1.4 1/16" 15,000# 103.2 mm 104,000 kpa Frac head. 2.For oil well head equipment ... /Environment Certificated 4 1/16" 15,000# 103.2 mm 104,000 kpa Frac head for oil well equipment partsFrac head ... valve, check valve) 3) Bop(Annular/Ram BOP) We are a API/ISO certified enterprice →Head office in Shanghai ,2 plants ... our customers 4 1/16" 15,000# 103.2 mm 104,000 kpa Frac head