Txheej txheem cej luam ntawm roj av kav cov qauv kav dej
ASME SAK6, ASME SA179, ASME SA192, ASME SA192, ASME SA210, ASME SA213, ASME SA335, thiab lwm yam
ASME SAK6, ASME SA179, ASME SA192, ASME SA192, ASME SA210, ASME SA213, ASME SA335, thiab lwm yam