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Supplier Verification Checklist for Cementing Tools
Built for the buyer who has to defend the choice internally. Select what you are sourcing and which route you are using, and this returns the evidence to request — and, just as importantly, the claims to refuse. It is written to work against us as well as against anyone else.
1. What are you sourcing?
Casing centralizers
Bow spring, semi-rigid, rigid, roller or composite
Float equipment
Float shoe, float collar, guide shoe
Cement head
Double-plug, single-plug or top-drive
2. Which supply route?
Direct from a mill
You contract the manufacturer
Integrated major
Product bundled with service
Sourcing and QC partner
Supplier selection plus inspection
3. Where is it going?
US offshore (OCS)
30 CFR 250 applies
US onshore
State regulation
International
Operator specification governs
Grounded in API Monogram Licensing Program Requirements (Revision 19, FM-002), API Advisory 11, the API Composite List, API Standard 65—Part 2, and 30 CFR 250.415 and 250.420. Welong is a sourcing and quality-control company. We hold no API monogram, we do not apply the monogram to any product, and this checklist is deliberately written so you can use it to test us.
![Choke & Kill Hose: [Field Guide]](https://welongoiltools.com/wp-content/uploads/2026/07/choke-kill-hose-guide-featured-1-150x150.png)
