Isitifiketi se-1-mill 2-SGS Umbiko Wokuhlola Wensimbi Eyinhloko 3-SGS Umbiko Wokuhlola Wensimbi Eyinhloko 4-NDT Isitifiketi Sobunjiniyela 5-Welder Certificate BV Certified 6-MT Crack Ukutholwa 7-atema Testing On Welding 7-atema Testing On Welding 9-surface Cleaning Ukuhlola okunobukhulu obuyi-10 11-Kufakwe ngaphambili efekthri