Procurement guide

How to Prepare a Valve, Fitting and Flange BOM

Direct answer: Build a mixed valve and piping line-by-line BOM. Give each item a description, size, pressure or class, material, connection or dimensional standard, quantity, destination, and required documents. Keep uncertain fields visible for confirmation.

Information to Compare

  1. Line identityUse a unique line number and one clear product description per item.
  2. Size and ratingSeparate size from PN, class, schedule, or other specified rating fields.
  3. MaterialsState the project material requirement for the item and any specified component details.
  4. Connection and dimensionsList the end connection, flange drilling, dimensional standard, schedule, or other interface requirement that applies.
  5. QuantityKeep the unit and quantity explicit for each line.
  6. DocumentsAdd a separate column for required reports, certificates, drawings, or inspection coordination to be confirmed.

Buyer Questions

Should valves, fittings, and flanges be placed in separate files?

Not necessarily. One structured BOM can keep related line items together if every item has clear fields and a unique line number.

How should flange interfaces be described?

State the applicable connection, drilling, facing, dimensional, pressure, material, and adjoining piping requirements that the project provides.

What should happen to incomplete BOM fields?

Leave them visibly marked for confirmation and include the project context instead of inserting an assumed value.

Prepare the Inquiry

Use the checklist to organize known requirements and mark missing fields for confirmation.

Send Your RFQ or BOM