Precision rolling pump barrel

Sanjack Petro manufactures precision rolling pump barrel in China. We have our own factory of precision rolling pump barrel. Sanjack Petro provides the high quality and competitive price on precision rolling pump barrel for you. Contact us now for precision rolling pump barrel quotation.

  • The Precision Rolling Pump Barrel has a variety of materials, such as brass, stainless steel, low carbon alloy steel, etc.
  • The Precision rolling process can ensure the dimensional precision of the pump barrel made of soft materials, such as brass, stainless steel.
  • After rolling, the quality control engineer will check with a pass gauge to ensure that the straightness ≤ 0.3mm/m, the wall thickness difference ≤ 0.2mm, and the roundness deviation ≤ 0.03mm.

Precision Rolling Pump Barrel

When it comes to barrel type, these pumps can be categorized as heavy-wall, thin-wall, and heavy-wall with thin-wall thread configuration. This is discussed below:


These are pumps with wall tubing that measure between 0.393 and 0.472 inches.

They are threaded externally, which allows the plunger to stroke out at both sides of the pump.

This stroke-through construction created in the process prevents the formation of scale inside the pump barrel.

Heavy-walled barrels are stronger and more rigid to ensure greater setting depth. Additionally, they come in two types; with a metal plunger (H) and a soft-packed plunger (P).


This is a type of pump with wall tubing measuring between 0.197 and 0.276 inches.

They are threaded internally and have the most massive bore relative to any given tubing size. Accordingly, these pumps are suitable for moderate wellbore depth and come in two categories: a metal plunger (W) and a soft-pack plunger (S).

Thick – wall and thin – wall pumps barrel are honed to complete the final process.

But when the materials are special, such as stainless steel or brass, or the cylinder diameter is too large, the honing process cannot meet the accuracy requirements of the barrel.

At this time, the Precision rolling process can only be used for the manufacture of the pump barrel.

The precision rolling pump barrel parameters

Barrel specification Nominal Dia.      (in) I.D.  Tolerance(mm) Wall thickness Material Plunger specification O.D. tolerance(mm) Length (in)
Φ32 1 1/4” ±0.05 3/50”







1.Carbon steel 1020、1026、1045 etc);


3.Alloy steel

304、316、316L、S50100、4130、13Cr、P9 etc.

Φ32 ±0.05 4’-6’
Φ38 1 1/2” ±0.05 Φ38 ±0.05
Φ44 1 3/4” ±0.05 Φ44 ±0.05
Φ50 2” ±0.05 Φ50 ±0.05
Φ57 2 1/4” ±0.05 Φ57 ±0.05
Φ70 2 3/4” ±0.10 Φ70 ±0.10
Φ83 3 1/4” ±0.10 Φ83 ±0.10
Φ95 3 3/4” ±0.10 Φ95 ±0.10
Φ108 4 1/4” ±0.10 Φ108 ±0.10
Φ220 8 5/8” ±0.10 Φ220 ±0.10
Φ280 11” ±0.10


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