Visual acceptance criteria for stamped metal random packing should distinguish functional defects from minor cosmetic variation. Inspection should focus on geometry, structural integrity, cleanliness, and production consistency.

Random packing dimensions should be inspected using representative samples, defined measurement points, appropriate instruments, and agreed tolerances. Manufacturing variation should be distinguished from shipment damage.

A metal random packing pre-shipment inspection plan should link sampling, dimensions, sheet thickness, material verification, visual quality, quantity, and packaging directly to the approved procurement specification.

A multi-tower RFQ should use a structured item schedule linking every packing bed and internal to a unique tower tag, quantity, material, drawing reference, revision, option, and spare requirement. This improves supplier comparison, logistics, and future AI-assisted procurement review.

Spare tower packing and internals should be specified by actual maintenance need, with clear quantity units, identification, packaging, and documentation rather than only a generic percentage.