DIRAX: The Ultimate Pipeline Coating for Road Bores and Directional Drilling Applications

 DIRAX: The Ultimate Pipeline Coating for Road Bores and Directional Drilling Applications

Introduction: In the realm of pipeline coatings, one product stands out as a true game-changer: DIRAX. This high-performance fiberglass reinforced sleeve has been specifically designed to provide exceptional corrosion protection for pipes used in directional drilling applications. With its unique three-layer construction and a host of advantageous features, DIRAX emerges as the unrivaled choice for road bores and directional drilling projects.

Advanced Construction and Design: The DIRAX system boasts a three-layer construction, each layer playing a crucial role in ensuring optimal performance and protection. The first layer consists of a solvent-free, two-component liquid epoxy, which forms strong mechanical and chemical bonds to the pipe surface. The second layer comprises a high shear strength copolymer adhesive, further enhancing the bonding capabilities. Finally, the third layer is a thick, fiberglass reinforced, radiation cross-linked polyethylene, providing the sleeve with exceptional durability.

Unmatched Features and Benefits:

1. High Resistance to Shear and Peel Forces: DIRAX exhibits outstanding toughness, making it highly resistant to shear and peel forces induced by soil and thermal movements. This feature ensures the integrity of the pipeline, even under challenging conditions.

2. Exceptional Abrasion and Wear Resistance: The durability of DIRAX is unparalleled, offering abrasion and wear resistance comparable to mill coatings. This ensures that the coating remains intact and undamaged, even during pull-through operations.

3. Monolithic Coating System: DIRAX provides a monolithic coating system, offering seamless protection for girth welds. By eliminating any weak points or vulnerabilities, the coating ensures long-lasting reliability and performance.

4. Enhanced Security with Wear Cone: To provide additional strength and security, DIRAX includes a wear cone that protects the leading edge of the sleeve against pull-through forces. This added layer of protection increases the overall reliability of the pipeline.

5. Fast and Convenient Application: Installing DIRAX is a swift and efficient process. The sleeve is applied directly over wet epoxy, eliminating the need for curing or waiting times. This results in a faster application that saves valuable time without compromising on the quality of the coating.

6. Superior Barrier Protection: DIRAX offers superior cathodic disbondment and hot water immersion resistance, acting as an optimal barrier against corrosion. With DIRAX, pipeline operators can rest assured that their infrastructure is safeguarded against the damaging effects of moisture and corrosion.

7. Pre-Attached Closure Patch: For added convenience, DIRAX comes with a pre-attached closure patch. This feature streamlines the application process, making it fast and easy for pipeline installers.

8. Low Preheat Requirements: DIRAX's low preheat requirements make the installation process faster and more efficient. By minimizing preheating time, pipeline projects can be completed in a shorter duration, leading to significant time and cost savings.

Conclusion: When it comes to road bores and directional drilling applications, DIRAX emerges as the unparalleled choice for pipeline coating. Its unique construction, including a three-layer system and reinforced fiberglass sleeve, ensures high performance, exceptional corrosion protection, and durability. With its host of beneficial features, including resistance to shear and peel forces, wear resistance, fast application, and superior barrier protection, DIRAX stands out as the very best coating available on the market today. When reliability, efficiency, and long-term protection are paramount, DIRAX is the ultimate solution for pipeline projects.

HTLP80: An Excellent Three-Layer Polyethylene Pipe Coating

 HTLP80: An Excellent Three-Layer Polyethylene Pipe Coating

When it comes to girth weld protection systems for three-layer coated pipes, HTLP80 stands out as the most widely used solution. HTLP80 is a highly effective three-layer polyethylene pipe coating that provides exceptional protection for pipeline girth welds. This product has gained widespread recognition and is trusted by industry professionals around the world. Let's delve into the features, benefits, and specifications that make HTLP80 an excellent choice for pipeline coating.

Product Description: HTLP80 is part of the HTLP series, which includes HTLP60 and HTLP80 field-joint coatings. The construction of HTLP80 comprises a three-layer system:

1. First Layer: Liquid Epoxy - This solvent-free, two-component epoxy acts as the initial layer, applied directly to the prepared pipe surface.

2. Second Layer: High Shear Strength Copolymer Adhesive - The copolymer adhesive provides excellent bonding properties and enhances the overall strength of the coating.

3. Third Layer: Radiation Cross-Linked, High-Density Polyethylene (PE) with PCI - The outer layer consists of radiation cross-linked, high-density polyethylene, which offers a tough barrier against mechanical damage and moisture transmission. It includes a Permanent Change Indicator (PCI) for easy post-heat inspection.

HTLP80 is designed as a wrap-around heat-shrinkable sleeve, emulating the structure and performance of mill-applied three-layer PE coatings. It also exhibits remarkable compatibility and can be used with various other mill-applied coatings.

Product Features and Benefits:

1. Superior Resistance: HTLP80 is fully resistant to shear forces induced by soil and thermal movements. It withstands external stressors, ensuring long-term durability and reliability.

2. Strong Mechanical and Chemical Bonds: During installation, the epoxy layer creates strong mechanical and chemical bonds to the pipe surface and copolymer adhesive. This combination enhances the overall strength and performance of the coating.

3. Optimum Corrosion Protection: HTLP80 offers superior cathodic disbondment resistance and excels in hot water immersion tests. It provides an effective barrier against corrosion, ensuring the longevity of the pipeline.

4. Monolithic Coating System: By reconstructing the coating of three-layer coated pipes, HTLP80 enables the pipeline to have a virtually monolithic coating system. This seamless protection further enhances the integrity of the pipeline.

5. Easy Inspection and Application: The dimpled backing of HTLP80 serves as a "permanent change" indicator for the application of heat. It ensures correct heat application and allows for easy post-heat inspection, providing reliable inspectability at any time.

Product Selection Guide: HTLP80 is specifically designed for higher operating temperatures compared to its counterpart, HTLP60. Here is a summary of the selection guide for HTLP80:

• Max Operating Temperature: 80°C (176°F)
• Compatible Line Coatings: PE, PP, FBE, Coal Tar
• Min Preheat Temperature: 70°C (158°F)
• Recommended Pipe Preparation: SA 2½
• Soil Stress Restrictions: None
• Performance: EN 12068 Class C60 UV, Class C80 UV

Product Properties: HTLP80 exhibits excellent physical properties, as outlined below:

• Backing:

  • Tensile Strength: 3000 psi (20 MPa)
  • Elongation: 580%
  • Hardness (Shore D): 55
  • Shrink Force: 40 psi
  • Dielectric Strength: 500 volts/mil (20 kV/mm)
  • Moisture Absorption: 0.05%

• Adhesive:

  • Softening Point: 120°C (248°F)

Pipeline Bumpers for Road Bore Bundle

 When it comes to road bores, there are various types of bumpers or casing spacers that can be used to provide support and protection to the bundled cables or conduits during the boring process. Here are a few commonly used options:

1. Casing Spacers: Casing spacers are designed to maintain the separation between carrier pipes or conduits during road bores. They are typically made of high-density polyethylene (HDPE) and feature ribs or dividers that hold the bundled cables or conduits in place within the casing. Casing spacers help prevent damage and ensure proper positioning of the pipes or conduits.

2. Bore Spacers: Bore spacers are similar to casing spacers but are specifically designed for road bores. They are typically made of non-conductive materials, such as HDPE, and are used to maintain the separation and alignment of the bundled cables or conduits within the bore hole.

3. Casing End Seals: Casing end seals are used to provide a watertight and secure seal at the ends of the casing or conduit. They help prevent the ingress of water, dirt, and other contaminants into the casing during the road bore.

4. Duct Sliders: Duct sliders are often used in road bores to facilitate the installation of bundled cables or conduits into the casing. They are typically made of low-friction materials, such as plastic or nylon, and are placed at the entrance of the casing to ease the movement of the cables or conduits as they are pushed through the bore.

It's important to note that the specific type of bumper or casing spacer used for road bores may vary depending on the project requirements, local regulations, and the size and configuration of the bundled cables or conduits. It's recommended to consult with industry experts or suppliers who specialize in underground construction materials to ensure you select the appropriate bumpers for your specific application.