Premium BI-METAL LINERS for Oil & Gas Drilling
Our bi-metal liners are engineered for durability, precision, and performance in high-pressure drilling operations.Each liner is manufactured to meet or exceed API 7K standards, ensuring maximum service life and minimal maintenance.
Feature
- Outer Hull: #45 steel forging,HB163-217;
- Inner Sleeve: high chromium cast iron centrifugal casting, HRC≥60;
- HP lip design to prevent inner sleeve slippage;
- Surface finish for inner sleeve Ra0.05, much higher than API standard Ra0.2;
- Service Life: not less than 800 hours under normal working condition;
- High Chromium Content: 26%-28%
- Operating Pressure: 7500 PSI
Chemical Composition of Outer Hull:
Chemical Composition | C | Mn | Si | P | S | Cr |
Content (%) | 0.42-0.50 | 0.5-0.8 | 0.17-0.37 | <0.06 | <0.05 | <0.25 |
Chemical Composition of Inner Sleeve:
C | Mn | Si | P | S | Cr | Mo | Ni | Cu |
2.80-3.10 | 0.5-1.0 | 0.50-0.80 | ≤0.10 | ≤0.06 | 26-28 | 0-1.0 | 0-1.5 | 0-2.0 |
Explore Our BI-METAL LINER
| Brand | Model |
|---|---|
| BOMCO | F500, F800/1000, F1300/1600, F1600HL, F2200HL |
| EMSCO | F500, F800/1000, FB1300/1600, FC-1600, FC-2200 |
| NATIONAL | 7P50, 8P80, 9P100, 10P130, 12P160, 14P220 |
| OILWELL | A600PT, A850PT, A1100PT, A1400PT, A1700PT |
| GARDNER DENVER | PAH, PJ8, PZ7, PZ8, PZ9, PZ10, PZ11, PZ11L |
| IDECO | T500, T800, T1000, T1300, T1600 |
| DRILLMEC | 9T1000, 12T1600, 14T2200 |
| WIRTH | TPK1000, TPK1600, TPK2200 |
| RUSSIAN PUMP | 8T650, UNB600, NBT600, UNBT950, UNBT1180L |
| WEATHERFORD | MP5, MP8, MP10, MP16 |
| HONGHUA | HHF500, HHF800/1000, HHF1300/1600, HHF1600HL, 3NB-1300F/1600F |
| RONGSHENG | RSF500, RSF800/1000, RSF1300/1600 |
| RG | RGF500, RGF800/1000, RGF1300/1600 |
| LANSHI | 3NB1000C, 3NB1300C, 3NB1600 |
| QZ | 3NB800, 3NB1000, 3NB1300A, 3NB1600 |
BI-METAL LINER & Seat & Spare Parts – Buyer FAQs
Q1: What are bi-metal liners used for?
They form the cylinder chamber in a mud pump, helping generate pressure to circulate drilling fluid.
Q2: What materials do you offer?
Outer Hull: #45 steel forged, inner sleeve is for high chromium cast iron.
Q3:Which pump models are your liners compatible with?
Our liners fit popular brands like EMSCO, National, Gardner Denver, and others.
Q4: What is the lifespan of your liners?
At least 800 hours under normal working condition for bi-metal liners, even more than 1000 hours.
Q5:Do you support OEM and private labeling?
Yes, we offer full OEM services including logo engraving and customized packaging.
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