High-performance casting solutions for the most demanding industrial environments.
The global petroleum industry is currently undergoing a structural transformation. As exploration moves toward high-pressure, high-temperature (HPHT) environments and subsea extraction, the demand for "near-net-shape" components that offer both material integrity and dimensional precision has skyrocketed. Investment casting, or the lost wax process, has emerged as the gold standard for manufacturing complex petroleum machinery parts such as valve bodies, pump impellers, and ESP (Electrical Submersible Pump) components.
Utilizing Super Duplex Stainless Steel and high-nickel alloys to combat H2S and CO2 corrosion in sour gas wells.
Unlike traditional sand casting, our investment casting reduces "Total Cost of Ownership" (TCO) by eliminating 40% of secondary machining requirements.
Strategically located in Weifang, Shandong, leveraging China's integrated industrial chain to provide 30% faster lead times for US and European OEMs.
As a leading OEM investment casting petroleum parts manufacturer, JUNLONG Machinery Co., Ltd. integrates advanced simulation software to predict metal flow and solidification, ensuring that every casting is free of internal porosity—a critical requirement for pressure-containing equipment in the oilfield.
Evolution of Casting Technologies toward Industry 4.0
Our commitment to E-E-A-T is reflected in our technical roadmap. We are moving beyond traditional casting into the era of AI-Optimized Thermal Profiling. By 2025, our production lines will integrate real-time sensor data to adjust the cooling rates of alloy steel castings, ensuring a perfectly uniform grain structure.
Focusing on 16Mn steel, 304/316 stainless steel, and specialized carbon steels. Our lab conducts spectral analysis and ultrasonic testing to ensure 100% compliance with API (American Petroleum Institute) standards.
For complex petroleum parts with intricate internal channels (like fluid control valves), we utilize 3D-printed wax patterns. This allows for rapid prototyping and validation without the upfront cost of hard tooling.
The petroleum sector is under pressure to decarbonize. Our factory implements closed-loop water recycling and energy-efficient induction furnaces to reduce the carbon footprint of every ton of precision casting produced.
Annual Production (Tons)
Factory Area (sqm)
Engineering Specialists
Strategic Manufacturing for International Markets
Our products meet UL and ASTM standards, specifically serving the shale gas basins in Texas and Alberta with high-durability pump accessories.
Fully compliant with DIN and ISO 9001 standards. We provide German and Italian machinery manufacturers with high-tolerance components for offshore platforms.
Integrated warehousing solutions and DDP shipping options to minimize the complexities of cross-border procurement for our OEM partners.
Founded in 2014 and located in Weifang, Shandong, JUNLONG covers 60,000 square meters. As a premier high-quality casting supplier, we integrate precision casting and deep processing. With an annual capacity of 20,000 tons, we specialize in materials critical for the petroleum industry: carbon steel, alloy steel, and stainless steel.
Where Precision Meets Performance
Drill bit bodies, downhole tool components, and ESP cable protectors designed for extreme borehole pressures.
High-precision valve accessories and pump housing parts that ensure leak-proof transport of crude oil and natural gas.
Heat exchanger components and chemical processing fittings resistant to thermal fatigue and corrosive catalysts.
A: Investment casting provides a superior surface finish (Ra 3.2 or better) and tighter tolerances. In petroleum fluid control, this reduces turbulence and erosion, significantly extending the life of the valve.
A: We utilize vacuum-assisted pouring and strictly controlled shell pre-heating temperatures. Every batch undergoes X-ray or Magnetic Particle Inspection (MPI) to ensure structural integrity under high-pressure conditions.
A: Yes. Our 3D wax printing technology allows us to produce small batches of complex petroleum parts without the lead time or cost of traditional steel molds.
A: For subsea environments, we recommend 316L Stainless Steel or Alloy Steel with specialized surface treatments (like zinc-nickel plating) to resist salt-water corrosion and hydrogen-induced cracking.
Advanced manufacturing for automotive, rail, and energy sectors.
Partner with JUNLONG for world-class OEM investment casting. Our engineering team is ready to provide you with a comprehensive technical consultation and quote.
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