Round Plastic Corrugated Pipe C-60 Precast Beam Plastic Corrugated Pipe Manufacturer Corrugated Pipe for Prestressed Tensioning

I. Product Introduction

Prestressed Plastic Corrugated Pipe is a high-performance corrugated pipe used for post-tensioned prestressed concrete structures, typically made from high-density polyethylene (HDPE) or polypropylene (PP), featuring a bamboo-joint-like raised surface structure. Its key characteristics are as follows:

1. Product Features

• Strong Corrosion Resistance: Plastic material resists acids, alkalis, and rust, Round Plastic Corrugated Pipe C-60 Precast Beam Plastic Corrugated Pipe Manufacturer Corrugated Pipe for Prestressed Tensioning suitable for humid or corrosive environments.
• Low Friction Coefficient: Smooth inner wall reduces friction loss during prestressed tendon tensioning.
• Good Flexibility: Can be bent into various curves to adapt to complex structural construction.
• High Compression Resistance: Bamboo-joint design enhances ring stiffness, resisting impact during concrete pouring.
• Excellent Sealing: Prevents cement slurry infiltration, ensuring dense grouting in the duct.

2. Application Scenarios

• Bridge engineering (box girders, T-beams, etc.)
• Building structures (long-span slabs, stadiums, etc.)
• Municipal engineering (underground utility tunnels, viaducts, etc.)

3. Common Specifications

• Diameter: Φ40mm, Φ50mm, Φ60mm, Φ80mm, etc. Round Plastic Corrugated Pipe C-60 Precast Beam Plastic Corrugated Pipe Manufacturer Corrugated Pipe for Prestressed Tensioning (selected based on prestressed tendon specifications).
• Length: Typically 6m per piece, customizable.
• Color: Black, blue, etc. (some manufacturers provide color codes to distinguish models).

II. Construction Process

1. Pre-Construction Preparation

• Material Inspection: Ensure pipes are free from damage, deformation, and have intact bamboo-joint structures.
• Layout and Marking: Mark the prestressed tendon alignment according to design drawings, fixing support bar spacing (recommended ≤1m).

2. Installation Key Points

• Fixing Methods:
  • Use binding wires or dedicated clips to secure the bamboo-joint pipe to support bars, ensuring smoothness and no local bending.
  • Use specialized sleeves or heat fusion for connections, and seal with tape to prevent grout leakage.
• Precautions:
  • Avoid high temperatures from direct welding that could damage the pipe.
  • Bending radius must comply with standards (generally ≥3m) to prevent sharp angles.

3. Concrete Pouring

• Avoid vibrating near the corrugated pipe to prevent displacement or damage.
• Check duct暢通 after pouring (can be tested with a duct detector).

4. Prestressed Tensioning and Grouting

• Before Tensioning: Clear debris from the duct, insert steel strands or bars.
• Grouting Requirements:
  • Use specialized grouting material with water-cement ratio ≤0.4.
  • Inject from the low end, vent from the high end, ensuring full grouting.

III. Precautions

1. Storage: Avoid direct sunlight, keep away from fire sources, store flat to prevent deformation.
2. Quality Acceptance: Test ring stiffness, sealing, etc., according to《GB/T 19685-2017》standards.
3. Environmental Friendliness: Some products are recyclable, meeting green construction requirements.