HIGH CHROME SLEEVE LINER

The outer hull, or body, of the liner is manufactured using high-strength forging. STL uses forgings exclusively to ensure consistent quality, The sleeve is centrifugally cast in the STL facilities by skilled craftsmen. lt has the maximum amount of chrome for the base metal and STL adds molybdenum to increase the hardness depth. The sleeve is then inserted into the hull at a tightness at exceeds its counterparts. The STL liner is rated to match the pressure rating of the pump per liner size.

CHROME-PLATED LINERSTL

Chrome-plates the same outer hull in lieu of the sleeve to maximum thickness. The hulls are then machined and polished to a mirror finish.

CHROME-PLATED LINERSTL

Chrome-plates the same outer hull in lieu of the sleeve to maximum thickness. The hulls are then machined and polished to a mirror finish.

ZIRCONIA CERAMIC LINER

STL's zirconia liners offer lifetime cost savings, significantly longer service, better performance, and safer operation than those made of more commonly used alumina ceramic.

PINK LINER

After years of research, STL has independently developed drilling mud pumps liner “pink girl” that have obtained national patents.

STL mud pump liners are unsurpassed in quality and reliability.

HIGH CHROME SLEEVE LINER

Features

      ·       Bore hardness is 62-69 Rockwell.

      ·       "HP" lip design to prevent inner sleeve.

      ·       Slippage, extremely long service life.

ZIRCONIA CERAMIC LINER

STL's zirconia liner is a proprietary Zirconium-based matrix that has significantly improved mechanical characteristics. Zirconia has three important property advantages compared to alumina.

      ·       Zirconia exhibits better impact strength.

      ·       Zirconia is harder than alumina.

      ·       Zirconia can be honed to finer surface finishes than alumina, Finished to 4 RMS, the zirconia liners provide a surface finish that is three to four times finer than alumina.

All three of these property advantages translate to lower ownership costs. The improved wear directly extends the service life of the sleeve, while the improved impact strength significantly reduces the costs of replacing broken liners in the field. The surface finish improvements, meanwhile, have an indirect effect. The finer surface finish means friction with the elastomer-and-metal pump pistons, which in turn extends piston life and reduces pump-cooling requirements.

      ·       Reduced liner and piston wear.

      ·       Increased impact characteristics.

      ·       Lower thermal load on the liner wash system.

      ·       Higher thermal ratings.

      ·       HP design with shoulder-on-hull to prevent sleeve slippage.

      ·       D tolerances of +.010"/-.000"

      ·       Surface finish of 4-8 RMS.

      ·       Hardness is HV 0.3 kg/mm -1100/1200 (92-94 Rc).

      ·       Improved performance for high temperature applications.

      ·       Liner sizes are available from 4"-8" for all popular mud pumps.

PINK LINER

      ·       It is resistant to corrosion, acid and alkali.                            

      ·       High hardness, good wear resistance, able to resist high-pressure mud various sharp or highly abrasive solid particles in the slurry grinding or scouring, such as rock cuttings, quartz sand, iron ores, iron filings, etc.

      ·       The microstructure is uniform and fine, without closed pores, and the product high surface finish is beneficial for improving the lifespan of the corresponding piston.

      ·       The addition of rare earth and chromium components, on the one hand, increases heat dissipation capacity, which is beneficial for improving the service life of the piston. On the other hand, it contains rare earth and metal components such as chromium, which is beneficial for RFID readers to recognize the built-in RFID tags on the cylinder liner and more accurately grasp the operation of the cylinder liner.

      ·       The working pressure of the pink girl liner is high, which can meet the requirements of the rated pressure of the mud liner, with a maximum of 52MPa (7500PSI), meeting the needs of drilling deep and ultra deep wells.