Automated Steel Pipe Shot-Blasting System with Sa 2.5 - Sa3 Standard and Integrated Dust Collection

The Advanced Shot-Blasting System is a high-efficiency surface treatment solution designed specifically for steel pipes prior to 3LPE (Three-Layer Polyethylene) coating. This system ensures optimal surface cleanliness and roughness, which are critical for achieving strong adhesion and long-term corrosion resistance in pipeline applications.

• Superior Surface Cleaning (Sa 2.5 - Sa3 Standard)
  Removes rust, mill scale, and contaminants to meet international surface preparation standards.
• Uniform Surface Roughness
  Creates an ideal anchor profile to enhance bonding strength between the steel pipe and 3LPE coating layers.
• High-Efficiency Shot-Blasting Turbines
  Equipped with powerful blasting wheels for consistent and fast processing of large-diameter pipes.
• Automated Operation System
  Fully automated pipe conveying, rotating, and blasting processes improve productivity and reduce labor costs.
• Advanced Dust Collection System
  Integrated environmental protection system ensures clean operation and compliance with emission standards.
• Durable & Wear-Resistant Components
  Built with high-quality materials to ensure long service life and reduced maintenance.

Three-Layer Structure of 3PE Anti-Corrosion Pipe
The three-layer PE anti-corrosion structure includes fusion bonded epoxy-powder bottom layer, polymer adhesive middle layer and polyethylene outside layer. The epoxy powder is a kind of thermosetting nontoxic coating, forming the high molecular weight cross-linking structure coating after solidifying, featuring good chemical anti-corrosion and high mechanical properties.

Function of epoxy layer is to form continuous coating and to provide the steel tube surface with good chemical resistance and cathodic disbanding resistance. The function of polymer adhesive is to agglutinate the epoxy layer and the polyethylene outside layer, which unites all three layers together. The polyethylene layer protects the pipe from abrasion, bump and water.