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Technical guides for buyers

Written for procurement engineers: what the products are, which standards and HS codes apply, and how to send an RFQ that gets a fast, accurate quotation.

Jul 18, 2026

Drilling Tools

What Is a Non-Magnetic Drill Collar?

What a non-magnetic drill collar does in the BHA, why P550 austenitic steel is used, how magnetic permeability is verified, and what to include in an RFQ.