BAOJI FY-50Y & FY-60Y BOP Handling System Spares

1

Traveling Block Group

FY50-01.00

Alloy steel (AISI 4140) with anti-corrosion zinc plating

1. Fatigue from repeated BOP lifting; 2. Corrosion from wellsite moisture and chemicals

1. Conduct ultrasonic crack detection every 6 months; 2. Apply anti-rust grease after each use

2

Lateral Block GroupⅠ

FY50-03.00

Carbon steel (Q345B) with wear-resistant manganese alloy lining

1. Sliding friction with BOP casing; 2. Impact damage during BOP positioning

1. Lubricate sliding surfaces weekly with lithium-based grease; 2. Use rubber cushion pads during alignment

3

Driving Block Group

FY50-04.00

Alloy steel (AISI 4130) with nitrided surface treatment

1. Gear wear from torque transmission; 2. Vibration-induced loosening of fasteners

1. Check gear backlash monthly (maintain 0.1-0.2mm); 2. Retighten bolts to 45 N·m every 1,000 operating hours

4

Lateral Block GroupⅡ

FY50-06.00

Carbon steel (Q345B) with polyurethane wear pads

1. Abrasion from dirt and drilling debris; 2. Uneven load distribution during BOP movement

1. Clean sliding surfaces daily with high-pressure air; 2. Ensure BOP weight is evenly distributed before moving

5

Suspending Assy

FY50-07.00

Stainless steel (304) + alloy steel lifting hooks

1. Fatigue from long-term BOP suspension; 2. Corrosion from wellsite salt spray (offshore operations)

1. Replace after 2 years of continuous use; 2. Apply anti-corrosion spray monthly for offshore applications

6

Driven Block Group

FY50-08.00

Alloy steel (AISI 4140) with hard chrome plating

1. Wear from chain/belt transmission; 2. Overheating from excessive load beyond rated capacity

1. Monitor operating temperature (keep below 80℃); 2. Adjust chain tension quarterly to 500 N

7

Hydraulic System

FY50-09.00

Integrated system: steel manifolds, NBR seals, and aluminum reservoirs

1. Hydraulic oil contamination by dirt and metal particles; 2. Seal degradation under high pressure (31.5MPa)

1. Filter hydraulic oil every 3 months (ISO 12103 Class 8); 2. Inspect seals for leakage monthly

8

Control Box Assy

FY50-09.01.00

Aluminum alloy housing (IP65 rating) + copper wiring

1. Moisture intrusion causing short circuits; 2. Vibration damage to circuit boards and connectors

1. Check housing seals monthly for cracks; 2. Secure with shock-absorbing rubber mounts

9

Oil Cylinder

FYG300/180-1335

Carbon steel cylinder barrel + chrome-plated piston rod (HRC 60-65)

1. Piston rod wear from friction with seals; 2. Internal scuffing from contaminated hydraulic oil

1. Lubricate piston rod weekly with anti-wear oil; 2. Use hydraulic oil compliant with GB 11118.1

1

Bearing

106 GB276-82

Chrome steel (GCr15) with open design

1. Moisture-induced rust; 2. Shaft misalignment causing uneven load distribution

1. Apply anti-rust oil after maintenance; 2. Ensure shaft concentricity (tolerance ±0.02mm) during installation

2

Bearing

306 GB276-82

Chrome steel (GCr15) with precision grinding

1. Lack of lubrication; 2. Contamination by wellsite dust and debris

1. Fill with lithium-based grease (NLGI Grade 2) every 500 hours; 2. Install dust-proof covers to seal both sides

3

Bearing

312 GB276-82

Chrome steel (GCr15) with brass cage

1. Cyclic load fatigue; 2. Grease degradation at high operating temperatures

1. Replace after 2,000 operating hours; 2. Use high-temperature grease (max 120℃) for high-load conditions

4

Bearing

60307 GB278-82

Chrome steel (GCr15) with rubber-sealed design

1. Overheating from excessive radial load; 2. Seal damage leading to grease leakage

1. Never exceed rated radial load (per GB278-82); 2. Inspect seals monthly for cracks or deformation

5

Bearing

8205 GB301-84

Chrome steel (GCr15) thrust ball bearing

1. Axial load exceeding rating; 2. Improper installation causing ball damage

1. Control axial load within 5kN (per GB301-84); 2. Use press-fit installation to avoid ball indentation

1

Compensation Valve (Balance Valve)

FD12FA12/B30

Alloy steel valve body + Viton seals

1. Chemical corrosion from hydraulic oil additives; 2. Spool wear from frequent pressure adjustments

1. Use additives compatible with Viton; 2. Inspect spool wear semi-annually with a dial gauge

2

Manual Multi-fold valve

DL40-d15L-4T-4C-4C

Alloy steel valve body + aluminum alloy handle

1. Wear from frequent manual operation; 2. Leakage from loose valve stem packing

1. Operate valve smoothly to avoid jamming; 2. Tighten stem packing to 15 N·m monthly

3

Hand Operating multible pass valve

DL40-d1525L-4T-4C-4C

Alloy steel valve body + stainless steel internal components

1. Internal leakage from seat wear; 2. Damage from excessive torque during operation

1. Operate with specified torque (30 N·m); 2. Inspect for internal leakage annually via pressure test

4

Pressure gauge 25MPa

YTN-100ZT

Stainless steel case + brass internal mechanism

1. Shock damage from hydraulic pressure spikes; 2. Moisture intrusion causing dial fogging

1. Install a pressure snubber to dampen spikes; 2. Calibrate annually per GB/T 1226-2017

1

Stecl wire rope φ286X37S+1WR

-

High-strength galvanized steel wire (breaking load ≥500kN)

1. Fatigue from repeated bending; 2. Corrosion from wellsite moisture

1. Maintain minimum bend radius (15×diameter); 2. Clean and lubricate monthly with wire rope grease

2

High-pressure soft hose（Pressure gauge）

HFJ2-P2-2-P-1 1m

Polyurethane hose + stainless steel fittings

1. Kinking during installation; 2. Vibration damage to fittings

1. Avoid tight bends (min radius 50mm); 2. Secure with vibration-absorbing clamps

3

High-pressure hose 25I-22000

JB1885-77

Viton rubber + 4-layer steel braid reinforcement

1. Chemical corrosion from hydraulic oil; 2. Pressure fatigue from frequent cycling

1. Use Viton-compatible hydraulic oil; 2. Test annually at 1.5×rated pressure

4

High-pressure hose 16Ⅱ-22000

JB1885-77

NBR rubber + 3-layer steel braid reinforcement

1. Abrasion from contact with equipment; 2. Thermal aging from high fluid temperature

1. Use protective sleeves in high-abrasion areas; 2. Control fluid temperature <80℃

5

HIGH PRESSURE HOSE SET 10Ⅱ-30000

-

NBR rubber + steel braid + carbon steel fittings

1. Fitting leakage from loose connections; 2. Tension fatigue from long length

1. Tighten fittings to 40 N·m; 2. Support hose to reduce tension

6

HIGH PRESSURE HOSE SET 16Ⅱ-30000 (90 DEG.ONE END)

-

NBR rubber + steel braid + 90° stainless steel fittings

1. Stress concentration at 90° fitting; 2. Abrasion from contact

1. Reinforce 90° fitting with brackets; 2. Inspect fitting area weekly for wear

7

HIGH PRESSURE HOSE SET 10Ⅱ-1230

-

NBR rubber + steel braid + carbon steel fittings

1. Kinking during system movement; 2. Fitting wear from vibration

1. Avoid kinking; 2. Replace fittings annually

8

HIGH PRESSURE HOSE SET 16Ⅱ-1430 (90 DEG.ONE END)

-

NBR rubber + steel braid + 90° stainless steel fittings

1. Stress concentration at 90° fitting; 2. Abrasion from contact

1. Reinforce 90° fitting with brackets; 2. Inspect fitting area weekly for wear

9

HIGH PRESSURE HOSE SET 16Ⅱ-26000 (90 DEG.ONE END)

-

NBR rubber + steel braid + 90° stainless steel fittings

1. Tension fatigue from long length; 2. External impact damage

1. Use hose reels to manage length; 2. Install protective covers

10

HIGH PRESSURE HOSE SET 10Ⅱ-26000 (90 DEG.ONE END)

-

NBR rubber + steel braid + 90° stainless steel fittings

1. Tension fatigue from long length; 2. External impact damage

1. Use hose reels to manage length; 2. Install protective covers

11

HIGH PRESSURE HOSE SET 10Ⅱ-660

-

NBR rubber + steel braid + carbon steel fittings

1. Abrasion from equipment contact; 2. Kinking

1. Use protective sleeves; 2. Avoid tight bends (min radius 80mm)

12

HIGH PRESSURE HOSE SET 10Ⅱ-800

-

NBR rubber + steel braid + carbon steel fittings

1. Abrasion from equipment contact; 2. Kinking

1. Use protective sleeves; 2. Avoid tight bends (min radius 80mm)

1

Sealing UR2700P3000-PN

-

Viton rubber with metal reinforcement ring

1. Chemical corrosion from well fluids; 2. High-pressure extrusion

1. Avoid contact with strong acids/bases; 2. Inspect sealing surface for scratches before installation

2

Sealing UR1800P2050-PN

-

Viton rubber with metal reinforcement ring

1. Chemical corrosion from well fluids; 2. High-pressure extrusion

1. Avoid contact with strong acids/bases; 2. Inspect sealing surface for scratches before installation

3

Fast coupling NPT3/8

P10.12.13SP10.02.03

Stainless steel (316L) with NPT threads

1. Thread wear from repeated assembly; 2. Corrosion from moisture

1. Use thread sealant (PTFE tape) during installation; 2. Clean threads after each disassembly

4

Fast coupling NPT1/2

P13.12.13SP13.02.03

Stainless steel (316L) with NPT threads

1. Thread wear from repeated assembly; 2. Corrosion from moisture

1. Use thread sealant (PTFE tape) during installation; 2. Clean threads after each disassembly

5

Fast coupling NPT3/4

P20.12.13SP20.02.03

Stainless steel (316L) with NPT threads

1. Thread damage from over-tightening; 2. Leakage from thread deformation

1. Use torque wrench (30 N·m); 2. Inspect threads for damage before installation

6

Fast coupling NPT1

P25.12.13SP25.02.03

Stainless steel (316L) with NPT threads

1. Thread damage from over-tightening; 2. Leakage from thread deformation

1. Use torque wrench (30 N·m); 2. Inspect threads for damage before installation

7

FAST COUPLING NPT 3/8

-

Stainless steel (316L) with NPT threads

1. Wear of locking mechanism; 2. Corrosion from wellsite chemicals

1. Lubricate locking mechanism monthly; 2. Rinse with clean water after use in chemical environments

8

Loosen buckling screw S-DX35-2

-

Alloy steel (A2-70) with anti-loosening thread

1. Vibration-induced loosening; 2. Corrosion from moisture

1. Use lock washers during installation; 2. Retighten every 500 operating hours

How often should high-pressure hoses (JB1885-77) be replaced?

Replace every 2 years or immediately if outer layer cracks, braid exposure, or pressure test failure (per JB1885-77). Annual pressure testing at 1.5×rated pressure is mandatory.

What causes bearing 8205 GB301-84 failure in FY-50Y/FY-60Y systems?

Common causes: axial load exceeding 5kN (GB301-84 rating), improper press-fit installation, or lack of lubrication. Ensure correct load distribution and use lithium-based grease for lubrication.

How to prevent NPT fast coupling leakage?

Use PTFE thread sealant during installation, tighten to 30 N·m torque, and inspect connections monthly. Avoid over-tightening to prevent thread deformation; clean threads before reassembly.