HYDRIL

Pressure control equipment, namely, blowout preventers; Oil field pressure control equipment, namely, pressure control valves; automatic pressure control machines and instruments, namely, accumulators and pulsation dampeners; downloadable software for monitoring, operating, and controlling blowout preventers (bop) in the oil and gas production industry; electronic pressure control equipment for drilling, namely, ram blowout preventers and annular blowout preventers