BOP Handling Device Parts Catalog

1

BOP Handling device General assembly

FY60-00

Q690 High-Strength Low-Alloy Steel (Welded & Stress-Relieved, Marine-Grade Anti-Corrosion Coated)

1. Weld joint fatigue cracking from cyclic load impact during BOP handling; 2. Structural deformation from transportation and hoisting impact.

1. Conduct ultrasonic testing (UT) of key weld joints every 6 months; 2. Use specialized lifting fixtures during transportation to avoid uneven stress and deformation.

2

Main body

FY60-02.00

Q690 High-Strength Steel (Forged & Precision Machined)

1. Abrasive wear at component connection interfaces from long-term vibration; 2. Corrosion in offshore saltwater or high-humidity environments.

1. Lubricate connection interfaces with high-pressure anti-wear grease monthly; 2. Apply marine-grade anti-corrosion coating annually and inspect for damage quarterly.

1

Movable pulley assembly

FY60-01.00

ZG35CrMo Cast Steel (Pulley Body) + GCr15 Bearing Steel (Bearings) + Copper Alloy (Bushings)

1. Pulley groove wear from long-term wire rope friction; 2. Bearing seizure due to lubrication failure and dust contamination.

1. Inspect pulley groove wear monthly; re-machine if wear depth exceeds 10% of wire rope diameter; 2. Lubricate bearings with high-temperature anti-wear grease every 50 operating hours.

2

Side movable pulley assemblyⅠ

FY60-03.00

ZG35CrMo Cast Steel (Pulley Body) + GCr15 Bearings + Copper Casing

1. Impact damage from BOP swing during handling; 2. Corrosion of assembly components in saltwater environments.

1. Install anti-swing devices to minimize BOP oscillation; 2. Apply marine-grade anti-corrosion coating to the entire assembly and inspect quarterly.

3

Driving pulley assembly

FY60-04.00

ZG35CrMo Cast Steel (Pulley Body) + Alloy Steel Gear (Integrated) + GCr15 Bearings

1. Gear tooth wear from meshing with driving components; 2. Torsional fatigue of pulley shaft from high-torque transmission.

1. Inspect gear teeth for wear and pitting monthly; replace if tooth thickness wear exceeds 15%; 2. Conduct magnetic particle testing (MPT) of the shaft annually to detect fatigue cracks.

4

Side movable pulley assemblyⅡ

FY60-06.00

ZG35CrMo Cast Steel (Pulley Body) + GCr15 Bearings + Copper Alloy Bushings

1. Wear of copper bushings from repeated rotational movement; 2. Loosening of assembly fasteners due to drilling vibration.

1. Replace copper bushings every 12 months or if wear exceeds 0.3mm; 2. Re-torque assembly fasteners monthly using a calibrated torque wrench.

5

Engaged wheel assembly

-

Alloy Steel (Engaged Wheel Body) + GCr15 Bearings + Carbon Steel Shaft

1. Gear tooth wear from meshing with rack/guide rail; 2. Bearing damage from dust and drilling fluid ingress.

1. Lubricate gear meshing surfaces and bearings weekly; 2. Install dust-proof and waterproof seals to prevent contamination.

6

Pulley

FY50-01.04.01

ZG35CrMo Cast Steel (Precision Machined Groove)

1. Abrasive wear from wire rope friction; 2. Thermal fatigue from extreme temperature fluctuations (desert/arctic drilling).

1. Match pulley groove diameter with wire rope diameter (ratio ≥12) to reduce wear; 2. Inspect for thermal cracks quarterly in extreme environments.

7

Pulley

FY50-03.02.01

ZG310-570 Cast Steel (Stress-Relieved)

1. Edge damage from wire rope deviation; 2. Corrosion from drilling fluid splatter.

1. Adjust wire rope alignment to avoid deviation; 2. Clean pulley surface regularly and reapply anti-corrosion coating as needed.

8

Engaged wheel

FY50-01.02.05

42CrMo Alloy Steel (Quenched & Tempered, Gear Tooth Hardened)

1. Fatigue pitting of gear teeth from cyclic meshing loads; 2. Wear from foreign debris between teeth.

1. Conduct MPT of gear teeth annually to detect fatigue cracks; 2. Clean gear teeth regularly to remove debris.

9

Driving wheel

FY50-04.04.01

42CrMo Alloy Steel (Forged & Gear Cut)

1. High-load wear from direct power transmission; 2. Loosening of key connection with shaft.

1. Monitor load during operation to avoid overloading; 2. Inspect key and keyway wear monthly; replace if wear is detected.

1

Shaft

FY50-01.02.04

42CrMo Alloy Steel (Quenched & Tempered, Precision Ground)

1. Journal wear from bearing friction; 2. Fatigue cracking from cyclic torque and bending loads.

1. Lubricate journals with anti-wear grease regularly; 2. Conduct UT annually to detect hidden fatigue cracks.

2

Sahft

FY60-01.02

40Cr Alloy Steel (Quenched & Tempered)

1. Wear at keyway from repeated key insertion/removal; 2. Corrosion in high-humidity environments.

1. Use hydraulic tools for key assembly/disassembly to reduce keyway damage; 2. Apply anti-corrosion coating to exposed shaft ends.

3

Shaft

FY50-04.04.02

42CrMo Alloy Steel (Forged & Precision Machined)

1. Torsional fatigue from high-torque transmission; 2. Impact damage from sudden load changes during BOP handling.

1. Monitor torque values during operation to avoid sudden overloads; 2. Inspect shaft straightness quarterly and correct if deformation is detected.

4

Gear shaft

FY50-04.02.02

42CrMo Alloy Steel (Gear Tooth Hardened to HRC55-60)

1. Gear tooth wear and pitting from meshing; 2. Shaft journal wear from bearing operation.

1. Lubricate gear meshing surfaces with extreme-pressure gear oil; 2. Replace bearings promptly if journal wear is detected.

5

Bearing 312

GB276-82

GCr15 Bearing Steel (High-Precision Rolling Elements)

1. Seizure due to lubrication contamination; 2. Fatigue damage from cyclic loads.

1. Use clean, high-quality bearing grease; 2. Replace bearings every 24 months or if abnormal noise/vibration is detected.

6

Beaing 306

GB276-82

GCr15 Bearing Steel

1. Wear from dust and debris ingress; 2. Overheating damage from improper installation (misalignment).

1. Install dust-proof seals; 2. Ensure bearing installation alignment error ≤0.05mm.

7

Bearing 60307

GB278-82

GCr15 Bearing Steel

1. Radial load fatigue; 2. Corrosion from moisture ingress.

1. Avoid exceeding rated radial load; 2. Keep bearing housing dry and well-sealed.

8

Gear wheel

FY50-04.08

42CrMo Alloy Steel (Carburized & Quenched)

1. Gear tooth wear from meshing with other gears; 2. Impact damage from sudden load changes.

1. Inspect gear teeth for wear monthly; 2. Install shock absorbers to mitigate sudden load impacts.

9

Gear wheel

FY50-04.02.04

40CrNiMo Alloy Steel (High-Torque Resistant)

1. Fatigue pitting of gear teeth; 2. Wear from insufficient lubrication.

1. Conduct MPT of gear teeth annually; 2. Ensure adequate lubrication and oil level in the gear box.

10

Copper casing

FY50-01.04.02

ZCuSn10Pb1 Bronze (Anti-Wear, Anti-Seizure)

1. Abrasive wear from shaft rotation; 2. Corrosion from drilling fluid immersion.

1. Lubricate with drilling fluid-resistant grease; 2. Replace if wear exceeds 0.3mm or if corrosion pitting is severe.

11

Bearing Cover

FY50-04.08

Carbon Steel Q235B (Zinc-Plated)

1. Corrosion of zinc plating in harsh environments; 2. Seal failure leading to moisture ingress.

1. Inspect zinc plating for damage and touch up with anti-corrosion paint; 2. Replace seals annually to ensure waterproof/dustproof performance.

1. Inspect zinc plating for damage and touch up with anti-corrosion paint; 2. Replace seals annually to ensure waterproof/dustproof performance.

Casing

FY50-04.02.06

Carbon Steel Q355B (Welded & Anti-Corrosion Coated)

1. Weld joint fatigue from vibration; 2. Corrosion from environmental exposure.

1. Conduct UT of weld joints annually; 2. Reapply anti-corrosion coating annually.

13

Bearing box

FY50-04.02.09

Cast Iron HT250 (Precision Machined)

1. Crack damage from impact; 2. Corrosion from lubricating oil leakage.

1. Avoid impact during maintenance and transportation; 2. Inspect for oil leaks monthly and repair seals promptly.

14

J2K-160 Cycloidal Motor

604-1034

Alloy Steel (Output Shaft) + Cast Iron (Housing) + Copper Windings

1. Winding burnout from overheating; 2. Gear wear in the cycloidal reducer.

1. Ensure adequate ventilation and avoid overloading to prevent overheating; 2. Replace reducer lubricating oil every 1000 operating hours.

1

String line assembly

FY60-07.00

High-Strength Steel Wire Rope (IWS Structure, Galvanized) + Alloy Steel Shackle

1. Abrasive wear from pulley friction; 2. Fatigue failure from repeated bending and tension cycles.

1. Inspect wire rope for broken strands, wear, and corrosion daily; replace if broken strands exceed 3 in 1 lay; 2. Avoid sharp bends during operation.

2

String line

FY60-07.02.00

High-Strength Steel Wire Rope (Galvanized, Flexible Structure)

1. Corrosion in offshore saltwater environments; 2. Wear from contact with sharp edges of BOP components.

1. Apply anti-corrosion grease to the entire rope regularly; 2. Install rubber sleeves at contact points with sharp edges.

3

DX Type shackle

S-DX35-2

Alloy Steel (Forged, Heat-Treated)

1. Deformation from overloading beyond rated capacity; 2. Corrosion of thread from environmental moisture.

1. Strictly comply with rated load limits; 2. Lubricate threads with anti-corrosion grease and cover with protective caps when not in use.

4

Loop chainφ4 L=250

GB549-83

High-Strength Carbon Steel (Galvanized, Welded Links)

1. Wear of link surfaces from friction and vibration; 2. Corrosion of galvanized layer in salt spray environments.

1. Inspect link wear and weld integrity monthly; replace if link diameter wear exceeds 10%; 2. Reapply galvanized coating annually or touch up damaged areas promptly.

1

Hydraulic system

FY60-09.00

Carbon Steel (Hydraulic Pipes) + Alloy Steel (Valve Cores) + Nitrile Rubber (Seals)

1. Pipe corrosion and blockage from hydraulic oil contamination; 2. Seal aging and leakage from high temperature and pressure.

1. Filter hydraulic oil regularly and keep the oil tank sealed; 2. Replace seals annually and inspect pipes for corrosion monthly.

2

O-ring 16x2.4

GB1235-76

Nitrile Rubber NBR (Oil-Resistant, High-Pressure Resistant)

1. Aging and hardening from long-term contact with hydraulic oil; 2. Damage from improper installation (scratching).

1. Store O-rings in a cool, dry environment away from oil and sunlight; 2. Use specialized tools for installation to avoid scratching.

3

Washer 14

JB 982-77

Carbon Steel Q235B (Zinc-Plated)

1. Deformation from over-tightening; 2. Corrosion of zinc plating in humid environments.

1. Follow recommended torque values during installation; 2. Inspect for corrosion and replace if damaged.

4

Washer 22

JB982-77

Carbon Steel Q235B (Zinc-Plated)

1. Wear from vibration-induced friction; 2. Corrosion from drilling fluid splatter.

1. Install anti-vibration washers if necessary; 2. Clean regularly to remove drilling fluid residue.

5

Balance valve

FD12FA 12/B30

Alloy Steel (Valve Body) + Stainless Steel (Spool)

1. Spool jamming from hydraulic oil contamination; 2. Seal wear leading to pressure loss.

1. Filter hydraulic oil regularly; 2. Inspect valve performance quarterly and replace seals as needed.

6

O-ring 24x2.4

GB1235-76

Nitrile Rubber NBR (High-Pressure Resistant)

1. Fatigue from cyclic pressure changes; 2. Damage from foreign debris in the hydraulic system.

1. Inspect for cracks and deformation monthly; 2. Ensure the hydraulic system is clean before installation.

7

Wahser 18

JB 982-77

Carbon Steel Q235B (Zinc-Plated)

1. Corrosion from moisture ingress; 2. Edge damage from improper handling.

1. Store in a dry environment; 2. Use proper tools to avoid edge damage during installation.

8

O-ring 12x1.9

GB1235-76

Nitrile Rubber NBR (Oil-Resistant)

1. Aging from high-temperature operation; 2. Compression set from long-term installation.

1. Replace every 12 months or if used in high-temperature environments; 2. Avoid over-compression during installation.

9

High pressure rubber hose 10Ⅱ-1400

JB1885-77

Synthetic Rubber (Inner Tube) + High-Strength Steel Wire (Reinforcement) + Rubber (Outer Cover)

1. Aging and cracking of outer cover from outdoor exposure; 2. Wire reinforcement fatigue from repeated bending.

1. Avoid exposure to direct sunlight and extreme temperatures; 2. Inspect for cracks and bulges monthly; replace if damaged.

10

One-way valve

RVP 10-10

Alloy Steel (Valve Body) + Stainless Steel (Valve Core)

1. Valve core jamming from debris; 2. Seal wear leading to reverse leakage.

1. Clean the valve periodically; 2. Inspect for reverse leakage quarterly and replace seals if needed.

11

Overflow valve

DB10-2-30/315

Alloy Steel (Valve Body) + Copper Alloy (Spool)

1. Spool jamming from hydraulic oil contamination; 2. Pressure adjustment spring fatigue.

1. Maintain clean hydraulic oil; 2. Inspect spring performance annually and replace if fatigue is detected.

12

High pressure rubber hose 10Ⅱ-620

JB1885-77

Synthetic Rubber (Inner Tube) + High-Strength Steel Wire (Reinforcement) + Rubber (Outer Cover)

1. Damage from contact with sharp objects; 2. Corrosion of steel wire reinforcement from moisture ingress.

1. Install protective sleeves at potential contact points; 2. Inspect for oil leaks and bulges monthly.

13

High pressure rubber hose 10Ⅱ-30000

JB1885-77

Synthetic Rubber (Inner Tube) + High-Strength Steel Wire (Reinforcement) + Rubber (Outer Cover)

1. Fatigue of steel wire reinforcement from long-term high-pressure operation; 2. Aging of inner tube from hydraulic oil exposure.

1. Avoid exceeding the rated working pressure; 2. Replace every 24 months or if inner tube degradation is detected.