CRA Weldoverlay Cladding
A welding process that deposits surfacing material on a substrate to improve corrosion or wear resistance. The overlay is metallurgically bonded to the base material, so the cladded component acts as one composite material.
Computerised welding systems
Our workshop is equipped with computerized horizontal GTAW welding systems for cladding line pipes and spool pieces up to 12 metres in length, and computerized vertical pulsed hot-wire GTAW welding systems to clad a wide range of fittings, flanges, valve bodies, pressure vessels and similar components. Standards used for this product are ASME, API, ISO and DNV.
The state of the art welding system uses the latest PLC controller and electronic technologies to assist CES skilled craftsmen in producing high quality welds in accordance with the international codes and standards of ASME and API.
Cladding process control
Overlay welding is performed using WPS/PQR in accordance with ASME Section IX. In-process QC checks cover visual and dimensional examination including welding monitoring, with NDT to include UT, DPT, PMI and dimensional.
Product types, sizes and limits
Cladding product types
- Pipes
- Fittings
- Flanges
- LR bends
- Valve bodies
- Well heads
- Risers
- External for risers
- Pressure vessel — shell, nozzle, dished ends
- Other similar geometrical shapes
Cladding product sizes
- Pipes
- 2″ and above
- Flanges
- 2″ and above
- Fittings
- 3″ and above
- Elbows
- 4″ and above
Limitations
- Item ID prior to cladding is > 42 mm
- Item wall thickness shall be > 7.1 mm
- Pipe length up to 6 m; 12 m available on request
Outside this envelope? Send the drawing — a large share of our work starts as an exception.
Cladding base materials
| Category | Specification |
|---|---|
| Carbon steel pipe for high-temperature service | ASTM A105, A106, A234, A691 |
| Carbon steel for moderate and lower temperature service | ASTM A516, A671, A672 |
| Carbon and low-alloy steel forgings | ASTM A350, A420, A694, A707, A859 |
| High strength ferritic steel | ASTM A860 |
| Carbon steel line pipe | API 5L |
Scroll the table sideways to see every column.
Any other weldable backing material substrate is accepted upon request.
Cladding materials
Nickel and Ni-alloy grades
Stainless steel grades
Duplex stainless grades
Hardfacing overlay grades
Any other weldable alloy upon request.
Cladding in progress
Related capabilities
Pipe Spool Fabrication
Custom pipe spools fabricated to international codes and client specifications.
ViewInspection & Testing
Comprehensive NDT testing and quality assurance for ensured integrity.
ViewEGCS Overboard Discharge Pipes
Specialised cladded solutions for marine EGCS discharge piping systems.
ViewExternal Coatings
High performance protective coatings for harsh industrial environments.
ViewSend us your cladding scope
Drawings, material grade, quantity and schedule — we will return a qualified approach and price.
