QIYUE FAN / MATERIALS AND FINISHES

Industrial Fan Coating RFQ: Specify More Than a Color

A color reference tells a supplier how a surface should look. It does not define chemical compatibility, temperature suitability, surface preparation or inspection evidence.

Specify the exposure, surface preparation, coating system and inspection requirements together so suppliers can quote a clearly defined finish.

Keep three decisions separate

Describe the exposure before asking for a coating name

Greenheck’s fan coating application guide considers factors such as outdoor exposure, coastal conditions, particles, chemicals, concentration, gas temperature and operating frequency. It also explains the importance of preparation beneath the coating. Select the coating system for the specific substrate and exposure.

For your enquiry, distinguish the external environment from the gas contacting internal surfaces. Include relevant process and cleaning information, with a safety data sheet when available. Ask the supplier to state assumptions and unresolved compatibility questions rather than accepting a general “anti-corrosion paint” description.

Define where the proposed system applies

• Surface schedule: identify internal casing, external casing, impeller, base and other relevant parts separately. Record any excluded, masked or separately finished areas.
• System reference: obtain the proposed coating specification and revision, including any primer and finish layers where applicable.
• Inspection scope: agree which preparation, thickness, appearance or other checks are required, the acceptance basis and the records to be supplied. Do not invent a universal thickness.
• Damage and repair: clarify who handles shipping damage assessment and any approved repair procedure. Do not assume a locally available paint is an equivalent touch-up system.

Start with the fan material selection guide for gas-contact material questions. A coating color or trade name is not a substitute for that review.

Do not convert salt-spray hours into service years

If a quotation includes a coating test claim, request the report reference, specimen and coating-system identity, evaluation criteria and relationship to the proposed finish. Keep the result separate from any contractual warranty. A test result for an unidentified panel does not resolve whether your offered system matches it.

Copy a coating clarification record

Equipment tag / quotation revision:
Part and substrate:
Internal or external surface:
Service environment and exposure information:
Normal / maximum temperature and operating duration:
Proposed coating system and document revision:
Preparation requirement reference:
Covered / excluded / masked surfaces:
Color and appearance requirement:
Inspection method and agreed acceptance reference:
Required records and test-claim references:
Approved repair information, if required:
Open compatibility or scope question:
Responsible reviewer / written disposition:

Compare the confirmed scope, not the sales description

Ask each supplier to return the same surface schedule. Mark an unconfirmed requirement as open; record any alternative system as a proposal requiring review, not an accepted equivalent. Confirm availability, cost and lead-time implications before treating offers as comparable.

Continue with the quotation comparison guide and pre-shipment evidence checklist. For an enquiry, send the operating environment and requested finish scope.