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Explore our precision-engineered valve casting solutions, designed for critical industrial valve and pump manufacturing environments worldwide.
Valve castings are precision-manufactured metal components produced through investment casting (lost-wax casting) or other casting processes. They form the structural backbone of industrial valves and pumps — including gate valves, globe valves, ball valves, butterfly valves, check valves, and centrifugal pump bodies used across oil & gas, chemical processing, water treatment, power generation, and heavy machinery industries.
The global industrial valve market was valued at over USD 80 billion in 2024 and is projected to surpass USD 110 billion by 2030, driven by rapid infrastructure development, energy transition investments, and expanding process industries in Asia-Pacific and North America. Valve castings represent the single largest cost component in valve manufacturing, typically accounting for 40–60% of total production cost.
Precision and material integrity are non-negotiable. A defective valve casting in a high-pressure pipeline or chemical reactor can trigger catastrophic failures. This is why global valve manufacturers increasingly rely on certified, technologically advanced casting suppliers like JUNLONG Machinery.
The lost-wax investment casting method enables complex geometries with tight tolerances (CT4–CT7), smooth surface finishes (Ra 3.2–12.5 μm), and near-net-shape production — minimizing machining waste and reducing lead times for valve body and pump housing components.
From carbon steel (WCB, WCC) and low-alloy steel (WC6, WC9) to duplex stainless steel (CF8M, CD4MCu) and high-nickel alloys — the right material selection for valve castings determines performance under extreme pressure, temperature, and corrosion conditions.
JUNLONG Machinery Co., Ltd. was founded in 2014. Located in Weifang, Shandong, the company covers a total area of 60,000 square meters and has an annual production capacity of 20,000 tons of precision castings and machined finished parts. It specializes in materials such as carbon steel, alloy steel, and stainless steel.
With over 200 employees, including more than 30 engineering technicians, the company is a high-quality casting supplier integrating precision casting and deep processing. JUNLONG serves as a trusted partner for global valve and pump manufacturers seeking reliable, certified, and competitively priced valve casting solutions.
Our products are exported to Germany, the United States, Italy, Canada, and other leading industrial markets — meeting the strict quality requirements of international valve and pump OEMs.
Our streamlined investment casting process ensures dimensional accuracy, metallurgical integrity, and consistent quality for every valve and pump casting order.
Precision wax injection into tooling
Multi-layer ceramic shell coating
Autoclave wax removal
Molten steel casting under control
Shot blast, heat treat, machining
CMM, NDT, hydrostatic test
Valve castings manufactured by JUNLONG serve the most demanding industrial environments across six major sectors globally.
High-pressure gate valves, globe valves, and check valves for upstream drilling, midstream pipeline, and downstream refinery operations. Materials: WCB, WC6, CF8M.
Corrosion-resistant valve castings in duplex stainless steel and high-alloy materials for aggressive acid, alkali, and solvent handling systems.
Pump casings, impellers, and butterfly valve bodies for municipal water supply, wastewater treatment plants, and desalination facilities.
High-temperature steam valves, turbine inlet valve bodies, and boiler feed pump castings for thermal, nuclear, and combined-cycle power plants.
Investment steel castings for railway braking valve systems, hydraulic pump components, and precision structural parts for rolling stock.
Hydraulic valve blocks, pump housings, and control valve bodies for excavators, cranes, drilling rigs, and mineral processing equipment.
Equipped with internationally advanced automated casting production facilities and comprehensive physical and chemical analysis equipment, the company significantly enhances manufacturing efficiency and product quality stability while meeting comprehensive testing requirements for the mechanical properties of different materials.
Leveraging strong engineering capabilities, a complete quality control system, and advanced management systems, the company has become a well-known brand manufacturer in the field of precision casting both domestically and internationally. Its products are exported to overseas markets, including Germany, the United States, Italy, Canada, and other countries.
The company serves as a key supplier of high-tech precision castings for industries such as automotive, rail transportation, engineering machinery, material handling machinery, agricultural machinery, and petroleum machinery. We provide high-quality products, services, and solutions to global industry leaders and mid-to-high-end clients in Europe and America.
The global valve casting industry is undergoing rapid transformation. Understanding these macro trends helps procurement teams and engineers make smarter sourcing decisions.
The global shift toward LNG, hydrogen pipelines, and renewable energy storage is driving unprecedented demand for cryogenic and high-pressure valve castings. Stainless steel and nickel-alloy castings for LNG terminal valves are among the fastest-growing segments through 2030.
Casting foundries are integrating AI-driven quality inspection, robotic wax injection, and real-time process monitoring. JUNLONG's automated casting lines reflect this shift — delivering tighter tolerances and faster turnaround times than traditional manual operations.
Post-pandemic supply chain disruptions have prompted European and North American valve OEMs to diversify sourcing. China-based foundries with ISO/TS certifications and proven export track records — like JUNLONG — are capturing increased long-term contracts from global buyers.
Environmental regulations are pushing valve manufacturers to adopt lighter, more durable casting materials. Duplex stainless steels and high-strength low-alloy (HSLA) steels are replacing heavier conventional materials, reducing system weight without compromising pressure ratings.
Global water scarcity and aging infrastructure are triggering massive public investment in water treatment and distribution systems. This directly fuels demand for pump casings, impellers, and flow-control valve castings in ductile iron, carbon steel, and stainless steel grades.
Advanced valve manufacturers are using digital twin technology to simulate casting solidification, predict shrinkage defects, and optimize gating systems before tooling is cut — dramatically reducing prototype cycles and improving first-article acceptance rates.
JUNLONG supplies valve castings across a broad range of steel grades, complying with ASTM, EN, DIN, and GB standards to meet international valve and pump manufacturing requirements.
ASTM A216 WCB/WCC — General-purpose valve bodies for water, steam, and oil service up to 425°C.
ASTM A217 WC6/WC9 — High-temperature valve castings for boiler and pressure vessel service to 595°C.
ASTM A351 CF8/CF8M/CF3M — Corrosion-resistant valve castings for chemical, food, and marine applications.
CD4MCu, 2205 duplex — Superior strength and pitting resistance for aggressive chemical and seawater service.
Furthermore, the company has obtained ISO 9001, TS 16949, UL, and other quality management system certifications, ensuring process control over every production detail and continuously pursuing and improving product quality to achieve high customer satisfaction.
Our quality system covers incoming raw material verification, in-process dimensional inspection, mechanical property testing (tensile, impact, hardness), non-destructive testing (UT, RT, MT, PT), and final hydrostatic pressure testing — ensuring every valve casting meets or exceeds customer specifications before shipment.
State-of-the-art casting and machining equipment ensures every valve casting component meets the tightest dimensional and metallurgical standards.
Our company will continue to strengthen research and development efforts for new products and technologies, integrate advanced management and technical resources, build a powerful brand, and strive to become a world-class precision casting supplier!
Whether you need valve body castings, pump housing castings, or complex precision investment castings — our engineering team is ready to review your drawings and provide a competitive quotation within 24 hours.
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Browse our full range of precision investment casting products for industrial valve, pump, and machinery manufacturing applications.
