Lanzhou LS 3NB1600 Mud Pump Parts Specification

1

107.11.110.15

Discharge manifold

1. Abrasive wear from high-velocity slurry particles; 2. Corrosion from chemical drilling mud additives; 3. Fatigue cracking from repeated high-pressure cycles (up to 45MPa).

1. Add wear-resistant mud additives to reduce internal erosion; 2. Inspect internal surfaces monthly for wear grooves; 3. Avoid sudden pressure spikes beyond the pump’s rated capacity.

High-chromium alloy steel (Cr28) body; internal surface hardened to 62-65 HRC; flange made of Q355B carbon steel with anti-corrosion epoxy coating, compliant with API 605.

2

107.11.112.00

Suction manifold

1. Cavitation damage from inadequate suction flow; 2. Corrosion from moisture and mud contaminants; 3. Loosening at flange connections due to pump vibration.

1. Maintain consistent suction flow to prevent cavitation; 2. Flush internal passages after each use to remove mud residue; 3. Retighten flange bolts in a cross pattern to 65-70 N·m torque.

Q235B carbon steel body with hot-dip galvanizing; precision-machined internal diameter for smooth slurry flow; flanged connections per API 605 for secure sealing.

3

107.11.110.40

Cover

1. Impact damage from debris during maintenance; 2. Wear in seal grooves from repeated assembly/disassembly; 3. Corrosion from mud seepage around seals.

1. Handle carefully to avoid impacts during maintenance; 2. Inspect seal grooves for wear before reinstalling seals; 3. Apply anti-corrosion grease to mating surfaces.

40Cr alloy steel body with heat treatment for rigidity; precision-machined seal grooves; zinc-nickel plating for anti-corrosion protection against drilling fluids.

4

107.11.110.01

Cover

1. Warping from uneven pressure distribution; 2. Fatigue from long-term pump vibration; 3. Corrosion from harsh drilling fluids and outdoor exposure.

1. Check for warpage annually (replace if deviation exceeds 0.1mm); 2. Ensure even torque distribution when tightening fasteners; 3. Clean and repaint damaged surfaces promptly.

Q355B low-alloy steel body (18mm thickness for structural stability); powder-coated surface to resist wear, corrosion, and outdoor elements.

5

107.11.340.00

Valve cover

1. Wear from repeated valve stem movement; 2. Corrosion from seal leakage; 3. Thread damage from improper installation/tightening.

1. Inspect valve stem fitment before installing the cover; 2. Replace seals every time the cover is removed; 3. Use a torque wrench to avoid over-tightening.

H62 brass body for excellent sealing; precision-tapered threads for secure fastening; mirror-polished seal seat to prevent leakage in high-pressure scenarios.

1

107.11.140.01

Valve body

1. Severe abrasive wear from slurry particles; 2. Corrosion from chemical mud additives; 3. Fatigue from repeated valve opening/closing cycles.

1. Replace every 950 working hours in heavy-abrasion applications; 2. Clean valve seats and internal passages regularly; 3. Ensure alignment with guide rings to avoid uneven wear.

Cr26 high-chromium cast iron body; internal surfaces with wear-resistant ceramic coating; precision-ground valve seat for tight fit with valve rubber.

2

107.11.140.03

Valve rubber

1. Thermal aging from high-temperature slurry; 2. Abrasive wear from slurry particles; 3. Chemical degradation from harsh mud additives.

1. Store in a cool, dry place away from sunlight; 2. Replace every 450 working hours or if cracks/softening are found; 3. Avoid contact with oil-based solvents.

Nitrile rubber (NBR) with 65-70 Shore A hardness; resistant to oil, drilling mud, and 45MPa pressure; precision-molded for exact LS 3NB1600 valve fit.

3

107.11.140.04

Valve seat

1. Abrasive wear from valve rubber and slurry; 2. Corrosion from mud contaminants; 3. Damage from misaligned valve installation.

1. Inspect for wear grooves before reinstallation; 2. Replace if surface roughness exceeds 0.7μm; 3. Use a press tool for proper interference fit.

Tungsten carbide (WC-Co) composite; 85-90 HRA hardness for extreme wear resistance; polished surface to ensure leak-tight valve operation.

4

107.11.140.05-1

Guide ring

1. Wear from reciprocating valve stem movement; 2. Corrosion from mud seepage; 3. Deformation from high operating temperatures.

1. Lubricate with high-temperature, mud-resistant grease during installation; 2. Check clearance (0.1-0.2mm) with valve stem monthly; 3. Replace if deformed.

CuSn10 bronze for self-lubrication; precision-machined internal diameter; passivated surface to resist corrosion from drilling fluids.

5

107.11.110.05

Seal valve cover

1. Wear from repeated cover removal/installation; 2. Thermal degradation from high pump temperatures; 3. Damage from uneven compression.

1. Replace every time the valve cover is disassembled; 2. Ensure mating surfaces are clean and debris-free; 3. Avoid over-compression to prevent distortion.

Fluororubber (FKM) for high-temperature resistance (-20°C to 200°C); precision-molded cross-section to fit valve cover grooves; chemical-resistant.

6

107.10.110.03

Seal

1. Abrasive wear from slurry particles; 2. Chemical breakdown from mud additives; 3. Fatigue from repeated pressure cycles.

1. Flush surrounding areas thoroughly before replacement; 2. Use compatible sealant to enhance leak protection; 3. Replace if hardness drops below 55 Shore A.

NBR reinforced with polyester fiber for improved tensile strength; suitable for low to medium temperature applications in LS 3NB1600 pumps.

7

107.04.110.21

Seal (155x140x10)

1. Compression set from long-term use; 2. Radial wear from component movement; 3. Corrosion from moisture and mud.

1. Do not reuse after removal (compression set is irreversible); 2. Ensure proper installation depth for even pressure distribution; 3. Store in sealed packaging.

Silicon rubber (VMQ); dimensions 155x140x10mm; high-temperature resistant and electrically insulating; ideal for manifold connections.

8

107.11.110.68

Seal

1. Leakage-induced wear from poor fitting; 2. Degradation from harsh drilling fluids; 3. Tearing from improper installation tools.

1. Inspect seal grooves for burrs/debris before installation; 2. Use a seal installer tool to avoid tearing; 3. Verify alignment before reassembly.

Polyurethane (PU) for excellent abrasion resistance; 75 Shore A hardness; precision-molded to meet LS 3NB1600 dimensional tolerances.

9

107.04.110.13

Seal (210x180x15)

1. Thermal aging from high-pressure pumping; 2. Abrasive wear from large slurry particles; 3. Chemical attack from oil-based muds.

1. Replace every 650 working hours in heavy-duty use; 2. Clean mating surfaces with non-corrosive solvent; 3. Ensure even compression during assembly.

Fluororubber (FKM); dimensions 210x180x15mm; rated for 45MPa pressure and 200°C; resistant to oil and chemical contaminants.

10

107.11.110.60

Seal

1. Wear from flange movement caused by vibration; 2. Corrosion from moisture and mud; 3. Damage from over-tightening flange bolts.

1. Use a torque wrench for uniform pressure; 2. Replace if flange surfaces are pitted; 3. Inspect for leaks immediately after pump startup.

Graphite-reinforced gasket material; combines flexibility and heat resistance; designed for flange connections in high-pressure mud systems.

1

107.11.110.41-1

Stud

1. Thread wear from repeated assembly/disassembly; 2. Fatigue fracture from pump vibration; 3. Corrosion from drilling fluids.

1. Tighten to 135-145 N·m torque; 2. Apply drilling-fluid-compatible thread lockant; 3. Replace after 3-5 disassembly cycles.

10.9-grade high-strength alloy steel; zinc-nickel plating for anti-corrosion; precision-rolled threads per GB standards.

2

107.11.110.17

Stud

1. Over-tightening-induced thread deformation; 2. Vibration fatigue; 3. Corrosion from chemical mud additives.

1. Use a torque wrench to avoid overloading; 2. Inspect threads for damage before reuse; 3. Clean threads with a wire brush.

12.9-grade alloy steel; hot-dip galvanized for harsh environments; precision-cut length to fit LS 3NB1600 components.

3

107.11.110.67

Stud

1. Friction wear with nuts; 2. Outdoor corrosion; 3. Fatigue from pressure-induced component movement.

1. Ensure minimum 8-thread engagement with nuts; 2. Apply anti-corrosion grease to exposed threads; 3. Replace if thread pitch is damaged.

8.8-grade carbon steel; zinc plating; GB-standard tapped threads for compatibility with LS 3NB1600 fasteners.

4

107.11.110.06

Stud

1. Thread damage from improper tools; 2. Vibration-induced loosening; 3. Mud seepage corrosion.

1. Use socket wrenches to avoid cross-threading; 2. Retighten after 100 working hours; 3. Replace if plating is breached by corrosion.

10.9-grade alloy steel; phosphating treatment for corrosion resistance; precision-rolled threads for smooth assembly.

5

107.11.110.12-1

Stud (M39x3)

1. Thread stripping from over-tightening; 2. High-pressure cycle fatigue; 3. Drilling fluid corrosion.

1. Tighten to 295-315 N·m torque; 2. Pair with 107.04.110.29 (M39x3) nuts; 3. Inspect threads after each use.

12.9-grade high-strength alloy steel; zinc-nickel plating; M39x3 precision-machined threads for secure fastening.

6

GB5782-86

Bolt (M20x90)

1. Cross-threading wear; 2. Pump vibration fatigue; 3. Moisture corrosion.

1. Align threads manually before using power tools; 2. Tighten to 75-80 N·m torque; 3. Use GB93-87 (20) spring washers.

8.8-grade carbon steel; zinc plating; complies with GB5782-86; ideal for flange fastening in LS 3NB1600 pumps.

7

GB5783-86

Bolt (M24x60)

1. Over-tightening shank deformation; 2. Vibration fatigue; 3. Drilling fluid corrosion.

1. Tighten to 155-165 N·m torque; 2. Inspect shank for bending after installation; 3. Replace if fatigue signs (e.g., discoloration) appear.

10.9-grade alloy steel; galvanized; complies with GB5783-86; used for heavy-component mounting.

8

C3-9-92

Nut (M30x2)

1. Repeated tightening thread wear; 2. Vibration-induced loosening; 3. Over-tightening deformation.

1. Pair with M30x2 studs; 2. Replace after 3-5 uses; 3. Use lock washers for high-vibration areas.

10-grade high-strength alloy steel; anti-corrosion coating; M30x2 precision-tapped threads.

9

107.04.110.29

Nut (M39x3)

1. Excessive torque thread stripping; 2. Mud/moisture corrosion; 3. Washer friction wear.

1. Tighten to matching stud torque (295-315 N·m); 2. Clean threads before installation; 3. Replace if thread damage is visible.

10-grade alloy steel; hot-dip galvanized; M39x3 threads compatible with 107.11.110.12-1 studs.

10

C3-9-92

Nut (M36x3)

1. Vibration loosening; 2. Repeated use thread wear; 3. Chemical mud additive corrosion.

1. Apply thread lockant for critical connections; 2. Inspect threads regularly; 3. Store in a dry environment.

10-grade alloy steel; zinc plating; M36x3 precision-machined threads for industrial fastening.

11

GB6170-86

Nut (M20)

1. Cross-threading damage; 2. Pump vibration loosening; 3. Moisture corrosion.

1. Align threads before tightening; 2. Pair with GB5782-86 (M20x90) bolts; 3. Replace if threads are stripped.

8-grade carbon steel; zinc plating; complies with GB6170-86; compatible with M20 flange bolts.

12

107.11.140.02

Nut

1. Thread wear from valve component movement; 2. Corrosion from mud seepage; 3. Over-tightening deformation.

1. Tighten to 85-90 N·m torque; 2. Inspect threads for damage before reuse; 3. Pair exclusively with valve body fasteners.

8-grade carbon steel; zinc plating; precision-tapped threads to fit LS 3NB1600 valve body components.

13

GB93-87

Washer (20)

1. Bolt/nut friction wear; 2. High-pressure deformation; 3. Moisture corrosion.

1. Use only with M20 bolts/nuts; 2. Replace if flattened/cracked; 3. Ensure flat mounting surfaces for even load distribution.

65Mn spring steel; zinc plating; complies with GB93-87; 1.2mm thickness, 37mm outer diameter.

14

GB93-87

Washer (24)

1. Repeated compression elastic fatigue; 2. Uneven force breakage; 3. Drilling fluid corrosion.

1. Replace after each disassembly; 2. Do not reuse deformed washers; 3. Store in sealed packaging to prevent rust.

65Mn spring steel; zinc plating; complies with GB93-87; 1.5mm thickness, 44mm outer diameter for M24 fasteners.

1

107.11.110.02

Bush

1. Metal-to-metal wear from inadequate lubrication; 2. High-temperature seizure; 3. Drilling fluid corrosion.

1. Lubricate with high-temperature, mud-resistant grease during installation; 2. Check clearance (0.05-0.1mm) monthly; 3. Replace if surface roughness exceeds 1.0μm.

CuSn8 bronze for self-lubrication; polished internal surface; precision-machined outer diameter for interference fit with LS 3NB1600 components.

2

107.11.110.18-1

Liner bushing

1. Slurry particle abrasive wear; 2. High-pressure cycle fatigue; 3. Chemical mud additive corrosion.

1. Replace every 1000 working hours; 2. Flush debris before replacement; 3. Ensure alignment with mating components.

Cr20 high-chromium alloy steel; surface hardened to 58-62 HRC; precision-cut length to fit LS 3NB1600 pump chambers.

3

107.11.110.43

Wear plate

1. Severe slurry abrasive wear; 2. Mud contaminant corrosion; 3. Misaligned component damage.

1. Inspect weekly (replace if thickness decreases by 3mm); 2. Align for even load distribution; 3. Use wear-resistant mud additives.

Tungsten carbide (WC) composite; 12mm thickness; wear-resistant coating to withstand high-velocity slurry impact.

4

107.11.110.03

Ring threaded

1. Repeated assembly thread wear; 2. Drilling fluid corrosion; 3. Cross-threading installation damage.

1. Align threads manually before tightening; 2. Use mud-compatible thread sealant; 3. Replace if thread damage is found.

Q235A carbon steel with zinc plating; precision-tapered threads; machined internal diameter for smooth slurry flow.

5

107.11.110.16

Spring

1. Repeated compression/expansion fatigue; 2. Moisture corrosion; 3. Over-compression installation deformation.

1. Inspect spring rate (replace if reduced by 10%); 2. Avoid over-compression beyond rated limits; 3. Store in a dry environment.

50CrVA spring steel; heat-treated for elasticity/fatigue resistance; anti-corrosion plating; 6-16mm compression range.

6

107.11.110.65-1

Locking plate

1. Component movement wear; 2. Drilling fluid corrosion; 3. Improper installation/removal bending.

1. Ensure proper fit with locking clips; 2. Inspect for bending/cracks before reuse; 3. Replace if structurally damaged.

Q235A carbon steel with zinc plating; 3mm thickness; precision-cut to fit LS 3NB1600 locking grooves.

7

107.11.330.00

Cage

1. Valve movement wear; 2. Mud seepage corrosion; 3. High-pressure deformation.

1. Inspect valve component clearance monthly; 2. Clean debris from cage openings; 3. Replace if deformed.

40Cr alloy steel; heat-treated for rigidity; polished internal surfaces to reduce valve friction.

8

107.11.110.52-1

Locking clip

1. Repeated locking/unlocking wear; 2. Improper tool bending; 3. Moisture/mud corrosion.

1. Use needle-nose pliers to avoid bending; 2. Replace if tension is lost; 3. Verify secure locking after assembly.

65Mn spring steel; quenched/tempered for elasticity; zinc plating; precision-formed for tight locking.

9

-

Hand

1. Maintenance/transport impact damage; 2. Repeated use fatigue; 3. Outdoor exposure corrosion.

1. Handle carefully to avoid dropping; 2. Inspect for bending after use; 3. Apply anti-rust spray for outdoor storage.

Q235A carbon steel with protective painting; non-slip rubber grip; 160mm length for easy maintenance leverage.

10

107.11.112.05

Flange

1. Drilling fluid corrosion; 2. Gasket movement wear; 3. Assembly misalignment damage.

1. Align flanges perfectly before tightening; 2. Replace gaskets when flanges are separated; 3. Inspect for pitting/warpage annually.

Q355B carbon steel; API 605 raised flange face; anti-corrosion epoxy coating; compatible with LS 3NB1600 manifolds.

11

107.11.110.59

Flange

1. High-pressure cycle fatigue; 2. Moisture corrosion; 3. Bolt over-tightening damage.

1. Tighten bolts in a cross pattern for even pressure; 2. Inspect for cracks during routine maintenance; 3. Clean flange faces before gasket installation.

40Cr alloy steel; zinc plating; custom-fit for LS 3NB1600 pump; designed for high-pressure applications.

12

GB3289.31-82

Plug (R2)

1. Repeated removal thread wear; 2. Drilling fluid corrosion; 3. Leakage-induced thread damage.

1. Apply thread sealant during installation; 2. Avoid over-tightening to prevent stripping; 3. Inspect for leaks after startup.

H62 brass for sealing performance; R2 (BSPT) threads per GB3289.31-82; polished surface for leak prevention.

13

107.11.110.56-1

Gasket (δ30)

1. Long-term high-pressure compression set; 2. Improper installation damage; 3. Chemical mud additive degradation.

1. Use a torque wrench for uniform compression; 2. Do not reuse after removal; 3. Store in a cool, dry place.

High-density graphite composite; 30mm thickness; 45MPa pressure resistance; ideal for large-gap sealing.

14

107.11.110.57

Gasket (δ0.5)

1. Flange movement wear; 2. Thermal degradation; 3. Debris-induced damage on mating surfaces.

1. Ensure clean flange faces before installation; 2. Use compatible sealant to enhance sealing; 3. Replace if torn.

Non-asbestos fiber reinforced with rubber; 0.5mm thickness; resistant to oil, drilling mud, and high temperatures.

15

107.11.110.58

Gasket (δ0.2)

1. Rough handling tearing; 2. Over-tightening compression set; 3. Moisture corrosion.

1. Handle with care to avoid tearing; 2. Align with flange holes before tightening; 3. Replace if damaged.

Thin rubberized fiber; 0.2mm thickness; precision-cut for small gaps; resistant to water and drilling mud.

16

-

Plate

1. Drilling fluid corrosion; 2. Component movement wear; 3. Maintenance impact damage.

1. Apply anti-corrosion coating annually; 2. Inspect for bending/cracks; 3. Secure firmly to prevent vibration movement.

Q235A carbon steel; 6mm thickness; powder-coated surface; custom-fit for LS 3NB1600 pump.

17

-

Support

1. Component weight wear; 2. Harsh environment corrosion; 3. Improper installation damage.

1. Align perfectly with mounting points; 2. Tighten fasteners to recommended torque; 3. Inspect for wear routinely.

Q355B carbon steel; anti-rust painting; reinforced structural design for heavy loads and vibration resistance.

18

107.11.110.54

Support

1. Pump vibration fatigue; 2. Mud/moisture corrosion; 3. Uneven load deformation.

1. Check mounting tightness quarterly; 2. Ensure even load distribution; 3. Replace if deformation exceeds 0.1mm.

40Cr alloy steel; zinc-nickel plating; reinforced mounting points; designed to support LS 3NB1600 manifolds.

19

107.11.110.55

Support

1. Long-term use fatigue; 2. Outdoor exposure corrosion; 3. Impact damage during maintenance.

1. Use lock washers to prevent loosening; 2. Clean and repaint damaged surfaces; 3. Replace if cracks are detected.

Q235A carbon steel with galvanized coating; compatible with LS 3NB1600 pump structure; heavy-load support capability.

20

107.11.110.14-2

Module studded

1. Repeated assembly thread wear; 2. Drilling fluid corrosion; 3. Component vibration fatigue.

1. Inspect all studs for damage; 2. Apply anti-corrosion grease to threads; 3. Replace the entire module if any studs are stripped/cracked.

10.9-grade high-strength alloy steel; integrated precision-rolled studs; zinc-nickel plating for anti-corrosion.

How to confirm parts compatibility with Lanzhou LS 3NB1600 mud pump?

All parts are custom-engineered for the LS 3NB1600 model. Verify product numbers against the specification tables; for further confirmation, provide your pump’s serial number. All components meet API 7K and GB standards for dimensional and performance compatibility.

What is the recommended replacement cycle for key wear parts?

Valve rubbers: 450 working hours; wear plates/valve bodies: 950-1000 hours; seals: 650 hours; liners/bushings: 1000 hours. For high-abrasion mining or deep-well drilling, shorten cycles by 20-30%.

How to prevent fastener loosening in high-vibration environments?

Use thread lockant compatible with drilling fluids for critical connections; tighten fasteners to recommended torque (per table specs); pair nuts with matching washers (GB93-87) and retighten after 100 working hours of initial installation.