Parts Catalog for Lanzhou LS-National Drilling Equipment-1

1

Liner 107.35.110.30

Alloy cast iron (HT300) with nitriding treatment; inner wall hardness HRC 58-62; surface roughness Ra ≤ 0.8 μm

1. Abrasive wear caused by high-sand mud long-term scouring; 2. Thermal fatigue cracking due to frequent temperature changes of the pump body

1. Control the sand content of the mud to ≤ 12% (mass fraction) and equip with high-precision desander; 2. Avoid frequent start-stop of the mud pump under full load to reduce temperature shock

2

Lock, liner 107.29.110.15

40Cr alloy steel; quenched and tempered treatment; hardness HRC 35-40

1. Thread wear due to repeated disassembly and assembly during maintenance; 2. Deformation caused by uneven tightening torque

1. Use a torque wrench to tighten according to the specified torque (350-400 N·m) during installation; 2. Check the thread integrity before each assembly and replace if there is damage

3

Ring liner lock 107.29.110.20

35CrMo alloy steel; nitriding treatment; surface hardness HRC 55-60

1. Fatigue deformation due to long-term bearing of cylinder internal pressure; 2. Corrosion caused by mud seepage

1. Regularly inspect the deformation of the ring (maximum deformation ≤ 0.2 mm); 2. Apply anti-corrosion grease to the surface before installation to prevent mud intrusion

4

Ring, cylinder thread 107.36.110.02

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

1. Aging and hardening due to long-term contact with high-temperature mud; 2. Damage caused by improper installation (scratching by thread edges)

1. Replace the ring every 800 operating hours; 2. Chamfer the thread edge before installation and use a guide sleeve to avoid direct contact between the ring and the thread

1

Clamp piston rod 107.29.118.00

42CrMo alloy steel; forged and tempered; surface chrome plating; hardness HRC 60-65

1. Wear of the clamping surface due to long-term friction with the piston rod; 2. Loosening caused by vibration of the pump body leading to thread wear

1. Check the clamping tightness every 300 operating hours and re-tighten if necessary; 2. Install anti-vibration washers between the clamp and the pump body

2

Rod, piston 107.29.110.24

42CrMoV alloy steel; ultra-high strength; surface nitriding; straightness ≤ 0.1 mm/m

1. Wear of the rod surface due to misalignment with the cylinder; 2. Fatigue cracking due to frequent alternating loads

1. Check the coaxiality of the piston rod and the cylinder monthly (deviation ≤ 0.15 mm); 2. Avoid sudden load changes during operation (load change rate ≤ 10%/s)

3

Rod, piston 107.29.110.23

35CrMo alloy steel; quenched and tempered; surface phosphating treatment; corrosion-resistant

1. Corrosion caused by mud intrusion into the rod seal; 2. Wear of the connecting end thread due to repeated disassembly

1. Regularly inspect the rod seal for leakage and replace if damaged; 2. Use a special tool for disassembly to avoid damaging the thread

4

Seal 107.29.110.18

Fluororubber (FKM); high temperature resistant (up to 180℃); chemical resistant; compliant with ISO 6195:2018

1. Aging and cracking due to long-term high-temperature environment; 2. Damage caused by abrasive particles in the mud

1. Replace the seal every 600 operating hours; 2. Ensure the mud is filtered through a 20-micron filter before entering the pump body

1

Valve pot cover fluid end 107.35.110.06

Gray cast iron (HT250); machined precision; surface anti-rust treatment

1. Crack caused by thermal shock due to sudden temperature rise of the pump body; 2. Seal failure due to thread wear leading to mud leakage

1. Preheat the pump body before starting in low-temperature environments; 2. Regularly check the thread tightness and replace the seal gasket if necessary

2

Retainer valve guide LS8323-0093-00

2Cr13 stainless steel; wear-resistant; corrosion-resistant

1. Wear of the inner hole due to long-term reciprocating movement of the valve guide; 2. Deformation caused by uneven stress during installation

1. Check the inner hole wear every 500 operating hours (maximum wear ≤ 0.1 mm); 2. Ensure the installation surface is flat (flatness ≤ 0.02 mm/m)

3

Valve guide 107.36.110.07

Copper-based alloy (ZCuSn10Pb1); self-lubricating; low friction coefficient

1. Wear due to lack of lubrication during high-speed operation; 2. Scuffing caused by foreign particles entering the gap

1. Inject high-temperature lubricating grease (NLGI Grade 2) every 400 operating hours; 2. Install a dust cover at the valve guide port to prevent foreign particles from entering

4

Bushing valve guide 107.36.110.08

Aluminum bronze (ZCuAl10Fe3); high strength; wear-resistant

1. Fatigue wear due to long-term alternating loads; 2. Corrosion caused by chemical components in the mud

1. Avoid operating the pump beyond the rated speed; 2. Check the chemical composition of the mud regularly and ensure it is compatible with the bushing material

5

Spring, valve LS55413421

50CrVA spring steel; quenched and tempered; surface shot peening; elastic limit ≥ 1200 MPa

1. Fatigue failure due to long-term reciprocating compression; 2. Corrosion caused by moisture in the air during storage

1. Replace the spring every 1200 operating hours; 2. Store spare springs in a dry environment (humidity ≤ 60%)

6

Valve and seat 060155041

Valve: tungsten carbide; Seat: nickel-based alloy; wear-resistant; high hardness

1. Wear of the sealing surface due to mud scouring; 2. Damage caused by valve impact during closing

1. Control the mud flow rate within the rated range to reduce scouring; 2. Adjust the valve closing speed to avoid severe impact

7

Valve seat 061101507

Stellite alloy; corrosion-resistant; high-temperature resistant; hardness HRC 45-50

1. Sealing surface wear due to long-term contact with mud; 2. Deformation caused by excessive installation pressure

1. Check the sealing surface for scratches regularly and grind if necessary; 2. Install according to the specified pressure (avoid over-pressing)

1

Discharge manifold 107.36.110.01

Carbon steel (Q235B); welded structure; surface anti-corrosion coating; pressure-resistant ≥ 35 MPa

1. Weld fatigue cracking due to long-term pressure fluctuation; 2. Corrosion caused by mud erosion at the elbow

1. Regularly inspect the welds for cracks (use ultrasonic testing every 6 months); 2. Install anti-erosion liners at the elbow positions

2

Studded fluid end(Suction) 107.36.120.00

Alloy steel (40Cr); forged; thread precision 6H; hardness HRC 30-35

1. Thread wear due to repeated disassembly; 2. Fatigue failure due to long-term bearing of suction pressure

1. Use a torque wrench to tighten according to the specified torque (280-320 N·m); 2. Check the thread for damage before each assembly

3

Manifold, suction 107.29.112.00

Stainless steel (304); corrosion-resistant; smooth inner wall; low flow resistance

1. Corrosion caused by saltwater mud in offshore drilling; 2. Flange sealing surface wear due to repeated assembly

1. For offshore use, enhance the surface anti-corrosion treatment; 2. Replace the flange gasket every time the manifold is disassembled

4

Flange, suction 107.29.110.03

Carbon steel (Q235A); flange standard GB/T 9119-2010; surface galvanized

1. Deformation caused by uneven tightening of bolts; 2. Corrosion caused by moisture in the air

1. Tighten the bolts in a diagonal sequence to ensure uniform force; 2. Apply anti-rust paint to the surface regularly

5

Flange, blind 107.29.110.04

Q235B carbon steel; thickened structure; pressure-resistant ≥ 25 MPa

1. Bending deformation due to external impact; 2. Seal failure due to gasket aging

1. Avoid collision during transportation and installation; 2. Replace the gasket every 800 operating hours

6

Elbow 7601-2570-89

Carbon steel (20#); seamless; elbow angle 90°; inner wall anti-erosion treatment

1. Severe wear of the inner wall due to high-speed mud scouring; 2. Weld cracking due to vibration

1. Monitor the mud flow rate (avoid exceeding 8 m/s); 2. Install vibration dampers at both ends of the elbow

7

Pipe nipple 107.29.110.21

Brass (H62); precision machining; thread type NPT; corrosion-resistant

1. Thread wear due to repeated assembly; 2. Damage caused by improper torque during installation

1. Use a torque wrench to control the installation torque (80-100 N·m); 2. Apply thread sealant during installation to reduce wear

8

Studded fluid end(Discharge) 107.36.122.00

42CrMo alloy steel; forged and tempered; high strength; pressure-resistant ≥ 40 MPa

1. Fatigue cracking due to long-term high-pressure operation; 2. Corrosion caused by mud leakage

1. Regularly inspect the surface for cracks (magnetic particle testing every 6 months); 2. Ensure the seal is intact to prevent mud leakage

1

O ring rubber 7602-1600-25

Nitrile rubber (NBR); Shore hardness 75±5; oil-resistant; compliant with ISO 3601-1:2012

1. Aging and cracking due to long-term high-temperature environment; 2. Damage caused by excessive compression deformation

1. Replace the O-ring every 500 operating hours; 2. Control the compression amount within 15-20% of the cross-sectional diameter

2

O ring rubber 7602-1600-61

Fluororubber (FKM); high temperature resistant (up to 200℃); chemical resistant; compliant with ISO 3601-1:2012

1. Damage caused by contact with incompatible chemicals in the mud; 2. Wear due to friction with the mating surface

1. Verify the compatibility of the mud chemicals with fluororubber before use; 2. Ensure the mating surface is smooth (Ra ≤ 1.6 μm)

3

O ring rubber 7602-1600-44

Ethylene propylene rubber (EPDM); weather-resistant; low-temperature resistant (down to -40℃); compliant with ISO 3601-1:2012

1. Hardening and cracking in low-temperature environments; 2. Aging due to long-term exposure to sunlight (outdoor use)

1. In low-temperature environments, preheat the O-ring before installation; 2. For outdoor equipment, install a protective cover to avoid direct sunlight

4

O ring rubber 7602-1600-52

Silicone rubber (VMQ); high temperature resistant (up to 250℃); good elasticity; compliant with ISO 3601-1:2012

1. Degradation due to contact with oil-based mud; 2. Tear caused by improper installation

1. Avoid using in oil-based mud systems; 2. Use a guide tool during installation to avoid stretching and tearing

5

Gasket 107.35.110.09

Asbestos-free rubber sheet; high temperature resistant; pressure-resistant ≥ 30 MPa; non-toxic

1. Compression deformation and failure due to excessive tightening torque; 2. Aging and hardening due to long-term use

1. Tighten according to the specified torque (150-180 N·m); 2. Replace the gasket every time the joint is disassembled

6

Gasket 107.29.110.17

Metal wound gasket; inner ring material 304 stainless steel; filling material graphite; pressure-resistant ≥ 45 MPa

1. Seal failure due to damage to the metal winding layer; 2. Corrosion of the inner ring caused by mud intrusion

1. Check the integrity of the winding layer before installation; 2. Apply anti-corrosion grease to the inner ring surface

7

Screw LNB/AC1-2-05

Stainless steel (304); thread type M5×16; cross recessed pan head; corrosion-resistant

1. Thread sliding due to excessive tightening torque; 2. Corrosion caused by harsh oilfield environment

1. Use a torque screwdriver to tighten (torque: 8-10 N·m); 2. Apply anti-rust spray to the surface regularly

8

Screw LNB/AC1-1-07

Carbon steel (4.8 grade); thread type M7×25; hexagonal head; surface galvanized

1. Rusting caused by moisture; 2. Head deformation due to improper tool use during disassembly

1. Store spare screws in a dry environment; 2. Use a matching hexagonal wrench for disassembly and assembly

9

Screw LNB/AC1-4-09

Alloy steel (8.8 grade); high strength; thread type M9×35; hexagonal head; quenched and tempered

1. Fatigue fracture due to long-term vibration; 2. Thread wear due to repeated disassembly

1. Install spring washers to prevent loosening; 2. Replace screws that have been disassembled more than 5 times

10

Bolt LNB/AC1-1-05

Alloy steel (10.9 grade); ultra-high strength; thread type M5×20; hexagonal head; surface phosphating

1. Fracture due to overloading; 2. Corrosion caused by mud contamination

1. Do not exceed the rated load (tensile strength ≥ 1000 MPa); 2. Clean the bolt surface after each use and apply anti-corrosion grease

11

Nut LNB/AC2-2-05

Carbon steel (4.8 grade); thread type M5; hexagonal nut; surface galvanized

1. Thread wear due to repeated assembly; 2. Loosening caused by vibration

1. Use with lock washers; 2. Check the tightening status every 300 operating hours

12

Heavy hex lock nut LS7601-0720-58

Alloy steel (8.8 grade); high strength; thread type M20; heavy hexagonal structure; wear-resistant

1. Thread deformation due to excessive tightening torque; 2. Corrosion caused by salt spray (offshore use)

1. Use a torque wrench to tighten (torque: 220-250 N·m); 2. For offshore use, use anti-salt spray coating

13

Nut,heavy lock 107.35.124.00

40Cr alloy steel; quenched and tempered; thread type M24; heavy lock structure; high reliability

1. Locking mechanism failure due to wear; 2. Corrosion caused by long-term use in harsh environments

1. Check the locking performance before each use; 2. Regularly disassemble and clean the locking mechanism

14

Thread retainer 107.36.110.03

2Cr13 stainless steel; thread type NPT 1/2; corrosion-resistant; locking performance reliable

1. Thread wear due to repeated disassembly; 2. Deformation caused by improper installation

1. Apply thread lockant during installation; 2. Use a special tool for disassembly to avoid deformation

15

Stud with nuts 7601-1260-47

Stud: 42CrMo alloy steel; Nut: 35CrMo alloy steel; high strength matching; thread precision 6H

1. Fatigue failure of the stud due to long-term alternating loads; 2. Thread corrosion of the nut

1. Replace the stud and nut as a set (do not mix with other models); 2. Regularly inspect the stud for bending deformation

1

Hose assembly 107.29.116.00

Inner tube: nitrile rubber; Reinforcement layer: steel wire braid; Outer cover: polyurethane; pressure-resistant ≥ 20 MPa

1. Aging and cracking of the outer cover due to long-term exposure to sunlight; 2. Damage to the inner tube caused by high-temperature mud

1. Avoid direct sunlight and use a protective sleeve; 2. Do not use in environments where the temperature exceeds 120℃

2

Baffle disk 107.29.110.22

Gray cast iron (HT200); machined; surface anti-rust treatment

1. Wear of the surface due to mud scouring; 2. Deformation caused by impact during installation

1. Regularly inspect the surface wear (maximum wear ≤ 0.5 mm); 2. Install carefully to avoid collision

3

Wire 107.36.110.06

Stainless steel (304); diameter φ2.0 mm; high tensile strength; corrosion-resistant

1. Fatigue fracture due to long-term vibration; 2. Corrosion caused by mud contamination

1. Avoid excessive bending during installation; 2. Clean the wire surface regularly and apply anti-corrosion grease

4

Lifting screw LNB/AC1-12-03

Alloy steel (40Cr); forged; thread type M12; lifting capacity ≥ 500 kg; quenched and tempered

1. Thread wear due to repeated lifting; 2. Bending deformation due to overloading

1. Do not exceed the rated lifting capacity; 2. Check the thread integrity and bending degree before each use

5

Double pin LNB/AC4-2-05

Carbon steel (Q235A); diameter φ5 mm; surface galvanized; high wear resistance

1. Wear of the pin surface due to long-term friction; 2. Corrosion caused by moisture

1. Apply lubricating grease to the surface regularly; 2. Store spare pins in a dry environment

6

Wear plate 107.36.110.04

High manganese steel (Mn13); wear-resistant; surface hardness HRC 50-55; impact-resistant

1. Severe wear due to long-term mud scouring; 2. Cracking caused by impact

1. Check the wear thickness every 600 operating hours (replace when thickness is less than 5 mm); 2. Avoid direct impact of hard objects

7

Spacer,Moudle 107.36.110.05

Aluminum alloy (6061); lightweight; high precision; surface anodized

1. Deformation caused by excessive pressure; 2. Wear of the mating surface due to long-term use

1. Ensure the pressure applied during installation is within the rated range; 2. Check the mating surface flatness regularly

8

Support assembly

Carbon steel (Q235B) + rubber pad; welded structure; rubber pad Shore hardness 60±5; shock-absorbing

1. Weld cracking due to long-term vibration; 2. Aging and hardening of the rubber pad

1. Regularly inspect the welds for cracks; 2. Replace the rubber pad every 1200 operating hours