MATERIAL :
Grey iron:HT200、HT250、HT300、HT350。
Ductile iron: QT400-15、QT450-10、QT500-7
ASTM A 216 WCB,WCC,LCC,LCB,CF8M,CF8,CD4MCU........
pressure test or ultrasonic,x-ray ,material element inspection by spectrometer
6`` valve body
An article?a href="http://www.epano.cn/show-15-69-1.html">12`` valve body Next article?a href="http://www.epano.cn/show-15-72-1.html">16`` ball