1. API certificate 2.Tubing size:15-40 in. OD 3.Pump bore: 125-375 4.Barrel length:8-30ft 5.Plunger ... ) RHAM: Stationary Heavy Wall Barrel, Top Anchor, Mechanic Seating, Rod Pump 2) RHBM: Stationary Heavy Wall Barrel, Bottom Anchor, Mechanic Seating ... -packed Plunger, Rod Pump 11) THM: Heavy Wall Barrel, Mechanic Seating, Tubing Pump 12) THC: Heavy Wall Barrel, Cup Seating, Tubing Pump API 11AX sucker ...