I-ASTM A815 igubungela iiklasi ezimbini ngokubanzi, i-WP neCR, yeFerricric Ferric, i-Ferricuric Fortic, i-Ferricuric \ / Austisic, kunye ne-Martiatic Syltings yensimbi yokwakha intsimbi engenamthungo kunye ne-weldied. I-WP ye-WP ye-WP ye-WP zahlulwe zaba zi-subplaplasne ezine: Iiklasi ze-WP-S, i-WP-WE, WX, kunye ne-WP-WU. Izinto ezibonakalayo ziya kuba nezinto ezilungisiweyo, imivalo, iipleyiti, okanye iimveliso ezingenamthungo okanye zenziwe.
Umzi-mveliso we-Teel ukhule kwiminyaka embalwa edlulileyo kwaye kukho iintlobo ngeentlobo zeemveliso ezikhoyo kwintengiso. I-ASTM A815 ASTALS S32750 ye-S32750 ye-S32750 yenye yezo mveliso kwaye ziyafumaneka ngobukhulu obahlukeneyo, iimilo, kunye nobungakanani. I-ASTM A815 AS60 S32760 ye-S32760 yenzelwe ukunganyangeki ukuba iyosuleleka kwaye kuthiwa inobume obugqibeleleyo. Ezi ntlobo zibalaseleyo ze-Supplex S32750 ze-furweld zichasa ukunganyangekiyo kukukhukuliseka kwe-erosion kunye nokudinwa. Banolwakhiwo oluxubileyo lwe-50% i-austitic kunye ne-50% frrite.