Comparing with conventional tubing pump, sucker rod pump has better performance in corrosion resistance & anti-friction aspect. Plunger of it is nickel plated on alloy base, inside wall of barrel is plated with hard cadmium, key parts, such as valve hood, valve ball, are made of materials with excellent mechanical performance and corrosion resistant property. Compared with conventional pump, the series of pump has a longer working life. The pump adopts two pumps in series with different diameters to form a double-pump and single-action pump. During the operation, the upper and lower pumps suck and drain liquid simultaneously. The tail pipe is connected under the pump and a packer is installed between the tail pipe and the casing to separate the upper and lower oil level to realize separate layer production, which avoids the inference of layer difference and improves the pumping efficiency. Product Description: API-RHAM, Rod, Stationary Heavy Wall Barrel, Mechanical Top Anchor Pump API-RHAC, Rod, Stationary Heavy Wall Barrel, Cup Top Anchor Pump API-RHBM, Rod, Stationary Heavy Wall Barrel, Mechanical Bottom Anchor Pump API-RHBC, Rod, Stationary Heavy Wall Barrel, Cup Bottom Anchor Pump API-RWAM, Rod, Stationary Thin Wall Barrel, Mechanical Top Anchor Pump API-RWAC, Rod, Stationary Thin Wall Barrel, Cup Top Anchor Pump API-RWBM, Rod, Stationary Thin Wall Barrel, Mechanical Bottom Anchor Pump API-RWBC, Rod, Stationary Thin Wall Barrel, Cup Bottom Anchor Pump API-RHBM-AC, Rod, Stationary Heavy Wall Barrel, Mechanical Bottom Anchor And Cup Top Anchor Pump Sucker rod pump is equipped with a seating nipple(there are two seating nipples in API-RHBM-AC) , seating nipple connection is on the tubing string, down to the bottom of the well with the tubing string. Plunger assembly connection is on the sucker rod string and with the pump overall down to seating nipple position together , pump with fixed inside the seating nipple.Plunger assembly with the sucker rod string up and down reciprocating movement to achieve pumping work. If the pump meet quality problem, it needn't to put forward the tubing string, only need to put the whole pump forward well through the sucker rod string together , operation is simple. Main parts process and material: Pump barrel: plain carbon steel plating (A1), ordinary carbon steel carbonitriding (B1), ordinary carbon steel carburizing (B2), low alloy steel nitride (B5). Plunger: 1045 steel spraying (B1), 1045 steel spraying (B2), 1045 steel chrome plating (A1), 1045 steel double chrome plating (A2). Valve ball and seat: stainless steel (A1), cobalt chromium (B2), tungsten carbide (C1), nickel and carbon compounds (C2), titanium carbide (C3). Other accessories: plain carbon steel, low alloy steel, stainless steel, brass and other materials.