Lincoln’s quality procedures are established under the guidance of the American Petroleum Institute (API) Specification Q1. Lincoln Manufacturing is licensed to manufacture and monogram products meeting API Specifications 5CT (Accessories, Couplings & Threading), API 5L (Line Pipe Couplings) and API Specification 7-1 (Drill Stem Subs and Threading for Rotary Shouldered Connections).
Conformance to API Specifications is carefully managed by a highly skilled team of quality assurance and quality control Lincoln professionals.
Adherence to strict API Specifications helps to ensure part-to-part product uniformity and consistency with complete traceability and documentation reporting to those who count on Lincoln Manufacturing the most, our customers.
Lincoln is certified to the most recent release of ISO 9001 standards for manufacturing systems. The quality management system is audited and registered annually to ensure strict compliance to industry and customer product standards. Lincoln processes are repeatable and reliable to ensure product quality is not sacrificed. The Lincoln goal is to achieve and maintain a 6-sigma process quality standard.
AXIS HT / HTSP
DQX / QX / BPN
QB1 / QB2
Freedom HTQ Threads