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High Chrome Sleeve Liner

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Features

  • Rated for all drilling operation up to 7500 PSI
  • Bore hardness is 62-69 Rockwell
  • "HP" lip design to prevent inner sleeve slippage
  • Extremely long service life
  • Centrifugally cast high chrome iron sleeve
  • Machined and heat treated to a minimum uniform bore hardness of 62 RC
  • Machined to close tolerances to assure ease of installation and long liner life with inside diameter honed to a mirror-like finish for smooth even wear during the life.
  • Superior performance under tough corrosive and abrasive conditions

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Inner Sleeve

  • Hy-chrome forged steel (centrifugal forged)
  • Annealing hardness: HRC≤40
  • Quenching hardness: HRC 59-67

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Outer Sleeve

  • 45#forged steel
  • Tensile strength is σb > 610 Mpa
  • Yield strength is σs > 450 Mpa
  • Elongation is σ > 17%
  • Hardness is HRC 180-200

Chrome-Plated Liners

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Features

  • Material: 45#forged steel 
  • Tensile strength: σb > 610 Mpa 
  • Yield Strength: σs > 450 Mpa
  • Elongation: σ>17%
  • Hardness: HRC 180-200

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Features

  • Premium forged alloy steel
  • Chrome plate .010-.015” depth
  • 62-65 Rockwell C hardness
  • Long lasting service life

Hardened Liners

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Grab interestFeatures

  • Hardened and heat treated under strict quality control to a minimum of 60 RC hardness and a depth of 125 inches
  • Honed to a mirror-like finish for smooth and even wear during the life
  • Machined to close tolerances to assure easy installation and long life

About UsCeramic / Zirconia Liners

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Zironia Liner

  • Zironia exhibits better impact strength
  • Zironia is harder than alumina
  • Zironia can be honed to finer surface finishes than alumina. 
  • Finished to 4 RMS, providing a surface finish that’s three to four times finer than alumina.

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Features

  • HP design with shoulder-on-hull design to prevent sleeve slippage
  • Reduced liner and piston wear
  • Increased impact characteristic
  • Lower thermal load on the liner wash system
  • Higher thermal ratings
  • Good performance on the high temperature application
  • Surface finish: 4-- - 8 RMS
  • Hardness: HV 0.3 kg/mm – 1100/1200 (92 -94 Rc)
  • I.D. tolerances: +.010” / -.000”
  • Liner sizes: 4 ½ “ to 7"
  • Recommend using together with urethane piston

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Performance Comparison

Valves & Seats

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Full Open

APT Full open valve and seat is designed designed for Maximum Flow Characteristics with the combination of strength of a forged alloy steel upper body with precision casting to minimize flow restriction and fluid turbulence.

  • Forged alloy steel AISI4119 construction
  • Heavey-duty valve design
  • Deep carburized wear surfaces
  • Heavy-duty durable retainer threads
  • Taper post-heat treat machined to remove warpage
  • Working life: ≥ 500 h

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Four-Web

APT Four-web valve and seat is designed for maximum flow characteristics by adopting premium forged steel with the performance of high strength and high hardness. The rubber is fixed on the valve body, the seats have high strength and resistance to impact, suitable for high pressure jet drilling.

  • Forged alloy steel AISI4119 construction
  • Heavey-duty valve design
  • Deep carburized wear surfaces
  • Heavy-duty durable retainer threads
  • Taper post-heat treat machined to remove warpage
  • Working life: ≥ 500 h

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Three-Web

APT Three-web valve and seat is designed to enable maximum flow charactristcs, offering additional bearing area for valve that minimize stress and promotes a long service life.

  • Forged alloy steel AISI4119 construction
  • Heavey-duty valve design
  • Deep carburized wear surfaces
  • Heavy-duty durable retainer threads
  • Taper post-heat treat machined to remove warpage
  • Working life: ≥ 500 h

Piston & Assembly

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Premium Replacement Piston

APT premium replacement pistons, fully interchangeable with other API standard designed pistons.

Rubbers are made with tough and durable Buna N Rubber for all pressures, ideally suited for either oil-base or water-base mud. The special processed fabric provides an unusual waterproof bond of seals to piston which assures a longer life with high tensile strength rated with resistance to chemicals, hydrocarbo for all drilling conditions.

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Rubber Bonded Piston (HNBR or NBR)

The one-piece bonded comstructed piston is desiged and manufactured to handle the tough assignments encountered during ladn and offshore drilling. A spcecial processing of the fabric eliminates leakage points and resistance to abrasion. The fluid expanded lip is not damged by high presure and fast pump strokes. The Fail-Safe piston seals off to greater diameter as liner wears.

  • High tensile strength
  • Performs best in water-based mud
  • Excellent chemical and abrasion resistance 
  • Maximum operating temperature of 482°F
  • Extended service life

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High Temperature Urethane Bonded Piston

High Temprature Urethane Bonded Piston is designed to perform in the harshest of drilling conditions with compatible applcations and mud types.

  • Withstand operating temperature up to 300°F
  • With pressure up to 7500 psi
  • Proven, reliable performance in every piston
  • Resistance to high pressure, abrasion, heat and extrusion
  • Multi-durometer bonded urethane allows for longer life

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Green Duo Urethane Bonded Piston

Green Duo Urethane Bonded Piston is constructed of oil-resistant polyurethane bonded to a solid metal hub, offering a longer service life than replacment rubber pistons. As fluid pressure increases, the urethane surface of the piston expands against the liner to complete the seal, even in the enlarged diameter of a worn liner bore.

  • Manufactured from advacned polymer compounds
  • Increased mechanical values provide resistance to headabrasion and extrusion
  • Capable of operating in fluid temperature up to 180°F


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Bullnose Urethane Piston

Engineered to perform in the harshest drilling conditions, APT “Bullnose” is composed of multi-durometer bonded urethane for superior performance with longer life.

  • Withstand operating temperature up to 220°F
  • With pressure up to 7500 psi
  • Cut back hub design dramatically reduces wear on the liner 
  • Resistant to higher pressure, abrasion, heat and extrusion

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Piston Rods

Piston rods are made with premium grade, heat treated alloy steel, offering excellent resistance to fatigue, corrosion and heavy loads. A full line of piston rods are available for various pumps.

  • Withstand operating temperature up to 220°F
  • With pressure up to 7500 psi
  • Cut back hub design dramatically reduces wear on the liner
  • Resistant to higher pressure, abrasion, heat and extrusion