Lokhu kufanele kube yingxenye yohlelo lokuhambisa uketshezi (uwoyela, igesi, umusi, amakhemikhali, ...) ngendlela ephephile futhi ephumelelayo, amabanga amafushane noma amade.
Zonke i-ASTM A234 Elbow & Elbow A234 WPC zenziwa epuletini, zicindezelwe ngama-halves amabili ngama-seam amabili we-weld. Sinikeza i-radiography eyi-100% kuwo wonke ama-welds njengezinga.