Oil and Gas Large Part Machining Services
Our specialized large part machining solutions (up to 3 meters) are engineered to support the most critical, high-integrity components across the global oil and gas industry. From massive blowout preventers and subsea manifolds to large-diameter flanges and heavy structural components, we deliver precision, strength, and reliability for operations in extreme offshore, downhole, and refining environments.
Large Part Machining Services for the Oil and Gas Industry
JuPai offers large part machining capabilities, ideal for rapid prototyping and custom production orders. With our own facilities and extensive manufacturing network, we are able to efficiently deliver complex, high-quality and large-scale oil & gas parts.
CNC Vertical & Horizontal Boring
- Machining massive blowout preventer (BOP) housings with strict concentricity and flatness
- Precision boring of large valve bodies for reliable sealing under extreme pressure
- Accommodating oversized castings and forgings with complex internal profiles
Deep Hole Drilling & Honing
- Precision deep hole drilling for long-axis drill collars and downhole tools
- High-precision honing for tight-tolerance ID finishes and consistent wall thickness
- Machining specialized piping and tubular components for subsea and surface systems
5‑Axis Complex Milling
- Complex contouring for subsea manifolds and flow control components
- Precision machining of turbine components and high-performance structural parts
- One-setup production for reduced cycle times and improved dimensional accuracy
Large‑Diameter Turning
- Machining large mandrels, rotors, and drive shafts for rig and refinery equipment
- Producing large‑scale flanges with precise facing, grooving, and threading
- Handling heavy, large‑diameter forgings with consistent wall thickness and balance
Large‑Scale CNC Planer Milling
- Precision face milling for pressure vessel end plates and manifold base structures
- Profile machining of large wear plates and rig foundation components
- Ensuring tight flatness and surface finish for critical assembly interfaces
Heavy‑Duty Precision Grinding
- Surface and cylindrical grinding for large shaft seats and bearing journals
- High-precision finishing of valve seats and pressure‑critical sealing surfaces
- Enhancing wear resistance and extending service life in extreme oilfield environments
Our Technical Advantages in Large Part Oil & Gas Machining
Choosing our large-part machining services means partnering with a team that deeply understands the unique demands of oversized, high-pressure, and corrosion-resistant oilfield components. We combine heavy-capacity equipment, tight-tolerance precision, and industry expertise to ensure performance under extreme conditions.
Material Expertise for Extreme Oilfield Environments
We specialize in machining large-format components from high-strength, corrosion-resistant alloys engineered to withstand harsh drilling, subsea, and refining conditions.
Metals:
Inconel, Hastelloy, Monel, Titanium Alloys, Duplex & Super Duplex Stainless Steel, Incoloy, Nickel-Based Alloys
Engineering Plastics:
PEEK, PTFE (Teflon), UHMW, Nylon, Delrin, Polycarbonate
Our material expertise ensures resistance to corrosion, pressure, and extreme temperatures.
Precision, Quality, and Reliability
From advanced CNC machining to rigorous inspection and testing, we ensure every part meets tight tolerances and performs consistently in demanding environments.
Quality is critical in oil & gas applications. Our ISO 9001:2015-certified quality system ensures every part meets strict industry standards.
- Precision CNC machining for large-scale forgings and castings
- Full inspection and dimensional verification for oversized parts
- Strict compliance with oil and gas industry specifications
- Consistent quality for high-pressure, safety-critical applications
Engineering Support & Value-Added Services
We provide end-to-end support tailored specifically for large oil and gas components, optimizing manufacturability while reducing lead times and risk.
- Design for Manufacturing (DFM) for large-format components
- Reverse engineering for oversized oilfield equipment
- Finite Element Analysis (FEA) for structural and pressure performance
- Prototyping for large-scale tooling and components
- Precision finishing, treatment, and assembly
- Turnkey project management for complete large-part solutions
Our approach reduces lead times, costs, and production risks.
Applications in the Oil & Gas Industry
Our large-part machining capabilities support mission-critical equipment across the entire oil and gas value chain, delivering rugged, high-precision components built for extreme environments.
Oil & Gas Exploration
- Drilling tools and downhole components
- MWD / LWD system housings
- Large-format drill string parts
- High-strength rig components
Offshore & Subsea Systems
- Subsea manifold components
- Riser system parts and connectors
- Large subsea valve bodies
- Structural platform components
Oilfield Completion & Production Tools
- Frac valves and fluid ends
- Packers and large completion tools
- Downhole tool housings
- High-strength connectors and couplings
Wellhead & Pressure Control
- BOP housings and components
- Casing heads and tubing heads
- Large-scale hangers and sealing systems
- Christmas tree components
Natural Gas Transmission & Pipeline
- Large pipeline valves and actuators
- Compressor components
- High-pressure flanges and connectors
- Flow control and sealing systems
Refining & Petrochemical
- Pump and valve components
- Heat exchanger parts
- Large reactor and vessel components
- Flow control and fluid handling systems
