The welder marketplace
WeldRunners
Certification

API certified fabricators

Oil and gas tank and equipment standards.

1 shop states it holds API in OK. Each entry below shows the sentence we read it from, on the shop's own website — we don't record a certification we can't quote. Confirm current status with the shop or the certifying body before you award work.

API – shop fabricated tanks and componentshttps://www.matrixservice.com/services/fabrication/
Also: ASME U-stamp · ASME S-stamp

Need this work done?

Tell us what you need made and we'll put it in front of shops that hold the right certification — and welders qualified to the same code, if the job needs people on site as well as parts.

Describe your project →
API certified fabricators — 16 verified shops | WeldRunners · WeldRunners