What to Show on Drawings for a Rubber Lining Quotation

A drawing helps a supplier understand the shape and extent of a rubber lining project. It works best when the lining boundary is visible and the drawing is accompanied by an operating brief. Geometry alone does not establish material suitability.

Mark the surfaces to be lined

Highlight the internal surfaces, nozzles, flange faces, covers and other areas included in the enquiry. Mark areas that are excluded. Show dimensions, units, substrate material and equipment identification where known. If an area figure is approximate, label it as an estimate and explain whether the supplier should verify the quantity.

Include details that affect the work

Provide sections or detail views for openings, connections, internal attachments and changes in shape. Show how the equipment can be accessed and whether components can be removed. For existing equipment, add photographs and identify old lining, visible damage or deposits requiring assessment. A photograph supplements a drawing; it should not silently replace missing dimensions.

Separate requirements from proposals

If the design already specifies a lining system or thickness, identify that requirement and its source. If selection is still open, ask the supplier to propose a system for review. Keep proposed seams, termination details and installation arrangements clearly marked until they are agreed. Do not present an unreviewed sketch as an approved fabrication instruction.

Control revisions before ordering

Use a drawing reference and revision label in the enquiry. Keep a record of questions and corrections, and ask the supplier to list the drawing revision used in its quotation. When the geometry or scope changes, obtain confirmation of the effect on quantity, price and schedule.

Send the latest drawing package with the contact medium, operating conditions, project location and required supply scope. Confirm the final drawing and responsibilities before procurement or construction begins.