made from polyethylene, it is vetted and proven effective for use in buried ground, above ground, surface laid, floating, slip lined, and subsurface marine applications. HDPE pipe is often used in the oil & gas, wastewater management, and agricultural industries among others.
It is more than capable of carrying wastewater, slurry, chemical substances, toxic waste, and even compressed gases. In short, it is highly adaptable to any industry, any application, and any fluid or gas medium without needing frequent repair. In fact, compared to all other piping used in some of these applications—it has the lowest repair rate.
HDPE pipe not only saves you time due to its easy installation, but it is also very economical. It has an exceptionally large impact on budgets due to:
Corrosion Resistant: Unlike traditional metal or concrete mains, HDPE pipe cannot rust, corrode, or rot. This means fewer repairs, replacements, and maintenance. Concrete and metal on the other hand, frequently rust, rot out, or have other durability issues.
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