TDS · Technical article

TDS, COA and SDS for Welding Consumables: What Buyers Should Request

Understand the different roles of TDS, COA, SDS and inspection documents in welding consumables procurement.

Updated 2026-08-035 min read

Document acronyms can look interchangeable during sourcing, but each file answers a different qualification question. Requesting the correct scope reduces delays.

Technical Data Sheet (TDS)

A TDS presents approved product-level technical information such as classification, typical composition or operating guidance where applicable.

Use the exact product model in the request and confirm document version and applicable scope.

Certificate of Analysis or batch record

A COA or inspection record is commonly linked to a production batch or order rather than to every future supply of the product.

State whether the customer requires batch identity, test values, inspection results or another traceable record.

Safety Data Sheet (SDS)

An SDS supports handling, storage, safety and transport review for the applicable product.

Confirm language, market and product identity requirements before assuming one SDS covers every variant.

Build a controlled request

List the product, order context, destination and purpose of each requested document.

The supplier can then confirm issuer, version, validity and whether the file applies to the company, product or batch.

Procurement checklist

✓Exact product identity
✓Document type and purpose
✓Required market or language
✓Version or validity requirement
✓Order or batch linkage
✓Customer approval deadline