ASTM SA-249

Ngaphambili: ASTM A554 / ASME SA554 / Iipayipi zomatshini zentsimbi engatyiwayo ezidityanisiweyo

Okulandelayo: Umgangatho we-ASTM A312/SA312a weepayipi zentsimbi engatyiwayo ezingenamthungo nezidityanisiweyo ze-Austenitic.