Oil & Gas Parts Manufacturer & CNC Machining Services

JuPai is a professional CNC machining manufacturer specializing in high-precision metal and plastic parts, with an in-house factory established in 2014. Backed by over 150 advanced machines—including 5-axis machining centers such as DMG, Mazak, and Matsuura—and a strong engineering team, we deliver one-stop solutions from prototyping to mass production across milling, turning, sheet metal fabrication, and 3D printing. Certified to ISO 9001, ISO 13485, IATF 16949, and GJB9001C, JuPai ensures strict quality control, tight tolerances, and reliable performance. Our core capabilities include CNC machining, precision machining, large part machining, heat treatment, surface finishing, and full inspection. Our oil & gas parts are widely used in exploration, offshore platforms, and petrochemical systems. To date, we have produced over 100,000 unique parts, served 300+ companies, and exported to 30+ countries, delivering cost-effective, high-performance machining solutions worldwide.

Our Customers

JuPai Manufacturing has delivered reliable experience to over 300 customers by producing more than 100,000 oil and gas parts.

Our Capabilities and Services

CNC Machining

Our advanced CNC machining systems support multi-axis milling and turning, enabling the production of highly complex oilfield components with repeatable accuracy.

3-axis, 4-axis, and 5-axis CNC machining
CNC turning up to large diameters
Materials: stainless steel, duplex, inconel, alloy steels, duplex & super duplex stainless steel, hastelloy, titanium, aluminum, carbon steel, brass, copper

Precision Machining

Precision machining is critical for sealing performance, pressure integrity, and operational safety in oil and gas equipment.

Ultra-tight tolerance control
High-precision tolerances down to ±0.002 mm
Surface roughness optimization (Ra ≤ 0.8 μm achievable)
Dimensional stability under thermal and pressure loads

Large Part Machining

We are equipped to handle large and heavy components machining required in oilfield infrastructure.

Machining capacity for oversized parts (customizable up to several meters)
Large part machining up to 3 meters
Heavy-duty CNC horizontal boring mills
Stable fixturing for deformation control
On-site handling and logistics coordination

Surface Finishing

Surface finishing directly impacts corrosion resistance, fatigue life, and sealing reliability.

Anti-corrosion coatings (e.g., nickel plating, phosphating)
Shot blasting and passivation
Precision grinding and polishing
Surface treatments for harsh environments (H₂S, saltwater exposure)

Quality Assurance & Inspection

Quality is embedded in every stage of production:

First Article Inspection (FAI)
In-process inspection and statistical process control (SPC)
Coordinate Measuring Machine (CMM) verification
Non-destructive testing (NDT) options available

Rapid Prototyping

We provide fast and flexible rapid prototyping services to accelerate product development and validation.

CNC prototyping for oil & gas parts and their functional testing
3D printing for complex geometries
Fast turnaround (short lead times)
Design validation and iteration support
Material options for real-world performance testing

Our Oil and Gas Parts

Custom Pneumatic Manifold Block Machining Services

Expert pneumatic manifold block machining with precision CNC machining, high-quality materials, and fast delivery. Get fully customized manifold blocks for your equipment.

Custom Manifold Block Machining Services

Professional CNC machining for hydraulic, pneumatic, vacuum, and custom manifold blocks. Tight tolerance, leak-proof design, fast delivery.

Precision machined junction block for high-tolerance, corrosion-resistant components for oil and gas applications

Junction Block Machining Services

Custom Junction Blocks Machined to Spec | Our precision CNC drilling and milling ensures ±0.002mm accuracy for fluid channels, guaranteeing efficient system performance.

Custom Hydraulic Manifold Block Machining Services

Professional custom hydraulic manifold block machining services for high-pressure oilfield & industrial systems. Precision CNC machining, deep hole drilling, strict pressure testing, and leak-free design.

Precision CNC machined valve block with integrated ports for hydraulic and pneumatic systems

Valve Block Machining Services

Custom Valve Block Machined to Spec | Our precision CNC drilling and milling ensures ±0.002mm accuracy for fluid channels, guaranteeing efficient hydraulic system performance.

Precision machined valve seat with sealing surface for industrial flow control valves

Valve Seat Machining Services

Custom Valve Seats Machined to Spec | Our precision CNC grinding and polishing ensures ±0.002mm accuracy for sealing surfaces, guaranteeing leak-free performance in critical valve

Precision CNC machined valve plug for industrial flow control systems

Oil and Gas Valve Plug Machining Services

Custom Valve Plugs Machined to Spec | Our precision CNC machining ensures ±0.002mm accuracy for sealing surfaces, guaranteeing leak-free performance in critical applications.

On-Demand Air Manifold Block Machining Services

Professional Air Manifold Block Machining services using premium Aluminum & Stainless Steel. Engineered for high-pressure durability and maximum flow efficiency at competitive prices.

Articles for Oil & Gas Field

Why Not All Valve Plugs Are Created Equal in Oil & Gas Infrastructure

Learn the critical differences between rotary plug valves and pipeline isolation plugs in oil and gas infrastructure, including engineering principles, failure modes, and specification best

Carbon Steel vs Aluminum vs Stainless Steel manifold blocks comparison

Carbon Steel vs. Aluminum vs. Stainless Steel in Manifold Blocks

Carbon Steel, Aluminum or Stainless Steel – which material is best for your manifold blocks? Complete comparison of pressure rating, weight, durability & cost to

Air Manifold Block vs Vacuum Manifold Block

Compare air manifold blocks vs vacuum manifold blocks—discover efficiency, leakage control, and maintenance differences to choose the right solution for industrial systems.

Hydraulic Manifold Block vs Pneumatic Manifold Block

Discover which manifold block fits your operation best—hydraulic for high‑pressure reliability or pneumatic for cost‑effective control. Real application data included.

High-performance hydraulic motor system for oil and gas pump operations

Hydraulic Motor Efficiency Case Study for Oil & Gas Pumps

Boost oil & gas pump efficiency with advanced hydraulic motor solutions. See real-world results from this in-depth case study.

Hydraulic manifold block improving high‑pressure system reliability

How a Hydraulic Manifold Block Improved High-Pressure System Performance

Case study: Hydraulic manifold block application boosted reliability in high‑pressure environments, delivering measurable cost savings and operational efficiency.

Valve body machining for oil & gas sealing reliability

Valve Body Machining and Finishing Processes in Oil & Gas Industry

Optimize oil & gas performance with valve body machining and finishing processes that cut failure rates below 2% and improve operational reliability.

Valve Body vs Manifold Block

Discover the key differences between valve bodies and manifold blocks in hydraulic and oil & gas systems. Learn how each impacts efficiency, maintenance, and system

Why Choose JuPai for Oil & Gas Parts Machining

Advanced 5-Axis CNC Machining for Complex Oil & Gas Components

Equipped with advanced 5-axis CNC machining centers, we manufacture complex oil & gas components featuring intricate geometries, deep cavities, and multi-angle features in a single setup. This reduces setup errors, improves dimensional accuracy, and ensures consistent quality for high-pressure and mission-critical applications.

Ultra-Tight Tolerances (±0.002 mm) for Sealing-Critical Components

We deliver high-precision CNC machining with ultra-tight tolerances for oil & gas components where sealing performance is critical. Precise dimensional control ensures proper assembly, minimizes leakage risks, and enhances reliability in high-pressure and sour service environments.

High-Pressure Capability (Up to 20,000 PSI)

Our machining capabilities are engineered for extreme pressure environments up to 20,000 PSI, including wellhead systems, subsea equipment, and hydraulic fracturing applications. We ensure structural integrity, fatigue resistance, and long-term performance under continuous high-load conditions.

Expertise in Corrosion-Resistant & NACE-Compliant Materials

We specialize in machining high-performance materials such as Inconel (625/718), Duplex and Super Duplex stainless steels, titanium alloys, and high-strength alloy steels. NACE-compliant material options are available for sour service applications, ensuring superior corrosion resistance and durability in H₂S and other harsh environments.

Comprehensive Quality Control with CMM & NDT Inspection

Our quality assurance system spans the entire production process, including CMM inspection, in-process monitoring, and non-destructive testing (UT, RT, PT). Full material traceability and detailed inspection reports ensure compliance with oil & gas industry standards and help reduce project risk.