He mea hanga te rauemi mai i te kurupae H whānui-whānui paerewa o Amerika me te paerewa rahi o ASTM A6. Ka taea te whiriwhiri i te kounga maitai i waenga i te ASTM A572 GR50 /GR60, ASTM A992, Q355 rānei. Ka tutuki te whakapūmau wera-tuku i ngā paerewa ASTM A123, ISO1461 me AS/NZS4680. Heoi anō, e harikoa ana mātou ki te whakatutuki i ētahi atu paerewa kounga me te matotoru paninga HDG rerekē mō ā mātou kiritaki, nā te mea ko tā mātou tikanga he tere te whakautu ki ngā hiahia o te kiritaki me te mahi tonu. Ko te rarangi roa a te kamupene o ngā whakatakotoranga noa o ngā kurupae WF 2000 tana, kia tutuki ai ngā whakaritenga tuku tere a te kiritaki.