The whole product line of Wenlen S.A. is manufactured in accordance with international standards.
Wenlen S.A. has obtained the following international qualifications.

TUB RHEINLAND ISO 9001:1994	AMERICAN PETROLEUM INSTITUTE MONOGRAMA API SPEC 16A, DRILL THROUGH EQUIPMENT
AMERICAN PETROLEUM INSTITUTE Monograma API Spec 6A, Valve & Wellhead Equipment (PSL4)	AMERICAN PETROLEUM INSTITUTE Monograma API Spec 6D, Pipeline Valves