O le Soutbon Steel o loʻo masani ona faʻaofuina ma Alamanuia PTFF (puʻupuʻu mo Polytetrafushothothylene) i talosaga malosi ma le lamatia o le malosi ma le tamaoaiga o le malosi ma le tamaoaiga e aoga. SAE-AISI 1018, 1020, 1040, 1040, 1045 \ / CK45 o le masani o carbon stedes masani e maua ai nei fusiua. Industry specifications such as ASTM A36, A193, A194, A307, A354, A449, A540, A563, F1554 and SAE J429 cover high strength carbon steel fastener grades.