Customer's Challenge

A client in Singapore needed to modify a batch of 140 riser pipe connectors by boring additional grooves due to a last-minute site specification change for an offshore project. These modifications were critical and had to be completed within a very short time frame. The connectors were already welded to 20m-long pipes, making it impractical to transport them to a large-scale CNC machine shop. Considering the logistical challenges and the unavailability of large lathe machines, the client sought an on-site machining solution.

Solution

Metal Machines was approached to provide a precise and efficient solution. After thoroughly reviewing the engineering drawings and GD&T (Geometric Dimensioning and Tolerancing) requirements, the team proposed the use of the WS3 Dragster 1000 portable CNC boring system. This solution was selected due to its ability to achieve the required tight precision, as any welding on the connectors was not permissible.

To ensure zero errors, Metal Machines conducted a mock trial within three days, which included modifying the machine holding frame and programming the necessary G-code. Four dedicated teams of technicians were assembled and trained on the machining procedures to ensure consistent and repeatable results across all 140 connectors. Given the stringent tolerance requirements for the groove, the final dimensions were measured using the Faro Edge Arm for precise verification.

Metal Machines deployed two units of the WS3 Dragster 1000, with eight personnel working in day and night shifts to meet the client’s tight deadline.

Benefits

Through continuous investment in portable CNC and measurement equipment, Metal Machines Engineering Services Pte Ltd ensures high repeatability and consistent results in machining solutions. The client was extremely satisfied with the performance, precision, and commitment demonstrated by the Metal Machines on-site team, successfully meeting the project’s urgent requirements.