Latch Pin Cylinder Lines for ZJ40 Drilling Rig (Z07320000004AA)

1

Latch pin cylinder lines

Z07320000004AA

Reinforced seamless carbon steel (20#) with anti-corrosion coating

1. Abrasion from drilling mud and debris; 2. Fatigue damage from long-term vibration; 3. Corrosion from moisture and salt spray (coastal oilfields).

1. Regularly clean the line surface to remove mud and debris; 2. Secure with pipe clamps to reduce vibration; 3. Apply anti-corrosion grease to exposed areas during idle periods.

1

Hose assembly 10I-1000

1101003021

Nitrile rubber (NBR) inner layer, high-carbon steel wire braid reinforcement, wear-resistant synthetic rubber outer layer

1. Kinking during rig movement; 2. Abrasion from contact with rig components; 3. Aging and fatigue from long-term high-pressure use.

1. Route hoses to avoid kinking and tight bends; 2. Use pipe clamps to keep hoses away from moving parts; 3. Replace every 12 months or if cracks/bulges appear.

2

Hose assembly 10I-900

1101003020

Nitrile rubber (NBR) inner layer, high-carbon steel wire braid reinforcement, wear-resistant synthetic rubber outer layer

1. Excessive pressure beyond rated capacity; 2. Damage from sharp debris in the oilfield; 3. Poor connection leading to leakage and pressure loss.

1. Ensure system pressure does not exceed hose rating; 2. Inspect for debris damage daily; 3. Tighten connections regularly to prevent leakage.

3

Hose assembly 10I-1200

1101003024

Nitrile rubber (NBR) inner layer, high-carbon steel wire braid reinforcement, wear-resistant synthetic rubber outer layer

1. Thermal aging from extreme temperature fluctuations; 2. Fatigue from repeated bending during latch pin operation; 3. Contaminated hydraulic fluid causing inner layer damage.

1. Avoid exposing hoses to extreme temperatures (-25℃ to 70℃); 2. Minimize unnecessary bending during installation; 3. Replace hydraulic fluid regularly to keep it clean.

4

Hose assembly 10I-1300

1101003023

Nitrile rubber (NBR) inner layer, high-carbon steel wire braid reinforcement, wear-resistant synthetic rubber outer layer

1. Crushing from heavy rig components; 2. Corrosion of steel wire braid from saltwater (coastal areas); 3. Loose fittings causing pressure surge damage.

1. Install hoses in areas free from heavy component contact; 2. Use anti-corrosion coating for coastal applications; 3. Inspect fittings for tightness monthly.

5

Hose assembly 13II-1500

1101006050

Fluororubber (Viton) inner layer, double high-carbon steel wire braid reinforcement, wear-resistant synthetic rubber outer layer

1. Chemical erosion from drilling fluids; 2. High-pressure fatigue over prolonged use; 3. Abrasion from sand and dust in dry oilfields.

1. Clean hoses immediately after contact with drilling fluids; 2. Monitor system pressure to avoid overload; 3. Cover hoses with protective sleeves in dusty environments.

6

Hose assembly 13II-1700

1101006051

Fluororubber (Viton) inner layer, double high-carbon steel wire braid reinforcement, wear-resistant synthetic rubber outer layer

1. Aging from long-term exposure to sunlight and moisture; 2. Kinking during rig transportation; 3. Inner layer damage from contaminated hydraulic fluid.

1. Store hoses in shaded areas when not in use; 2. Secure hoses properly during transportation to avoid kinking; 3. Use high-quality hydraulic oil filters to prevent contamination.

1

Steel pipe 20 L≈13m

P9971757AA

Seamless carbon steel (20#) with zinc plating for anti-corrosion

1. Corrosion from drilling mud and moisture; 2. Bending or deformation from external impact; 3. Leakage at connection points due to loose fittings.

1. Regularly inspect for corrosion and touch up with anti-corrosion paint; 2. Avoid impact from heavy tools and rig components; 3. Tighten connection fittings to specified torque monthly.

1

NPT1/2"-NPT3/8" bushing

QBJ10010403

Brass (H62) with nickel plating

1. Thread damage from over-tightening during installation; 2. Corrosion from moisture and drilling fluids; 3. Seal failure due to debris on thread surfaces.

1. Tighten to specified torque (do not over-tighten); 2. Clean threads before installation to remove debris; 3. Apply anti-corrosion thread sealant for coastal applications.

2

M18X1.5-NPT3/8" fitting

QBJ5011803

Carbon steel (45#) with zinc plating

1. Fatigue from long-term rig vibration causing loosening; 2. Thread wear from repeated disassembly; 3. Corrosion of unplated areas.

1. Use lock washers to prevent loosening from vibration; 2. Minimize unnecessary disassembly; 3. Inspect for plating damage and touch up with anti-corrosion paint.

3

NPT1/2" tee

QBJ806040404

Brass (H62) with nickel plating

1. Pressure surge damage from sudden hydraulic system changes; 2. Corrosion from acidic drilling fluids; 3. Loosening of branch connections.

1. Ensure system pressure is within fitting rating; 2. Flush lines regularly to remove acidic residues; 3. Inspect branch connections monthly for tightness.

4

NPT1/2"-NPT1/2" fitting

QBJ5220404

Carbon steel (45#) with zinc plating

1. Abrasion from contact with other rig components; 2. Thread damage from improper installation tools; 3. Corrosion from salt spray in coastal oilfields.

1. Install in areas free from component contact; 2. Use proper wrenches to avoid thread damage; 3. Apply anti-corrosion grease to exposed surfaces.

5

M22X1.5-NPT1/2" fitting

QBJ5012204

Carbon steel (45#) with zinc plating

1. Seal failure due to worn O-rings; 2. Thread damage from over-tightening; 3. Fatigue from long-term high-pressure use.

1. Replace O-rings every 6 months as a preventive measure; 2. Tighten to specified torque; 3. Inspect for cracks or deformation quarterly.

1

U type bolt

P2200610AA

High-strength carbon steel (Q235) with hot-dip galvanizing

1. Loosening from long-term rig vibration; 2. Corrosion from drilling mud and moisture; 3. Fatigue damage from over-tightening.

1. Tighten to specified torque and recheck monthly; 2. Clean regularly to remove mud and apply anti-corrosion grease; 3. Avoid over-tightening to prevent thread fatigue.

2

Angle steel

P9810492AA

Carbon steel (Q235) with anti-corrosion paint coating

1. Corrosion from exposure to moisture and drilling fluids; 2. Bending or deformation from external impact; 3. Paint peeling leading to accelerated corrosion.

1. Touch up peeling paint immediately; 2. Avoid impact from heavy tools and rig components; 3. Clean regularly to remove mud and debris.

3

NPT1/2" pipe clamp

QBJ11040438

Carbon steel (Q235) with zinc plating and rubber gasket

1. Rubber gasket aging and hardening from extreme temperatures; 2. Corrosion of the steel clamp body; 3. Loosening from vibration causing hose/pipe damage.

1. Replace rubber gaskets every 6 months; 2. Inspect for corrosion and replace if needed; 3. Tighten clamp bolts monthly to prevent loosening.

4

Nut M10

4309300010

Carbon steel (8.8 grade) with zinc plating

1. Thread wear from repeated tightening/loosening; 2. Corrosion from moisture and drilling mud; 3. Fatigue failure from over-tightening.

1. Replace nuts after 3-4 disassembly cycles; 2. Clean threads before installation; 3. Use torque wrenches to ensure proper tightening.

5

Washer 10

4313000010

Carbon steel (Q235) with zinc plating

1. Deformation from over-tightening; 2. Corrosion leading to rust and reduced load-bearing capacity; 3. Wear from friction with nuts and mounting surfaces.

1. Do not over-tighten nuts to avoid deformation; 2. Replace washers if rusted or deformed; 3. Ensure washers are properly aligned during installation.

Are these components compatible only with the ZJ40 Drilling Rig?

Yes, all components—including the main latch pin cylinder lines (Z07320000004AA) and all sub-components—are exclusively designed for the ZJ40 Drilling Rig. They are not interchangeable with other ZJ series rigs or non-ZJ rigs, as dimensions, thread standards (NPT, M-thread), and pressure ratings are tailored to the ZJ40’s latch pin cylinder system. Using non-compatible parts will cause leakage, pressure loss, or system failure.

How often should I replace the hydraulic hose assemblies for the latch pin cylinder lines?

We recommend replacing all hose assemblies every 12 months as a preventive measure. In harsh environments (dusty, muddy, or coastal oilfields), replace them every 9 months. If you notice any signs of wear—cracks, bulges, kinking, or leakage—replace the affected hose immediately to avoid burst and unplanned downtime.

What should I do if I notice hydraulic leakage from the latch pin cylinder lines?

If you detect leakage: 1. Stop the rig’s hydraulic system immediately to prevent further fluid loss. 2. Locate the leak (check fittings, hoses, and pipe connections). 3. Replace worn seals, O-rings, or damaged components (hoses, fittings). 4. Clean the connection surface, apply thread sealant if needed, and tighten fittings to specified torque. 5. Refill the hydraulic system with clean oil and test for leaks before resuming operations.