Stainless steel ball valves--NACE MR0175 ASME B16.34
Carbon steel ball valves--NACE MR0175 ASME B16.34
Forged steel ball valves--NACE MR0175 ASME B16.34 BS5351 API068
API 6D & API ball valves--NACE MR0175 ASME B16.34
Oilfield ball valves--NACE MR0175 ASME B16.34