Kule mihla, iHunan Great Steel Pipe Co., Ltd inikwe inani lezatifikethi zokwamkelwa ezikhutshwe ngamaziko aliqela asekhaya nawamanye amazwe. Njenge:


Inkqubo yoLawulo loMgangatho (ISO 9001)

Isatifikethi soMgangatho (CIQ)

I-Societe Generale de Surveillance SA (SGS)
