Power rufin karfe tsarin da aka yi da Sin misali karfe farantin (Q355B & Q235B) a matsayin tushe abu.
Bayan dannawa, yin rami, yanke da kafawa, foda na resin epoxy yana preheated a babban zafin jiki don tsoma kuma a canza shi, sannan a sarrafa shi ta hanyar warkewa da sauran matakai.
Samfuran sun haɗa da: H zection karfe tsarin ginshiƙan & katako, shafi mai jure iska, takalmin gyaran kafa, sandar taye, bututun casing, Purlin da sauransu.