The steel chrome-plated barrel for rod pump is a key downhole component used in sucker rod pumping systems for oil extraction. It is designed according to API 11AX standards, ensuring compatibility with standard rod pump assemblies used in oilfields worldwide.
This barrel is manufactured from high-strength alloy steel and treated with precision hard chrome plating to significantly improve wear resistance, corrosion resistance, and service life under harsh downhole conditions.
It is widely used in deep wells, high-sand wells, and corrosive oilfield environments where stable and long-term pumping performance is required.
| Item | Specification |
| Product Type | Rod Pump Barrel (Chrome Plated) |
| Standard | API 11AX |
| Material | High-strength alloy steel (e.g., 45# / 20CrMo or customized) |
| Inner Surface Treatment | Hard chrome plating |
| Chrome Thickness | 0.05 – 0.10 mm (customizable) |
| Hardness | ≥ HRC 60 (chrome layer) |
| Surface Roughness | Ra ≤ 0.2 μm |
| Length | Customized (standard & non-standard available) |
| Diameter Range | API standard sizes available |
| Application | Oilfield downhole sucker rod pump system |
The hard chrome plated inner surface significantly reduces friction between plunger and barrel, minimizing wear during long-term reciprocating operation.
Suitable for oil wells containing:
H₂S gas
CO₂ corrosion environments
saline formation water
Compared with standard untreated barrels, chrome-plated barrels can significantly extend pump inspection cycles and reduce workover frequency.
Precision machining ensures:
Reduced leakage rate
Improved volumetric efficiency
Fully compatible with API 11AX rod pump systems, ensuring interchangeability with global oilfield equipment.
This product is widely used in the following oilfield environments:
Deep and ultra-deep oil wells
High sand content wells
High corrosion wells (H₂S / CO₂)
Offshore oil production systems
High-temperature downhole conditions
To ensure stable performance in harsh oilfield environments, each barrel undergoes strict production and inspection procedures:
Raw material selection & forging
Rough machining
Heat treatment
Precision honing
Hard chrome plating
Final grinding & polishing
Inner diameter measurement
Chrome layer thickness test
Hardness testing (HV/HRC)
Surface roughness inspection
Straightness and concentricity check
We provide flexible customization based on customer requirements:
Custom barrel length
Special alloy steel materials
Adjustable chrome thickness
Non-standard API dimensions
Matching plunger compatibility design
OEM / ODM services are available for oilfield equipment distributors and service companies.
Stable production capability for oilfield components
Strict API-standard manufacturing system
Advanced chrome plating technology
Consistent dimensional accuracy control
Export experience for global oilfield markets
Our barrels are designed to improve pump reliability, reduce downtime, and lower total operating costs for oil production companies.
Anti-rust oil protection
Wooden case or steel frame packaging
Shock-resistant export packaging
Global shipping support
Lead time depends on order quantity and customization requirements.
Q1: What is the main advantage of a chrome-plated barrel?
It significantly improves wear resistance and corrosion resistance, extending pump service life in harsh oilfield conditions.
Q2: Is it compatible with API rod pump systems?
Yes, it is manufactured according to API 11AX standards and is fully compatible.
Q3: Can you customize the size and material?
Yes, we support OEM customization based on well conditions and technical requirements.
