1. Introduction of pump
The subsurface sucker rod pumps are manufactured in accordance with API 11AX, and have been API monogrammed and ISO 9001 licensed. Technology was introduced from USA in 1980's. More than 40 models and sizes of sucker rod pumps are available with the diameter ranging from 28 mm to 108 mm. Annual production capacity: 150, 000 sets.

Conventional pump types: rod pump, tubing pump and special purpose pump.

 
2. Structure of pump

The main spare parts of subsurface sucker rod pumps are barrel, plunger and valve.

 
3. Specification

3.1. Type of barrel: chrome plated or carbonitrided surface
3.2. Type of plunger: metal spray or chrome plated surface
3.3. Valve ball and seat materials: stainless steel, Cobalt alloy, tungsten carbide and Titanium carbide
3.4. Pump designation:
3.4.1 RHAM: Stationary Heavy Wall Barrel, Top Anchor, Mechanic Seating, Rod Pump
3.4.2 RHBM: Stationary Heavy Wall Barrel, Bottom Anchor, Mechanic Seating, Rod Pump
3.4.3 RHAC: Stationary Heavy Wall Barrel, Top Anchor, Cup Seating, Rod Pump
3.4.4 RHBC: Stationary Heavy Wall Barrel, Bottom Anchor, Cup Seating, Rod Pump
3.4.5 RHT: Traveling Heavy Wall Barrel, Bottom Anchor, Rod Pump
3.4.6 RWA: Stationary Thin Wall Barrel, Top Anchor, Rod Pump

3.4.7 RWB: Stationary Thin Wall Barrel, Bottom Anchor, Rod Pump
3.4.8 RWT: Traveling Thin Wall Barrel, Bottom Anchor, Rod Pump
3.4.9 RSA: Stationary Thin Wall Barrel, Top Anchor, Soft-packed Plunger, Rod Pump
3.4.10 RSB: Stationary Thin Wall Barrel, Bottom Anchor, Soft-packed Plunger, Rod Pump

3.4.11 THM: Heavy Wall Barrel, Mechanic Seating, Tubing Pump 

3.4.12 THC: Heavy Wall Barrel, Cup Seating, Tubing Pump

Specification