Cat IV Refurbishments
Darby’s Welding can do Cat IV rebuilds on masts and substructures to OEM specs. Cat IV services can be performed in the field or in our shop.
Once the rig is stripped down and in the engineering workshop for refurbishment, we visually inspect and non-destructively test individual components for evidence of fatigue to avoid equipment damage and expensive unplanned downtime. As part of our Cat 3 & 4 inspections, we can work with your chosen repairer or our in house team to coordinate inspections and carry out necessary repairs. Once refurbishment and servicing has been completed, we will conduct a final inspection and issue the certificate of compliance.