Casing and tubing may use prescribed paint bands or coupling colors to help distinguish grades during storage, handling and wellsite preparation. The applicable marking arrangement depends on the governing product specification and agreed order requirements.
Paint can fade, become obscured or be applied incorrectly. Color marking is therefore a visual aid rather than the sole basis for accepting material.
- Read the permanent product marking
- Check heat, lot and item traceability
- Match the material certificate and packing list
- Confirm size, mass, grade and connection
The coupling, pipe body and thread protector may carry different visual identifiers. Personnel should use the marking table from the applicable specification and purchaser documents.
Any mismatch between paint, stencil, certificate, tally or connection identification should be quarantined and resolved before the product enters the well.