Fluid End & Cylinder Related Parts Catalog for ZJ40 Truck-mounted Drilling Rig (SJ Petro)-1

1

Studded Assembly, Fluid end (107.29.111.00)

42CrMo alloy steel stud; 35CrMo alloy steel nut; zinc-nickel plating for corrosion resistance

1. Thread wear and fatigue fracture due to long-term high-pressure pulsation; 2. Corrosion caused by mud splashing and outdoor moisture

1. Torque the nuts according to API Spec 7K Clause 5.6.3 requirements (recommended torque: 850-900 N·m) during installation; 2. Clean the stud surface regularly and apply anti-corrosion grease to exposed threads

2

Valve Pot Cover, Fluid end (107.29.110.01)

QT450-10 ductile iron; anti-corrosion paint coating; nitrile rubber seal groove

1. Deformation caused by uneven tightening torque; 2. Seal groove wear due to repeated disassembly and assembly

1. Use a torque wrench to tighten the fixing bolts evenly (torque difference ≤ 50 N·m); 2. Inspect the seal groove for wear during maintenance, and repair if the wear depth exceeds 0.2 mm

3

Valve Guide (107.29.110.09)

2Cr13 stainless steel; precision grinding; carburizing and quenching treatment

1. Inner hole wear caused by long-term reciprocating friction of the valve stem; 2. Corrosion caused by the invasion of corrosive mud impurities

1. Regularly inject lubricating grease that meets API Spec 16D requirements into the guide gap; 2. Install a mud filter at the pump inlet to reduce impurity content

4

Lower Valve Guide (107.29.113.00)

40CrNiMoA alloy steel; nitriding treatment; wear-resistant copper alloy lining

1. Lining ablation caused by insufficient lubrication and high-temperature friction; 2. Bending deformation caused by lateral force of the valve stem

1. Check the lubricating oil supply pressure weekly (minimum pressure ≥ 0.3 MPa); 2. Inspect the coaxiality of the valve guide and valve seat monthly, and adjust if the deviation exceeds 0.15 mm

5

Retainer Valve Guide (107.29.110.10)

45# carbon steel; heat treatment; zinc plating

1. Fatigue failure caused by long-term vibration of the pump; 2. Loosening and falling off due to insufficient fixing torque

1. Use thread locking glue during installation to enhance anti-loosening performance; 2. Inspect the retainer for deformation and tightness every 300 operating hours

6

Wear Plate (107.29.110.12)

High-chromium cast iron (Cr26); hardfacing treatment; hardness HRC ≥ 60

1. Abrasive wear caused by high-velocity mud containing sand particles; 2. Cracking due to thermal shock during rapid temperature changes

1. Avoid sudden injection of low-temperature mud into the high-temperature pump body; 2. Replace the wear plate when the wear thickness exceeds 5 mm (refer to ZJ40 Rig Maintenance Manual Clause 6.3.2)

1

Discharge Manifold (107.29.110.02)

Q355B alloy steel; internal anti-corrosion lining; flange connection design

1. Internal lining wear caused by long-term high-pressure mud scouring; 2. Flange deformation due to uneven heating

1. Regularly inspect the internal lining thickness (minimum thickness ≥ 8 mm); 2. Avoid local heating of the manifold during winter preheating, and heat evenly

2

Head, Cylinder (107.29.110.13)

42CrMo alloy steel; forging forming; precision machining

1. Thread hole wear caused by repeated disassembly of bolts; 2. Cracking due to high-pressure mud impact

1. Use bolt repair sleeves when the thread wear exceeds 2 threads; 2. Operate the pump smoothly to avoid sudden pressure surges (maximum pressure ≤ 35 MPa)

3

Ring, Cylinder Head (107.29.110.14)

2Cr13 stainless steel; spring steel structure; corrosion-resistant

1. Elastic fatigue and deformation due to long-term compression; 2. Corrosion caused by mud infiltration

1. Replace the cylinder head ring every 800 operating hours; 2. Apply a layer of anti-corrosion sealant on the ring surface during installation

4

Manifold, Suction (107.29.112.00)

Q355B alloy steel; large-diameter flow channel; anti-abrasion treatment

1. Flow channel wear at the inlet caused by high-velocity mud suction; 2. Loosening of the connecting flange due to pump vibration

1. Install a vibration-damping pad between the manifold and the pump base; 2. Inspect the flange connection tightness weekly and retighten if necessary

5

Flange, Suction (107.29.110.03)

304 stainless steel; flange face machining; nitrile rubber gasket

1. Gasket damage caused by over-tightening torque; 2. Flange face corrosion caused by outdoor moisture

1. Tighten the flange bolts according to API Spec 6A Clause 4.3.2 (torque: 320-350 N·m); 2. Clean the flange face regularly and apply anti-corrosion grease

6

Flange, Blind (107.29.110.04)

Q235B carbon steel; galvanized finish; sealed with blind plate gasket

1. Galvanized layer peeling due to impact; 2. Seal failure caused by foreign objects on the flange face

1. Avoid collision with the blind flange during transportation and installation; 2. Clean the flange face thoroughly before installation to remove foreign objects

7

Plug, Cylinder Head (107.29.115.00)

Brass; tapered thread; PTFE sealing tape

1. Thread wear caused by repeated disassembly; 2. Sealing failure due to mud contamination of the thread

1. Reapply PTFE sealing tape every time the plug is disassembled; 2. Tighten the plug to the specified torque (45-50 N·m) to avoid thread damage

8

Ring, Alignment (107.29.114.00)

45# carbon steel; heat treatment; precision grinding

1. Wear caused by long-term mutual friction of aligned components; 2. Deformation caused by improper installation

1. Check the alignment accuracy during installation (coaxiality deviation ≤ 0.1 mm); 2. Apply lubricating grease between the alignment ring and the mating surface

1

Valve and Seat (060155041)

Tungsten carbide valve core; nitrided steel valve seat; hardfacing wear-resistant layer

1. Wear of the valve core and seat sealing surface caused by abrasive mud; 2. Cracking due to thermal shock

1. Control the mud solid content ≤ 15% (weight percentage); 2. Avoid rapid switching of the valve during high-temperature operation

2

Valve and Seat (061101507)

Ceramic valve core; 2Cr13 valve seat; corrosion-resistant coating

1. Corrosion of the valve seat caused by acidic mud; 2. Damage to the ceramic valve core due to impact

1. Test the mud pH value regularly (pH ≥ 7.5); 2. Handle the valve core with care during installation to avoid collision

3

Spring, Valve (055413397)

50CrVA spring steel; heat treatment; shot peening

1. Fatigue fracture due to long-term reciprocating compression; 2. Corrosion caused by mud infiltration

1. Replace the valve spring every 600 operating hours; 2. Install a dust cover to prevent mud from entering the spring cavity

4

Shear Relief Valve (AQF-IIA)

2Cr13 stainless steel valve body; 40Cr valve core; FKM seal

1. Seal failure due to long-term high-pressure impact; 2. Blockage of the shear pin hole caused by mud impurities

1. Calibrate the relief pressure monthly according to the rated pressure (28 MPa); 2. Clean the shear pin hole regularly and replace the shear pin if damaged

5

O Ring Rubber (7602-1600-25)

FKM (Viton) rubber; Shore hardness 75±5; compliant with ISO 6195:2018

1. Aging and cracking due to long-term contact with high-temperature mud; 2. Damage caused by burrs on the mating surface

1. Store O-rings in a cool, dry environment (temperature 5-25°C); 2. Deburr the mating surface before installation and apply compatible lubricant

6

O Ring Rubber (7602-1600-52)

Nitrile rubber (NBR); Shore hardness 70±5; oil-resistant and corrosion-resistant

1. Swelling and deformation due to contact with incompatible chemicals in the mud; 2. Wear caused by micro-vibration

1. Confirm that the mud chemical composition is compatible with NBR rubber; 2. Install the O-ring in the correct groove to avoid eccentric wear

7

O Ring Rubber (7602-1600-61)

EPDM rubber; Shore hardness 65±5; weather-resistant

1. Aging caused by outdoor ultraviolet radiation; 2. Damage caused by over-compression

1. Cover the O-ring with a protective sleeve when exposed outdoors; 2. Control the compression amount within 20-30% of the O-ring diameter

8

Seal, Ring Joint (7602-0661-11)

Copper alloy; precision machining; compatible with API 6A flange

1. Deformation caused by over-tightening torque; 2. Corrosion caused by saltwater mud (offshore drilling)

1. Tighten the flange bolts according to the specified torque (380-420 N·m); 2. Apply anti-corrosion paste on the seal surface for offshore drilling

9

Seal, Valve Pot Cover (107.29.110.18)

Nitrile rubber + stainless steel skeleton; heat-resistant up to 120°C

1. Wear caused by repeated opening and closing of the valve pot cover; 2. Hardening and cracking due to high-temperature mud

1. Replace the seal every time the valve pot cover is disassembled; 2. Avoid direct contact between the seal and high-temperature mud

10

Seal, Head (107.29.110.19)

PTFE composite material; high-pressure resistant; low friction coefficient

1. Wear caused by reciprocating movement of the piston rod; 2. Damage caused by foreign particles

1. Install a scraper ring at the piston rod inlet to remove foreign particles; 2. Inspect the seal for wear monthly and replace if necessary

11

Seal (107.05C.03)

Viton rubber; corrosion-resistant to strong acid and alkali; high-pressure resistant

1. Aging caused by long-term contact with corrosive mud additives; 2. Damage caused by improper installation

1. Check the compatibility of mud additives with Viton rubber; 2. Use professional installation tools to avoid over-stretching

1

Bolt, Valve Guide Lock (107.29.110.11)

42CrMo alloy steel; heat treatment; black oxide finish

1. Thread wear caused by cross-threading during installation; 2. Fatigue fracture due to pump vibration

1. Align the bolt correctly during installation to avoid cross-threading; 2. Use thread locking glue to enhance anti-loosening performance

2

Lock, Liner (107.29.110.15)

35CrMo alloy steel; heat treatment; precision machining

1. Wear caused by long-term mutual friction with the liner; 2. Loosening caused by high-pressure pulsation

1. Inspect the lock tightness weekly; 2. Replace the liner lock when the wear depth exceeds 1 mm

3

Liner Lock Thread Ring (107.29.110.16)

40Cr alloy steel; thread quenching; corrosion-resistant

1. Thread wear caused by repeated disassembly; 2. Deformation caused by over-tightening

1. Tighten the thread ring according to the specified torque (550 N·m); 2. Check the thread for damage during maintenance and repair if necessary

4

Screw LNB/AC1-1-07

45# carbon steel; heat treatment; galvanized

1. Corrosion caused by outdoor moisture and mud splashing; 2. Head damage caused by improper tool use

1. Use a matching screwdriver to avoid slipping and damaging the screw head; 2. Apply anti-corrosion grease to the screw surface

5

Screw GB/T67-2000

304 stainless steel; compliant with GB/T67-2000 standard; passivated surface

1. Corrosion caused by acidic mud; 2. Thread wear due to repeated disassembly

1. Regularly clean the screw surface to remove mud residues; 2. Replace the screw when the thread wear exceeds 2 threads

6

Screw LNB/AC1-2-05

42CrMo alloy steel; high-strength thread; black oxide finish

1. Fatigue fracture due to long-term high-pressure vibration; 2. Thread sliding caused by over-tightening

1. Tighten the screw to the specified torque (120-150 N·m); 2. Inspect the screw for fatigue cracks quarterly

7

Screw LNB/AC1-1-05

35CrMo alloy steel; heat treatment; zinc-nickel plating

1. Corrosion caused by saltwater in offshore drilling; 2. Wear caused by micro-vibration

1. Use anti-corrosion paint to coat the exposed part for offshore drilling; 2. Use lock washers to reduce vibration impact

8

Nut, Heavy Hex (LNB/AC2-2-05)

42CrMo alloy steel; heavy hexagon design; heat treatment

1. Thread wear caused by repeated disassembly; 2. Deformation caused by improper tool clamping

1. Use a heavy hexagon wrench for installation and disassembly; 2. Apply thread lubricant to reduce wear

9

Nut, Heavy Lock (LS7601-0720-58)

35CrMo alloy steel; locknut design; corrosion-resistant

1. Locking structure failure due to long-term vibration; 2. Corrosion caused by mud contamination

1. Inspect the locking performance monthly; 2. Clean the nut surface regularly to remove mud

10

Nut, Heavy Lock (107.35.124.00)

40Cr alloy steel; high-strength locknut; heat treatment

1. Thread wear caused by over-tightening; 2. Fatigue failure due to long-term load-bearing

1. Tighten the locknut according to the specified torque; 2. Replace the locknut every 1000 operating hours

11

Stud with Nuts (7601-1260-47)

42CrMo alloy steel stud; 35CrMo nut; zinc-nickel plating

1. Stud bending deformation due to uneven force; 2. Corrosion caused by outdoor environment

1. Ensure uniform force when tightening the nuts; 2. Cover the stud with a protective cover when not in use

12

Gasket (107.29.110.17)

Asbestos-free graphite composite; stainless steel skeleton; high-temperature resistant

1. Compression deformation due to over-tightening; 2. Deterioration caused by high-temperature mud vapor

1. Tighten the bolts to the specified torque to avoid over-compression; 2. Replace the gasket every time the assembly is disassembled

13

Vower Valve Guide Information Plate (107.29.110.05)

Stainless steel; anti-corrosion printing; waterproof adhesive

1. Printing fading caused by long-term outdoor exposure; 2. Damage caused by mud impact

1. Apply a layer of transparent protective film on the information plate; 2. Install the information plate in a position avoiding direct mud impact

14

Hose Assembly (107.29.116.00)

High-pressure rubber hose; 304 stainless steel fittings; wire braided reinforcement

1. Hose aging and cracking due to long-term high-pressure use; 2. Fitting leakage caused by vibration

1. Replace the hose assembly every 1200 operating hours; 2. Secure the hose with a clamp to reduce vibration

15

Elbow (7601-2570-89)

Brass; 90-degree angle; precision threads

1. Thread wear caused by repeated disassembly; 2. Body damage caused by pipeline vibration

1. Apply thread sealant during installation; 2. Install a vibration-damping pad near the elbow

16

Bushing (101-0401-03-19-001)

Copper-lead alloy; precision machining; oil-impregnated lubrication

1. Wear caused by relative rotation; 2. Corrosion caused by oil contamination

1. Check the lubrication status regularly; 2. Replace the bushing when the wear clearance exceeds 0.2 mm

17

Adapter (7601-2090-40)

316 stainless steel; multi-thread specification; corrosion-resistant

1. Thread wear caused by cross-threading; 2. Corrosion caused by corrosive mud

1. Confirm thread matching before installation; 2. Apply anti-corrosion grease to the thread

18

Wire (107.29.110.06)

Copper core; PVC insulation; oil-resistant and flame-retardant

1. Insulation aging caused by high-temperature environment; 2. Wire breakage caused by vibration

1. Keep the wire away from high-temperature components; 2. Secure the wire with a clip to reduce vibration

19

Pipe, Connector (LS1292Z.01.40.00)

304 stainless steel; quick-connect design; nitrile rubber seals

1. Seal failure due to frequent connection and disconnection; 2. Corrosion caused by outdoor moisture

1. Minimize unnecessary connection and disconnection; 2. Cover with a dust cap when not in use