I-ASTM A213/SA213 ye-Alloy-Steel yeBhoyila, iSuperheater, kunye neHeat-Exchanger TubeIsandiso:PDFUbungakanani:248.15 I-KBIhlaziyiwe:2023-04-29 9:25Imibono:11271 Imibono KhuphelaYabelana:Ngaphambili: Umgangatho we-ASTM A312/SA312a weepayipi zentsimbi engatyiwayo ezingenamthungo nezidityanisiweyo ze-Austenitic.Okulandelayo: ASTM A269/SA269