Exhibition Review: INTERNATIONAL NO·DIG 2026 AUCKLAND
At the INTERNATIONAL NO·DIG 2026 AUCKLAND exhibition held in Auckland, New Zealand, Daoyunai Energy Saving Technology Limited welcomed international municipal engineers, trenchless contractors, and underground asset managers at Booth B26 within the China Pavilion. The event served as a major global platform organized by the International Society for Trenchless Technology (ISTT) to exchange practical experience and examine the latest hardware developments in non-excavation pipe repair and video inspection systems.
Daoyunai technical delegation presenting trenchless rehabilitation systems and video inspection crawlers at Booth B26.
On-site consultation reviewing technical specifications for UV CIPP equipment and waterproof video inspection cameras.
Key Equipment Parameters & Specifications
Field discussions focused heavily on equipment capacity for varying municipal pipe diameters and operational control features during ultraviolet (UV) curing processes. Selecting the right lining diameter and cable automation system ensures consistent resin polymerisation and prevents structural defects during trenchless lining operations.
| Category / Feature | Specification / Value | Engineering Context & Operational Guidance |
|---|---|---|
| Standard Pipe Diameter | Standard DN200-1200 | Covers mainstream municipal drainage and sewer trunk lines requiring trenchless cured-in-place pipe (CIPP) lining. |
| Advanced Pipe Diameter | Advanced DN1500 | Engineered for larger storm sewers and main interception pipes demanding enhanced UV light intensity and reach. |
| Optional Pipe Diameter | Optional to DN2000 | Custom configuration available for large-span culverts and structural pipeline rehabilitation projects. |
| UV Cable Control | UV cable 200m auto winding speed control | Provides precise speed management during light-head pulling, ensuring consistent light exposure and uniform resin curing. |
| Waterproof Rating | IP68 | Essential protection rating for CCTV inspection camera crawlers operating in fully submerged or high-humidity sewer environments. |
Technical Insights & Field Operation Boundaries
Technical specifications display showcasing UV CIPP pulling cable configurations and pipe diameter operational boundaries.
During technical exchanges at Booth B26, industry practitioners highlighted critical pre-rehabilitation and post-rehabilitation quality assurance measures:
- Pre-Curing CCTV Video Inspection: Cameras rated at IP68 ingress protection must perform a complete pass to identify major offset joints, structural cracks, or high-water inflows prior to liner insertion.
- Speed Control and Energy Calibration: The UV cable 200m auto winding speed control system maintains constant pulling velocity. Inconsistent travel speeds can create localized under-curing or thermal stress on resin matrix structures.
- Diameter Selection Range: Equipment selection must align strictly with pipe dimensions, matching Standard DN200-1200 for standard sewer mains, extending to Advanced DN1500 or Optional to DN2000 for large municipal stormwater conduit rehabilitation.
Daoyunai Energy Saving Technology Limited continues to focus on trenchless innovations, combining high-definition video crawler technology with automated UV curing systems to streamline municipal underground asset management.