Lanzhou LS 3NB1300C Mud Pump Parts Specification

107.12.110.03

Discharge manifold

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

1. Use 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.

Body: High-chromium alloy steel (Cr28) for extreme wear resistance; Internal surface: Hardened to 62-65 HRC; Flange: Carbon steel (Q355B) with anti-corrosion epoxy coating.

107.12.111.00

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. Ensure consistent suction flow to prevent cavitation; 2. Flush internal passages after each use to remove mud residue; 3. Retighten flange bolts to 60-65 N·m torque in a cross pattern.

Body: Carbon steel (Q235B) with hot-dip galvanizing; Internal diameter: Precision-machined for smooth slurry flow; Connections: Flanged per API 605 standards for secure sealing.

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 with care during maintenance to avoid impacts; 2. Inspect seal grooves for wear before reinstalling seals; 3. Apply anti-corrosion grease to mating surfaces to prevent rust.

Body: Alloy steel (40Cr) with heat treatment for rigidity; Seal groove: Precision-machined to ensure tight seal fit; Surface: Zinc-nickel plating for anti-corrosion protection.

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 using a straightedge (replace if deviation exceeds 0.1mm); 2. Ensure even torque distribution when tightening fasteners; 3. Clean and repaint damaged surfaces promptly.

Body: Low-alloy steel (Q355B); Thickness: 18mm for structural stability; Surface: Powder-coated to resist wear and corrosion.

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 and thread stripping.

Body: Brass (H62) for excellent sealing performance; Threads: Precision-tapered for secure fastening; Seal seat: Polished to a mirror finish for leak prevention.

107.11.140.01

Valve body

1. Severe abrasive wear from slurry particles; 2. Corrosion from chemical mud additives (e.g., drilling inhibitors); 3. Fatigue from repeated valve opening/closing cycles.

1. Replace every 900 working hours in heavy-abrasion applications; 2. Clean valve seats and internal passages regularly; 3. Ensure proper alignment with guide rings to avoid uneven wear.

Body: High-chromium cast iron (Cr26); Internal surfaces: Wear-resistant ceramic coating; Valve seat: Precision-ground for tight sealing with valve rubber.

107.11.140.03

Valve rubber

1. Thermal aging from high-temperature slurry; 2. Abrasion from contact with slurry particles; 3. Chemical degradation from harsh mud additives.

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

Material: Nitrile rubber (NBR) with 65-70 Shore A hardness; Resistant to oil, drilling mud, and high pressure (up to 40MPa); Precision-molded for exact valve fit.

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 seat surface roughness exceeds 0.7μm; 3. Use a press tool for proper interference fit with the valve body.

Material: Tungsten carbide (WC-Co) composite; Surface: Polished to a smooth finish; Hardness: 85-90 HRA for extreme wear resistance.

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 for proper clearance (0.1-0.2mm) with the valve stem; 3. Replace if deformation or excessive wear is found.

Material: Bronze (CuSn10) for self-lubrication; Internal diameter: Precision-machined; Surface: Passivated to resist corrosion from drilling fluids.

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 free of debris; 3. Avoid over-compression to prevent seal distortion.

Material: Fluororubber (FKM) for high-temperature resistance (-20°C to 200°C); Cross-section: Precision-molded to fit valve cover grooves; Resistant to chemical attack.

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 the surrounding area thoroughly before seal replacement; 2. Use compatible sealant to enhance leak protection; 3. Replace if hardness drops below 55 Shore A.

Material: Nitrile rubber (NBR) reinforced with polyester fiber; Improves tensile strength and wear resistance; Suitable for low to medium temperature applications.

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 to distribute pressure evenly; 3. Store in sealed packaging to prevent moisture damage.

Material: Silicon rubber (VMQ); Dimensions: 155x140x10mm; Resistant to high temperatures and electrical insulation; Ideal for manifold connections.

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 or debris before installation; 2. Use a seal installer tool to avoid tearing; 3. Verify seal alignment before reassembling components.

Material: Polyurethane (PU) for excellent abrasion resistance; Hardness: 75 Shore A; Precision-molded to meet LS 3NB1300C dimensional tolerances.

107.04.110.13

Seal (210x180x15)

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

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

Material: Fluororubber (FKM); Dimensions: 210x180x15mm; Rated for 40MPa pressure and 200°C temperature; Resistant to oil and chemical contaminants.

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 to apply uniform pressure; 2. Replace if flange surfaces are pitted or damaged; 3. Inspect for leaks immediately after pump startup.

Material: Graphite-reinforced gasket material; Combines flexibility and heat resistance; Suitable for flange connections in high-pressure mud systems.

107.11.110.41-1

Stud

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

1. Tighten to 130-140 N·m torque; 2. Apply thread lockant (compatible with drilling fluids) for high-vibration areas; 3. Replace after 3-5 disassembly cycles.

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

107.11.110.17

Stud

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

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

Material: Alloy steel (12.9 grade); Surface: Hot-dip galvanized for harsh environments; Length: Precision-cut to fit LS 3NB1300C components.

107.11.110.67

Stud

1. Wear from friction with nuts; 2. Corrosion from outdoor exposure; 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 or stripped.

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

107.11.110.06

Stud

1. Thread damage from improper tool use; 2. Vibration-induced loosening; 3. Corrosion from mud seepage.

1. Use socket wrenches to avoid cross-threading; 2. Retighten after 100 working hours of initial installation; 3. Replace if corrosion penetrates the plating.

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

107.11.110.12-1

Stud (M39x3)

1. Thread stripping from over-tightening; 2. Fatigue from high-pressure cycles; 3. Corrosion from drilling fluids.

1. Tighten to 290-310 N·m torque; 2. Pair with matching M39x3 nuts (107.04.110.29); 3. Inspect for thread damage after each use.

Material: High-strength alloy steel (12.9 grade); Surface: Zinc-nickel plating; Threads: M39x3, precision-machined for secure fastening.

GB5782-86

Bolt (M20x90)

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

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

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

GB5783-86

Bolt (M24x60)

1. Shank deformation from over-tightening; 2. Vibration-induced fatigue; 3. Corrosion from drilling fluids.

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

Material: Alloy steel (10.9 grade); Surface: Galvanized; Complies with GB5783-86 for high-strength applications; Used for heavy-component mounting.

GB5782-86

Bolt (M24x90)

1. Wear from repeated use; 2. Corrosion from harsh outdoor environments; 3. Damage from incompatible tools.

1. Use only size-matched sockets; 2. Apply anti-corrosion grease for coastal or humid drilling sites; 3. Replace after 4-6 disassembly cycles.

Material: High-strength carbon steel (8.8 grade); Surface: Zinc-nickel plating; Dimensional accuracy meets GB5782-86; Ideal for support and bracket mounting.

C3-9-92

Nut (M30x2)

1. Thread wear from repeated tightening; 2. Vibration-induced loosening; 3. Deformation from over-tightening.

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

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

107.04.110.29

Nut (M39x3)

1. Thread stripping from excessive torque; 2. Corrosion from mud and moisture; 3. Wear from friction with washers.

1. Tighten to the same torque as matching studs (290-310 N·m); 2. Clean threads before installation; 3. Replace if thread damage is visible.

Material: Alloy steel (10 grade); Surface: Hot-dip galvanized; Threads: M39x3, compatible with 107.11.110.12-1 studs.

C3-9-92

Nut (M36x3)

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

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

Material: Alloy steel (10 grade); Surface: Zinc plating; Threads: M36x3, precision-machined to meet industrial fastening standards.

GB6170-86

Nut (M20)

1. Thread damage 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 threads are stripped or damaged.

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

GB6170-86

Nut (M24)

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

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

Material: Carbon steel (8 grade); Surface: Galvanized; Complies with GB6170-86 for compatibility with M24 bolts.

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 mounting surfaces to distribute load evenly.

Material: Spring steel (65Mn); Surface: Zinc plating; Complies with GB93-87; Thickness: 1.2mm; Outer diameter: 37mm.

GB93-87

Washer (24)

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

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

Material: Spring steel (65Mn); Surface: Zinc plating; Complies with GB93-87; Thickness: 1.5mm; Outer diameter: 44mm for M24 fasteners.

107.11.110.02

Bush

1. Metal-to-metal wear from inadequate lubrication; 2. Seizure due to high operating temperatures; 3. Corrosion from drilling fluids.

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

Material: Bronze (CuSn8) for self-lubrication; Internal surface: Polished to reduce friction; Outer diameter: Precision-machined for interference fit with pump components.

107.11.110.18-1

Liner bushing

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

1. Replace every 1000 working hours; 2. Flush surrounding areas to remove debris before replacement; 3. Ensure alignment with mating components to avoid uneven wear.

Material: High-chromium alloy steel (Cr20); Surface: Hardened to 58-62 HRC; Length: Precision-cut to fit LS 3NB1300C pump chambers.

107.11.110.43

Wear plate

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

1. Inspect weekly (replace if thickness decreases by 3mm); 2. Align with mating parts to ensure even load distribution; 3. Use wear-resistant mud additives to extend service life.

Material: Tungsten carbide (WC) composite; Thickness: 12mm; Surface: Wear-resistant coating; Designed to withstand high-velocity slurry impact.

107.11.110.03

Ring threaded

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

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

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

107.11.110.16

Spring

1. Fatigue from repeated compression/expansion; 2. Corrosion from moisture; 3. Deformation from over-compression during installation.

1. Inspect spring rate (replace if it drops by 10%); 2. Avoid over-compression beyond the spring’s rated limit; 3. Store in a dry environment to prevent rust.

Material: Spring steel (50CrVA); Heat-treated for elasticity and fatigue resistance; Surface: Anti-corrosion plating; Compression range: 6-16mm.

107.11.110.65-1

Locking plate

1. Wear from component movement; 2. Corrosion from drilling fluids; 3. Bending from improper installation/removal.

1. Ensure proper fit with locking clips during installation; 2. Inspect for bending or cracks before reuse; 3. Replace if structural damage is present.

Material: Carbon steel (Q235A) with zinc plating; Thickness: 3mm; Precision-cut to fit locking grooves and secure components.

107.11.330.00

Cage

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

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

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

107.11.110.52-1

Locking clip

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

1. Use needle-nose pliers to avoid bending; 2. Replace if the clip loses tension; 3. Verify secure locking after component assembly.

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

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Hand

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

1. Handle carefully to avoid dropping or impacting; 2. Inspect for bending after use; 3. Apply anti-rust spray when stored outdoors.

Material: Carbon steel (Q235A) with protective painting; Handle grip: Non-slip rubber; Length: 160mm for easy leverage during maintenance.

107.11.112.05

Flange

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

1. Align flanges perfectly before tightening bolts; 2. Replace gaskets whenever flanges are separated; 3. Inspect for pitting or warpage annually.

Material: Carbon steel (Q355B); Flange face: Raised face per API 605; Surface: Anti-corrosion epoxy coating; Compatible with manifold connections.

107.11.110.59

Flange

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

1. Tighten bolts in a cross pattern to ensure even pressure; 2. Inspect for cracks during routine maintenance; 3. Clean flange faces before installing gaskets.

Material: Alloy steel (40Cr); Surface: Zinc plating; Flange size: Custom-fit for LS 3NB1300C pump; Designed for high-pressure applications.

GB3289.31-82

Plug (R2)

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

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

Material: Brass (H62) for excellent sealing; Threads: R2 (BSPT) per GB3289.31-82; Surface: Polished to ensure tight seal.

107.12.110.07

Gasket (δ1)

1. Wear from flange movement; 2. Thermal degradation from high temperatures; 3. Damage from debris on mating surfaces.

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

Material: Non-asbestos fiber reinforced with rubber; Thickness: 1mm (δ1); Resistant to oil, drilling mud, and high pressure; Precision-cut for flange fit.

107.12.110.08-1

Gasket (δ30)

1. Compression set from long-term high-pressure use; 2. Damage from improper installation; 3. Chemical degradation from mud additives.

1. Use a torque wrench to apply uniform compression; 2. Do not reuse after removal; 3. Store in a cool, dry place to prevent material degradation.

Material: High-density graphite composite; Thickness: 30mm (δ30); Extreme pressure resistance (up to 40MPa); Ideal for large-gap sealing.

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Gasket

1. Tearing from rough handling; 2. Compression set from over-tightening; 3. Corrosion from moisture.

1. Handle with care to avoid tearing; 2. Align with flange holes before tightening; 3. Replace if any signs of damage are present.

Material: Rubberized fiber; Thickness: 2mm; Resistant to water and drilling mud; Suitable for low-pressure auxiliary connections.

107.12.111.05

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 during routine checks; 3. Secure firmly to prevent vibration-induced movement.

Material: Carbon steel (Q235A); Thickness: 6mm; Surface: Powder-coated for wear and corrosion resistance; Custom-fit for LS 3NB1300C pump.

107.12.111.06

Support

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

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

Material: Alloy steel (40Cr); Mounting points: Reinforced for heavy loads; Surface: Zinc-nickel plating for anti-corrosion; Designed to support manifolds and auxiliary components.

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Support

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

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

Material: Carbon steel (Q355B); Surface: Anti-rust painting; Structural design: Reinforced to withstand continuous vibration and heavy loads.

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Support

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

1. Use lock washers and thread lockant for secure mounting; 2. Clean and repaint damaged surfaces promptly; 3. Replace if any cracks are detected.

Material: Carbon steel (Q235A) with galvanized coating; Compatible with LS 3NB1300C pump structure; Ideal for auxiliary component support.

107.11.110.14-2

Module studded

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

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

Material: High-strength alloy steel (10.9 grade); Studs: Precision-rolled and integrated into the module; Surface: Zinc-nickel plating for anti-corrosion.

How to confirm parts compatibility with Lanzhou LS 3NB1300C mud pump?

All parts are custom-engineered for the LS 3NB1300C 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: 450 working hours; wear plates/valve bodies: 850-1000 hours; seals: 650 hours; liners/bushings: 1000 hours. For high-abrasion environments (e.g., mining slurries), shorten cycles by 20-30%.

How to resolve flange connection leakage?

Replace the gasket (match thickness: δ1/δ30) and clean flange faces thoroughly; tighten bolts in a cross-pattern to recommended torque. If leakage persists, inspect flanges for warpage (grind or replace per GB/T 16744) and realign before reassembly.