Muuinjiniya waukulu, Sefa yamtundu wa Carbon Steel Flanged Y yosokonekera imatha kuyambitsa ngozi zowopsa. Nkhaniyi ikufufuza chifukwa chake ziphaso za API ndi CE zimasinthira gawoli kukhala chishango chotsimikizika chachitetezo. Imavumbulutsa zoopsa zobisika za zosefera zosatsimikizika-micro-porosity, weld failure, and material non-traceability-ndipo zikuwonetsa momwe HUADU Valve Group imapachika certification mu sitepe iliyonse yopanga. Kuchokera kusanthula kwazithunzi ndi kulondola kwa makina ovomerezeka mpaka kutsata koyendetsedwa ndi MES ndi kuyesa kwa API 598 hydrostatic, HUADU imawonetsetsa kuti Sefa iliyonse ya Carbon Steel Flanged Y-type ikukwaniritsa miyezo yapadziko lonse lapansi.