Lanzhou LS 3NB1000C Mud Pump Parts Specification

107.14.110.31

Discharge manifold

1. Abrasive wear from slurry particles; 2. Corrosion from chemical additives in mud; 3. Fatigue from repeated high-pressure cycles.

1. Use wear-resistant mud additives to reduce abrasion; 2. Inspect internal surfaces monthly for erosion; 3. Avoid sudden pressure spikes beyond rated limits.

Body: High-chromium alloy steel (Cr27) for wear resistance; Internal surface: Hardened to 60-65 HRC; Flange: Carbon steel (Q345B) with anti-corrosion coating.

107.14.111.00

Suction manifold

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

1. Ensure consistent suction flow to prevent cavitation; 2. Flush internal passages after use to remove mud residue; 3. Retighten flange bolts to 55-60 N·m torque.

Body: Carbon steel (Q235A) with epoxy anti-corrosion coating; Internal diameter: Precision-machined for smooth flow; Connections: Flanged per API 605 standards.

107.14.110.04

Cover

1. Impact damage from debris during maintenance; 2. Seal groove wear from repeated assembly/disassembly; 3. Corrosion from mud seepage.

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

Body: Alloy steel (40Cr) with heat treatment; Seal groove: Precision-machined; Surface: Zinc plating for anti-corrosion.

107.14.110.05

Cover

1. Fatigue from pump vibration; 2. Warping from uneven pressure distribution; 3. Corrosion from harsh drilling fluids.

1. Check for warpage annually using a straightedge; 2. Ensure even torque distribution when tightening fasteners; 3. Replace if cracks or warpage exceed 0.1mm.

Body: Low-alloy steel (Q345B); Thickness: 15mm for structural rigidity; Surface: Powder-coated for wear and corrosion resistance.

107.14.110.03

Valve cover

1. Wear from valve stem movement; 2. Leakage-induced corrosion around seals; 3. Damage from improper valve installation.

1. Inspect valve stem fitment before installation; 2. Replace seals whenever the cover is removed; 3. Avoid over-tightening to prevent thread damage.

Body: Brass (H62) for good sealing; Threads: Precision-tapered; Seal seat: Polished to ensure tight fit.

107.04.140.01

Valve body

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

1. Replace every 800 working hours in heavy-abrasion environments; 2. Clean valve seats regularly to remove debris; 3. Ensure proper alignment with guide rings.

Body: High-chromium cast iron (Cr25); Internal surfaces: Wear-resistant coating; Valve seat: Precision-ground for tight sealing.

107.04.140.03

Valve rubber

1. Aging from high temperature and pressure; 2. Abrasion from slurry; 3. Chemical degradation from mud additives.

1. Store in a cool, dry place before use; 2. Replace every 400 working hours or if cracks are visible; 3. Avoid contact with harsh chemicals during storage.

Material: Nitrile rubber (NBR) with 60-70 Shore A hardness; Resistant to oil, mud, and high pressure (up to 35MPa).

107.04.140.04

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 seat surface roughness exceeds 0.8μm; 3. Ensure proper torque when mounting.

Material: Tungsten carbide (WC-Co) for extreme wear resistance; Surface: Polished to mirror finish; Fit: Interference fit with valve body.

107.04.140.05

Guide ring

1. Wear from valve stem movement; 2. Corrosion from mud seepage; 3. Deformation from high temperature.

1. Lubricate with high-temperature grease during installation; 2. Inspect for clearance (0.1-0.2mm) with valve stem; 3. Replace if deformation is detected.

Material: Bronze (CuSn10) for self-lubrication; Internal diameter: Precision-machined; Surface: Passivated for corrosion resistance.

107.04.110.55

Seal valve cover

1. Wear from repeated assembly; 2. Degradation from high temperature; 3. Leakage-induced corrosion.

1. Replace every time the valve cover is removed; 2. Ensure clean mating surfaces before installation; 3. Avoid over-compression during tightening.

Material: Fluororubber (FKM) for high-temperature resistance (-20°C to 200°C); Cross-section: Precision-molded for tight fit.

107.10.110.03

Seal

1. Abrasion from slurry particles; 2. Chemical degradation from mud additives; 3. Fatigue from pressure cycles.

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

Material: Nitrile rubber (NBR) reinforced with polyester fiber; Resistant to oil, mud, and high pressure.

107.04.110.21

Seal (155x140x10)

1. Compression set from long-term use; 2. Wear from radial movement; 3. Corrosion from moisture.

1. Do not reuse after removal; 2. Ensure proper installation depth to avoid uneven compression; 3. Store in sealed packaging to prevent moisture damage.

Material: Silicon rubber (VMQ); Dimensions: 155x140x10mm; Resistant to high temperature and chemical exposure.

107.14.110.13

Seal

1. Leakage-induced wear; 2. Degradation from harsh drilling fluids; 3. Damage from improper installation.

1. Inspect seal grooves for debris before installation; 2. Use a seal installer tool to avoid tearing; 3. Replace if any cuts or nicks are present.

Material: Polyurethane (PU) for abrasion resistance; Hardness: 75 Shore A; Fit: Precision-molded for manifold connections.

107.04.110.13

Seal (210x180x15)

1. Thermal aging from high-pressure pumping; 2. Abrasion from large slurry particles; 3. Chemical attack from mud additives.

1. Replace every 600 working hours; 2. Clean mating surfaces with non-corrosive solvent; 3. Ensure alignment to prevent uneven wear.

Material: Fluororubber (FKM); Dimensions: 210x180x15mm; Rated for 35MPa pressure and 200°C temperature.

107.11.110.60

Seal

1. Wear from flange movement; 2. Corrosion from moisture and mud; 3. Damage from over-tightening flanges.

1. Use torque wrench to avoid over-compression; 2. Replace if flange surfaces are pitted; 3. Inspect for leaks after pump startup.

Material: Graphite-reinforced gasket material; Resistant to high temperature, pressure, and chemical corrosion.

107.05.110.68

Stud (M27x2)

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

1. Tighten to 120-130 N·m torque; 2. Use thread lockant for high-vibration areas; 3. Replace after 3-5 disassembly cycles.

Material: High-strength alloy steel (10.9 grade); Surface: Zinc-nickel plating; Threads: Precision-rolled per GB standards.

107.05.110.69

Stud (M39x3)

1. Over-tightening leading to thread deformation; 2. Vibration-induced fatigue; 3. Corrosion from mud and moisture.

1. Use torque wrench (280-300 N·m); 2. Inspect threads for damage before reuse; 3. Apply anti-corrosion grease to exposed threads.

Material: Alloy steel (12.9 grade); Surface: Hot-dip galvanized; Length: Precision-cut for proper component fit.

107.04.110.10

Stud

1. Wear from friction with nuts; 2. Corrosion from harsh drilling environments; 3. Fatigue from pressure cycles.

1. Replace if thread pitch is damaged; 2. Clean threads with a wire brush before installation; 3. Ensure proper thread engagement (minimum 8 threads).

Material: Carbon steel (8.8 grade); Surface: Zinc plating; Threads: Tapped per GB standards for compatibility.

107.14.110.09

Stud

1. Loosening from pump vibration; 2. Thread wear from improper tool use; 3. Corrosion from chemical mud additives.

1. Use a socket wrench to avoid thread damage; 2. Retighten after 100 working hours of initial installation; 3. Replace if corrosion is visible.

Material: Alloy steel (10.9 grade); Surface: Phosphating treatment; Threads: Precision-rolled for wear resistance.

GB5782-86

Bolt (M20x90)

1. Thread wear from cross-threading; 2. Fatigue from vibration; 3. Corrosion from moisture.

1. Align threads manually before tightening; 2. Tighten to 75-80 N·m torque; 3. Use spring washers to prevent loosening.

Material: Carbon steel (8.8 grade); Surface: Zinc plating; Complies with GB5782-86 standard for dimensional accuracy.

GB5733-86

Bolt (M24x60)

1. Over-tightening leading to shank deformation; 2. Vibration-induced fatigue; 3. Corrosion from drilling fluids.

1. Tighten to 150-160 N·m torque; 2. Inspect shank for bending after installation; 3. Replace if any signs of fatigue are present.

Material: Alloy steel (10.9 grade); Surface: Galvanized; Complies with GB5733-86 standard for high-strength applications.

GB5782-86

Bolt (M24x60)

1. Wear from repeated use; 2. Corrosion from harsh environments; 3. Damage from improper tool use.

1. Use only compatible sockets; 2. Apply anti-corrosion grease for outdoor use; 3. Replace after 4-6 disassembly cycles.

Material: High-strength carbon steel (8.8 grade); Surface: Zinc-nickel plating; Dimensional accuracy meets GB5782-86.

107.04.110.04

Nut (M27x2)

1. Thread wear from repeated tightening; 2. Loosening from vibration; 3. Deformation from over-tightening.

1. Pair with matching M27x2 studs; 2. Replace after 3-5 uses; 3. Use a torque wrench to avoid overloading.

Material: Carbon steel (8 grade); Surface: Zinc plating; Threads: Precision-tapped per GB standards.

107.04.110.29

Nut (M39x3)

1. Thread stripping from over-tightening; 2. Corrosion from mud and moisture; 3. Wear from friction with washers.

1. Tighten to recommended torque (280-300 N·m); 2. Clean threads before installation; 3. Replace if thread damage is detected.

Material: Alloy steel (10 grade); Surface: Hot-dip galvanized; Threads: Compatible with M39x3 studs.

C3-9-92

Nut (M30x2)

1. Vibration-induced loosening; 2. Thread wear from repeated use; 3. Corrosion from chemical additives.

1. Use lock washers or thread lockant; 2. Inspect for thread damage regularly; 3. Store in a dry environment before use.

Material: High-strength alloy steel; Surface: Anti-corrosion coating; Threads: M30x2, precision-machined for tight fit.

G3-9-92

Nut (M36x3)

1. Over-tightening leading to thread deformation; 2. Fatigue from high-pressure cycles; 3. Corrosion from drilling fluids.

1. Tighten to 220-240 N·m torque; 2. Replace if threads are stripped; 3. Apply anti-corrosion grease to mating surfaces.

Material: Alloy steel (10 grade); Surface: Zinc plating; Threads: M36x3, compliant with industrial fastening standards.

GB6170-86

Nut (M20)

1. Thread wear from cross-threading; 2. Loosening from pump vibration; 3. Corrosion from moisture.

1. Align threads before tightening; 2. Pair with GB5782-86 M20 bolts; 3. Replace if any thread damage is visible.

Material: Carbon steel (8 grade); Surface: Zinc plating; Complies with GB6170-86 standard for dimensional consistency.

GB6170-86

Nut (M24)

1. Thread wear from repeated use; 2. Deformation from over-tightening; 3. Corrosion from harsh environments.

1. Use torque wrench to avoid overloading; 2. Replace after 4-6 disassembly cycles; 3. Clean threads with a wire brush.

Material: Carbon steel (8 grade); Surface: Galvanized; Complies with GB6170-86 for high-strength bolt compatibility.

GB93-87

Washer (20)

1. Wear from friction with bolts/nuts; 2. Deformation from high pressure; 3. Corrosion from moisture.

1. Use only with M20 bolts/nuts; 2. Replace if flattened or cracked; 3. Ensure flat installation surface.

Material: Spring steel (65Mn); Surface: Zinc plating; Complies with GB93-87, thickness: 1.2mm for load distribution.

GB93-87

Washer (24)

1. Elastic fatigue from repeated compression; 2. Breakage from uneven force; 3. Corrosion from drilling fluids.

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

Material: Spring steel (65Mn); Surface: Zinc plating; Complies with GB93-87, outer diameter: 44mm for M24 fasteners.

GB93-87

Washer (24)

1. Wear from heavy load; 2. Corrosion from chemical mud additives; 3. Damage from improper installation.

1. Ensure washer is centered on bolt shank; 2. Replace if rust is present; 3. Use with high-strength M24 bolts only.

Material: Spring steel (65Mn); Quenched and tempered for elasticity; Surface: Anti-oxidation coating.

107.14.110.06

Bush

1. Wear from metal-to-metal contact; 2. Seizure from inadequate lubrication; 3. Corrosion from drilling fluids.

1. Lubricate with high-temperature grease during installation; 2. Inspect for clearance (0.05-0.1mm) regularly; 3. Replace if surface roughness exceeds 1.0μm.

Material: Bronze (CuSn8) for self-lubrication; Internal surface: Polished; Outer diameter: Precision-machined for interference fit.

107.14.110.15

Liner bushing

1. Abrasive wear from slurry particles; 2. Fatigue from repeated pressure cycles; 3. Corrosion from chemical additives.

1. Replace every 1000 working hours; 2. Flush surrounding areas to remove debris; 3. Ensure proper alignment with pump components.

Material: High-chromium alloy steel (Cr20); Surface: Hardened to 58-62 HRC; Length: Precision-cut for component fit.

107.14.110.16

Wear plate

1. Severe abrasive wear from slurry; 2. Corrosion from mud contaminants; 3. Damage from misaligned components.

1. Inspect weekly for wear (replace if thickness decreases by 3mm); 2. Align with mating components to avoid uneven wear; 3. Use wear-resistant mud additives.

Material: Tungsten carbide (WC) composite; Thickness: 10mm; Surface: Wear-resistant coating for extended service life.

107.14.110.07

Ring threaded

1. Thread wear from repeated assembly; 2. Corrosion from drilling fluids; 3. Damage from cross-threading.

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

Material: Carbon steel (Q235A) with zinc plating; Threads: Precision-tapered; Inner diameter: Machined for smooth flow.

107.04.110.57

Spring

1. Fatigue from repeated compression; 2. Corrosion from moisture; 3. Deformation from over-compression.

1. Inspect for spring rate (replace if it drops by 10%); 2. Avoid over-compression during installation; 3. Store in a dry environment.

Material: Spring steel (50CrVA); Heat-treated for elasticity; Surface: Anti-corrosion plating; Compression range: 5-15mm.

107.14.110.10

Locking plate

1. Wear from component movement; 2. Corrosion from drilling fluids; 3. Damage from improper installation.

1. Ensure proper fit with locking clips; 2. Inspect for bending before reinstallation; 3. Replace if any cracks are present.

Material: Carbon steel (Q235A) with zinc plating; Thickness: 3mm; Precision-cut for secure locking.

107.14.110.12

Cage

1. Wear from valve movement; 2. Corrosion from mud seepage; 3. Deformation from high pressure.

1. Inspect for clearance with valve components; 2. Clean debris from cage openings; 3. Replace if deformation is detected.

Material: Alloy steel (40Cr); Heat-treated for rigidity; Internal surfaces: Polished to reduce friction.

107.14.110.11

Locking clip

1. Wear from repeated locking/unlocking; 2. Bending from improper tool use; 3. Corrosion from moisture.

1. Use pliers to avoid bending; 2. Replace if clip loses tension; 3. Inspect for secure locking after installation.

Material: Spring steel (65Mn); Quenched and tempered for elasticity; Surface: Zinc plating for anti-corrosion.

107.14.110.30

Hand

1. Impact damage during maintenance; 2. Fatigue from repeated use; 3. Corrosion from outdoor exposure.

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

Material: Carbon steel (Q235A) with painting; Handle grip: Rubber for non-slip operation; Length: 150mm for easy leverage.

107.11.112.05

Flange

1. Corrosion from drilling fluids; 2. Wear from gasket movement; 3. Damage from flange misalignment.

1. Align flanges before tightening bolts; 2. Replace gaskets whenever flanges are separated; 3. Inspect for pitting regularly.

Material: Carbon steel (Q345B); Flange face: Raised face per API 605; Surface: Anti-corrosion coating.

107.11.110.59

Flange

1. Fatigue from pressure cycles; 2. Corrosion from moisture; 3. Damage from over-tightening bolts.

1. Tighten bolts evenly (cross-pattern); 2. Inspect for cracks annually; 3. Clean flange face before installing gaskets.

Material: Alloy steel (40Cr); Flange size: Compatible with LS 3NB1000C manifolds; Surface: Zinc plating.

GB3289.31-82

Plug (R2)

1. Thread wear from repeated removal; 2. Corrosion from drilling fluids; 3. Leakage-induced damage.

1. Use thread sealant during installation; 2. Avoid over-tightening to prevent thread damage; 3. Inspect for leaks after installation.

Material: Brass (H62) for good sealing; Threads: R2 (BSPT) per GB3289.31-82; Surface: Polished.

107.14.110.03

Gasket

1. Compression set from long-term use; 2. Damage from debris on mating surfaces; 3. Chemical degradation from mud.

1. Replace every time components are separated; 2. Clean mating surfaces before installation; 3. Avoid over-compression.

Material: Graphite-reinforced asbestos-free gasket; Resistant to high temperature and pressure; Thickness: 2mm.

107.14.110.02

Gasket (δ1)

1. Wear from flange movement; 2. Degradation from high temperature; 3. Damage from improper installation.

1. Ensure proper alignment with flange holes; 2. Use compatible sealant to enhance sealing; 3. Replace if any tears are present.

Material: Non-asbestos fiber reinforced with rubber; Thickness: 1mm (δ1); Resistant to oil and drilling fluids.

107.14.110.01

Gasket (δ0.25)

1. Tearing from improper handling; 2. Compression set from over-tightening; 3. Degradation from chemical exposure.

1. Handle with care to avoid tearing; 2. Tighten flanges to recommended torque; 3. Store in sealed packaging to prevent damage.

Material: Thin rubberized fiber; Thickness: 0.25mm (δ0.25); Precision-cut for small gaps and tight sealing.

-

Plate

1. Corrosion from drilling fluids; 2. Wear from component movement; 3. Impact damage during maintenance.

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

Material: Carbon steel (Q235A); Thickness: 5mm; Surface: Powder-coated for wear and corrosion resistance.

107.14.111.02

Support

1. Fatigue from pump vibration; 2. Deformation from uneven load; 3. Corrosion from moisture and mud.

1. Check mounting tightness quarterly; 2. Ensure load is evenly distributed; 3. Replace if deformation exceeds 0.1mm.

Material: Alloy steel (40Cr); Mounting points: Reinforced; Surface: Zinc plating for anti-corrosion.

-

Support

1. Wear from component weight; 2. Corrosion from harsh environments; 3. Damage from improper installation.

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

Material: Carbon steel (Q345B); Surface: Anti-rust painting; Structural design: Reinforced for heavy-load support.

-

Support

1. Vibration-induced loosening; 2. Corrosion from drilling fluids; 3. Fatigue from long-term use.

1. Use lock washers to prevent loosening; 2. Clean and repaint damaged areas; 3. Replace if any cracks are present.

Material: Carbon steel (Q235A) with galvanized coating; Design: Compatible with LS 3NB1000C pump structure.

-

Stud

1. Thread wear from repeated use; 2. Corrosion from drilling fluids; 3. Fatigue from vibration.

1. Inspect threads before installation; 2. Apply anti-corrosion grease; 3. Tighten to appropriate torque for component type.

Material: High-strength alloy steel (10.9 grade); Surface: Zinc-nickel plating; Threads: Precision-rolled for wear resistance.

How to confirm parts compatibility with Lanzhou LS 3NB1000C mud pump?

All parts are specifically engineered for the LS 3NB1000C model. Verify product numbers against the table; 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: 400 working hours; wear plates/valve bodies: 800-1000 hours; seals: 600 hours; liners/bushings: 1000 hours. Adjust for high-abrasion environments (e.g., mining slurries) by shortening cycles by 20-30%.

How to resolve pump leakage at flange connections?

First, replace the gasket (match thickness: δ0.25/δ1) and clean flange faces; tighten bolts in a cross-pattern to recommended torque. If leakage persists, inspect flanges for warpage (grind or replace per GB/T 16744) and ensure alignment.