Sihlola amavalvu ebhola, amavalvu okuhlola, amavalvu esango, amavalvu eglobhu, amavalvu ovemvane, amavalvu okuvimba nawopha njenge-API6D & API 15000. Izinto ezisetshenziswayo zamavalvu zingakhiqizwa (isb ngokwe-ASTM A105 yokuqamba, i-ASTM A216 WCB yokusakazwa, i-ASTM I-A351 CF8M isakaza i-eel engagqwali kanye ne-duplex grade F51.