Core Purpose & Applicable Equipment
This product range is exclusively compatible with LANZHOU LS 3NB1600 drilling pumps, tailored for onshore drilling contractors, mining operation teams, and well maintenance service providers. It addresses core demands including pump fluid end sealing integrity, high-pressure resistance, wear durability, and quick replacement compatibility. All parts ensure the stable operation of LS 3NB1600 pumps in harsh drilling scenarios such as oilfield exploration, coal mine water injection, and geological prospecting, minimizing downtime caused by part failures.
1. Fluid End Core Components (High-Pressure Fluid Delivery Core)
Critical for the core fluid delivery function of the LS 3NB1600 pump, these components withstand extreme high pressure and abrasive drilling fluid scouring. Failure leads to pump pressure loss, fluid leakage, and reduced drilling efficiency. Our parts feature high-strength, wear-resistant materials and precise machining, ensuring tight fit with the original pump (complies with GB/T 2900.53-2008 drilling pump standards).
No. | Product Models & Names | Material | Main Wear Causes | Damage Prevention Notes |
1 | Pistons: 107.06.64.00 (Φ140), 107.06.66.00 (Φ150), 107.06.68.00 (Φ160), 107.06.70.00 (Φ170), 107.11.130.00 (Φ180), 107.11.135.00 (Φ190) | High-chromium alloy cast iron (Cr26) with nitrided surface; rubber sealing ring (NBR) | 1. Abrasion of the working surface due to long-term scouring by high-solid-content drilling fluid; 2. Rubber ring aging and cracking due to high temperature and chemical corrosion of drilling fluid. | 1. Control drilling fluid solid content ≤0.1% and pH value 7-9 to reduce corrosion; 2. Inspect piston surface wear monthly, replace if wear depth exceeds 0.2mm or rubber ring shows cracks. |
2 | Liners: 107.11.110.21 (20), 107.11.110.22 (20), 107.11.110.23 (20), 107.11.110.24 (20), 107.11.110.25 (20), 107.11.110.26 (20), 107.11.110.27 (Cr), 107.11.110.28 (Cr), 107.11.110.29 (Cr), 107.11.110.30 (Cr), 107.11.110.31 (Cr), 107.11.110.32 (Cr), 107.11.110.33 (V), 107.11.110.34 (V), 107.11.110.35 (V), 107.11.110.36 (V), 107.11.110.37 (V), 107.11.110.38 (V) | 20# carbon steel (for standard type), high-chromium alloy (Cr) for wear-resistant type, vanadium alloy (V) for high-pressure wear-resistant type | 1. Inner wall abrasion due to high-velocity fluid scouring and solid particle impact; 2. Local corrosion and pitting caused by acidic drilling fluid. | 1. Use corresponding liner types according to drilling conditions (vanadium alloy for high-pressure hard rock drilling); 2. Conduct ultrasonic thickness measurement quarterly, replace if wall thickness reduction exceeds 10% of the original. |
3 | Rod piston: 107.11.110.39 | 42CrMo alloy steel with hard chrome plating (plating thickness ≥0.05mm) | 1. Plating wear and peeling due to reciprocating friction with the bushing; 2. Bending deformation due to eccentric load caused by improper alignment. | 1. Lubricate the rod surface with high-pressure resistant grease every 100 working hours; 2. Check the coaxiality of the rod and liner monthly, adjust the pump's crosshead position if deviation is found. |
2. Sealing & Gasket Components (Fluid Leakage Prevention Core)
Essential for preventing high-pressure fluid leakage at the pump's connection and moving parts, ensuring system pressure stability. Poor sealing performance leads to fluid loss, environmental pollution, and reduced pump efficiency. Our seals and gaskets are made of chemical-resistant, high-pressure materials, matching the original pump's sealing groove design precisely.
No. | Product Models & Names | Material | Main Wear Causes | Damage Prevention Notes |
1 | Seals: 107.11.110.42, 107.10.110.03, 107.04.110.21 (Φ155×Φ140×10), 107.11.110.68, 107.04.110.13 (Φ210×Φ180×15), 107.11.110.60 | Fluororubber (Viton) for high-temperature/chemical resistance; nitrile rubber (NBR) for general service; PTFE composite for low-friction scenarios | 1. Material aging and cracking due to long-term exposure to high temperature (above 120℃) and drilling fluid chemicals; 2. Cutting and damage caused by burrs on the sealing groove during installation. | 1. Store seals in a dry, cool environment (temperature 0-25℃) to avoid aging; 2. Check the sealing groove for burrs before installation, polish with fine sandpaper if necessary, and use a press tool for uniform installation. |
2 | Gaskets: 107.11.110.56-1 (δ30), 107.11.110.57 (δ0.5), 107.11.110.58 (δ0.2) | Asbestos-free rubber asbestos sheet (δ30), copper-clad asbestos sheet (δ0.5/0.2), with anti-adhesive treatment | 1. Compression deformation and loss of elasticity due to excessive bolt torque; 2. Corrosion and delamination caused by drilling fluid immersion. | 1. Tighten bolts according to the specified torque (350-400N·m for M30 bolts) to avoid over-compression; 2. Replace gaskets immediately if drilling fluid seepage is found, and clean the flange surface before replacement. |
3 | Seal valve cover: 107.11.110.05 | NBR rubber with steel skeleton reinforcement | 1. Wear of the rubber surface due to valve cover vibration during pump operation; 2. Skeleton corrosion caused by moisture intrusion between the rubber and skeleton. | 1. Inspect the valve cover's tightness monthly, retighten bolts if loose; 2. Apply anti-corrosion grease to the skeleton contact surface during installation to prevent moisture intrusion. |
3. Connecting & Fastening Components (Structural Integrity Core)
Critical for securing the pump's fluid end, manifolds, and other components, ensuring structural stability under high-pressure and high-vibration conditions. Loose or damaged fasteners lead to component displacement, fluid leakage, and even severe pump damage. Our fasteners are made of high-strength alloy steel, with precise thread machining to match the original pump's mounting holes.
No. | Product Models & Names | Material | Main Wear Causes | Damage Prevention Notes |
1 | Studs & Bolts: 107.11.110.41-1, 107.11.110.17, 107.11.110.06, 107.11.110.12-1 (M39x3), 107.11.110.67, Bolt GB5782-86 (M20x90), Bolt GB5783-86 (M24x60) | 40Cr alloy steel (for studs), 35CrMo alloy steel (for high-pressure bolts), quenched and tempered treatment | 1. Thread wear and galling due to repeated disassembly and improper torque application; 2. Fatigue fracture caused by long-term vibration and alternating load. | 1. Use a torque wrench to apply the specified torque (280-320N·m for M20 bolts, 450-500N·m for M24 bolts); 2. Conduct magnetic particle inspection (MPI) every 6 months, replace studs/bolts with thread damage or fatigue cracks. |
2 | Nuts: 107.04.120.00 (M39x3), Nut C3-9-92 (M30x2), 107.04.110.29 (M39x3), Nut C3-9-92 (M36x3), Nut GB6170-86 (M20) | 45# carbon steel (for standard nuts), 40Cr alloy steel (for high-pressure nuts), with anti-galling thread treatment | 1. Thread stripping due to over-torque during tightening; 2. Corrosion and rust caused by moisture and drilling fluid splashing. | 1. Match nuts with corresponding studs (do not mix different specifications); 2. Apply anti-corrosion oil to threads after installation, and install protective caps for outdoor use. |
3 | Washers: Washer GB93-87 (20), Washer GB93-87 (24) | 65Mn spring steel, surface galvanized | 1. Loss of elasticity due to repeated compression and high-temperature baking; 2. Galvanized layer peeling and corrosion. | 1. Replace washers together with nuts/bolts during disassembly; 2. Avoid direct contact between washers and corrosive media, clean and dry promptly if contaminated by drilling fluid. |
4 | Locking components: Lock nut 107.04.120.00 (M39x3), Locking plate 107.11.110.65-1, Locking clip 107.11.110.52-1 | Lock nut: 40Cr; Locking plate/clip: 65Mn spring steel | 1. Locking plate/clip fatigue and deformation due to long-term vibration; 2. Lock nut thread wear due to repeated adjustment. | 1. Inspect the locking state of components weekly, replace deformed locking plates/clips immediately; 2. Tighten the lock nut to the specified torque after adjusting the main nut, and ensure the locking plate is fully engaged. |
4. Manifold & Cover Components (Fluid Distribution & Protection Core)
Essential for distributing drilling fluid (suction/discharge) and protecting internal components of the pump's fluid end. Damage to these components leads to fluid flow disorder, pressure loss, and internal parts contamination. Our manifolds and covers are made of high-strength steel with anti-corrosion coating, ensuring consistent flow channel size and tight fit with the original pump.
No. | Product Models & Names | Material | Main Wear Causes | Damage Prevention Notes |
1 | Manifolds: Discharge manifold 107.11.110.15, Suction manifold 107.11.112.00 | A216 WCB carbon steel, internal anti-corrosion coating (epoxy resin), flange surface precision machining | 1. Inner wall abrasion due to high-velocity fluid scouring at the manifold bends; 2. Flange sealing surface damage due to improper bolt tightening or collision during installation. | 1. Avoid sudden opening/closing of the manifold valve to reduce fluid impact; 2. Inspect the flange sealing surface for scratches monthly, polish with abrasive paper if necessary, and use a gasket of matching thickness. |
2 | Covers: Liner end cover 107.11.110.19, Cover 107.11.110.40, Cover 107.11.110.01, Valve cover 107.11.340.00 | 45# carbon steel (for covers), 40Cr alloy steel (for valve cover), surface anti-corrosion painting | 1. Deformation due to uneven bolt torque during installation; 2. Corrosion of the outer surface caused by long-term exposure to humidity and drilling fluid splashing. | 1. Tighten the cover bolts in a crisscross pattern to ensure uniform force; 2. Clean the outer surface of the cover regularly, touch up anti-corrosion paint if peeling occurs, and avoid collision during transportation and installation. |
3 | Flanges: Flange 107.11.112.05, Flange 107.11.110.59 | A105 carbon steel, flange sealing surface processed by lapping (surface roughness Ra≤0.8μm) | 1. Sealing surface wear due to repeated gasket replacement and friction; 2. Bolt hole deformation caused by over-torque during installation. | 1. Use a gasket of the correct material and specification to avoid damage to the sealing surface; 2. Align the flange accurately during installation, avoid forced assembly, and inspect bolt holes for deformation regularly. |
5. Valve & Internal Guide Components (Fluid Flow Control Core)
Critical for controlling the one-way flow of drilling fluid in the pump, ensuring stable suction and discharge. Malfunction of these components leads to fluid backflow, reduced pump displacement, and increased energy consumption. Our valves and guide components are made of wear-resistant, impact-resistant materials, matching the original pump's valve seat precision.
No. | Product Models & Names | Material | Main Wear Causes | Damage Prevention Notes |
1 | Valve components: Valve body 107.11.140.01, Valve rubber 107.11.140.03, Valve seat 107.11.140.04 | Valve body: 42CrMo alloy steel; Valve rubber: NBR with high elasticity; Valve seat: high-chromium alloy (Cr20) | 1. Valve rubber wear and tearing due to impact from fluid and solid particles; 2. Valve seat abrasion due to long-term contact with the valve rubber and fluid scouring. | 1. Control drilling fluid solid content to reduce particle impact; 2. Inspect the valve sealing performance monthly by pressure testing, replace valve rubber if leakage occurs, and grind the valve seat if wear is found. |
2 | Guide & buffer components: Guide ring 107.11.140.05-1, Spring 107.11.110.16, Bush 107.11.110.02, Liner bushing 107.11.110.18-1 | Guide ring/bushing: copper alloy (ZCuSn10Pb5) for wear resistance; Spring: 65Mn spring steel, tempered; Liner bushing: 40Cr with nitriding | 1. Guide ring/bushing wear due to reciprocating friction with the valve stem; 2. Spring fatigue and deformation due to long-term alternating load and high temperature. | 1. Lubricate the guide ring/bushing with high-temperature grease every 150 working hours; 2. Inspect the spring's elasticity quarterly, replace if deformation or fatigue cracks are found, and avoid over-compression during installation. |
6. Auxiliary & Protection Components (Operation Safety & Component Protection Core)
Essential for ensuring the safe operation of the pump and protecting key components from wear and contamination. These components include wear-resistant parts, connecting accessories, and safety protection parts, which extend the overall service life of the pump and reduce maintenance costs.
No. | Product Models & Names | Material | Main Wear Causes | Damage Prevention Notes |
1 | Wear-resistant parts: Wear plate 107.11.110.43 | NM450 wear-resistant steel, surface hardfacing (hardness HRC≥60) | 1. Surface wear due to long-term friction with moving parts; 2. Local impact damage caused by falling debris during operation. | 1. Inspect the wear plate surface monthly, replace if wear thickness exceeds 5mm; 2. Install protective baffles around the pump to avoid debris falling and impact. |
2 | Auxiliary accessories: Nipple 107.11.110.20, Spray hose 107.11.110.13.00-1, Piston rod clamp 107.11.114.00, Ring threaded 107.11.110.03, Plug GB3289.31-82 (R2), Support 107.11.110.54, Support 107.11.110.55, Cage 107.11.330.00 | Nipple/ring: 45# carbon steel; Spray hose: high-pressure rubber with steel wire reinforcement; Clamp/support: 40Cr alloy steel; Plug: 35# carbon steel; Cage: 20# carbon steel | 1. Spray hose aging and cracking due to high-pressure fluid and sun exposure; 2. Support deformation due to uneven load bearing; 3. Threaded parts corrosion and jamming. | 1. Replace the spray hose annually or if cracks are found, store spare hoses in a shaded environment; 2. Ensure the support is installed on a flat surface to avoid uneven load, and apply anti-corrosion oil to threaded parts regularly. |
On-Site Fault Maintenance Case
Case 1: During an onshore oilfield drilling operation, the LANZHOU LS 3NB1600 pump experienced a sudden drop in discharge pressure and obvious fluid leakage at the fluid end. On-site inspection found that the liner (107.11.110.27, Cr type) inner wall was severely abraded (wall thickness reduced by 15%), the piston (107.06.70.00, Φ170) rubber ring was cracked, and the seal (107.04.110.21) was damaged. Root cause: The drilling fluid solid content exceeded 0.3% for a long time, and the maintenance cycle of wearing parts was not followed. Solution: Replace the worn liner, piston, and seal with original-specification parts; install a 200-mesh high-efficiency filter at the pump suction port to control solid content ≤0.1%; formulate a monthly inspection plan for wearing parts. After maintenance, the pump discharge pressure returned to normal, and the continuous operation time reached 800 hours without failure, complying with GB/T 2900.53-2008 operational requirements.
Procurement & Technical Reference Standards
Procurement Reference Standards: All parts fully match the LANZHOU LS 3NB1600 drilling pump's original design specifications, complying with GB/T 2900.53-2008 "Petroleum and natural gas industry terminology - Drilling equipment" and GB/T 13306-2011 "Steel product marks and code names". For key wearing parts (liners, pistons), priority is given to materials that meet the wear-resistant and corrosion-resistant requirements specified in SY/T 5205-2018 "Drilling pump parts technical conditions". Technical Reference Standards: During installation and maintenance, refer to the LANZHOU LS 3NB1600 drilling pump operation manual, strictly follow the torque requirements for fasteners (GB/T 3098.1-2010 "Mechanical properties of fasteners - Bolts, screws and studs") and the sealing assembly specifications (GB/T 152.1-1988 "Countersunk head bolt and screw through holes").
Procurement Guidance
Our LANZHOU LS 3NB1600 drilling pump parts are 100% compatible with the original equipment, manufactured with high-quality materials and precise machining to ensure reliable performance and long service life. Whether you need to replace wearing parts, seal components, or fasteners, we can provide a one-stop procurement solution. Contact us today to obtain detailed product specifications, material certificates, and competitive quotes, and let our professional parts and technical support ensure the continuous and efficient operation of your LS 3NB1600 drilling pumps.
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