Application in HDPE lining construction

I. Application Background

During the construction of HDPE lined steel pipes (HDPE Liner / Pull-in Liner), it has strict requirements for the weld surface and flatness of the internal wall of the steel pipe. If welding defects exist on the internal wall, it will directly affect the feasibility of the lining construction and the quality of the finished product.

Common problems include:

• Excessive weld root height;

• Weld spurs, weld beads, and sharp edges were not cleaned;

• Misalignment at the joint edges, and unevenness in some areas of the internal wall;

• Welding spatter, slag, or foreign matter residue.

II. Main Uses in HDPE Lining Construction

The TYHOO^®-GWG grinding robot can be used before HDPE lining construction:

• Inspect the weld profile of the internal wall;

• Grinding and repairing weld excess and sharp defects;

• Correction for internal wall continuity;

• Pretreatment before HDPE lining construction.

III. Help to Solve the Typical Problems:

• Liner traction is obstructed or fails;

• Scratches on the outer wall of the HDPE pipe;

• Rework or replace the HDPE pipe;

• Construction delays.

IV. Applicable Conditions

• Pipe materials: carbon steel, stainless steel, corrosion-resistant alloy;

• Pipe diameter range: 8″–36″;

• Construction scenario: Remedial treatment before or after HDPE lining construction is obstructed.

The TYHOO^®-GWG grinding robot, as an important pre-treatment equipment for HDPE lining construction, can effectively reduce construction risks and ensure the smooth implementation of projects.

TYHOO^®-GWG(Wired Control)

TYHOO^®-GWG-WRC (Wireless Remote Control)

Specifications

(Note: The specifications can be modified for special conditions according to customer requirements)