Faavae faavae o le steel pepa faaputuga

Vevela-rott streel pepa palu e masani ona iai ni foliga e tolu:U-foliga pepa Steel, Z-foliga steel pepa faaputugama laina faʻapipiʻi pepa faʻapipiʻi. Vaʻai le Ata 1 mo faʻamatalaga. I totonu o latou, o le pepa SBEel Smuel Pules ma Linear Steel pepa o ni taugofie e tatau ona taugata ona o le gaosiaina o gaosiga, faagaoioiga ma le faapipiiina faagaoioiga. O le 1/3 maualuga atu nai lo U-foliga Steel pepa faaputuga. Ua faʻaaogaina nei i Europa ma Amerika. U-foliga Steel pepa fasi faaputuga e tele na faʻaaogaina i Asia, e aofia ai Saina.