KUALIFIKASI WELDING PROCEDURE SPECIFICATION (WPS) DAN JURU LAS (WELDER) BERDASARKAN ASME SECTION IX DI INDUSTRI MIGAS. sp [Internet]. 2012 Dec. 31 [cited 2026 Jun. 6];2(3). Available from: https://dev-ejurnal.ppsdmmigas.id/sp/index.php/swarapatra/article/view/81