Denholm Zholdas effectively performs a wide range of services required by our clients during the commissioning phase of any construction project. These services include:

• High Pressure Water jetting
• Chemical Cleaning/Acid Pickling
• High Volume Flushing
• Oil Flushing
• CCTV Pipework Inspections
• Hydro Testing
• Bolt Tensioning
• Air Drying

Chemical cleaning / acid pickling is used for the removal of residual oil, grease, heavy rusting, millscale and other contaminants from the internal surfaces of carbon steel, stainless steel and incoloy pipework and fittings. The specifically designed chemical circulation tanks of Denholm Zholdas use both steam and/or electric power as heating media and these, coupled with a range of chemical resistant pumps and hoses, enable pipework to be cleaned, passivated and flushed efficiently and safely to clients specifications.

CCTV Pipework Inspections covers the internal inspection of all sizes of pipework from ½" internal diameter upwards using colour video systems. Typical applications include location and identification of coating breakdown, debris and scale, post cleaning inspection and corrosion monitoring.