JUNLONG Machinery Co., Ltd., located in Weifang, Shandong, is a premier global casting leader specializing in high-performance materials including WCB carbon steel, alloy steel, and stainless steel.
Covering an expansive 60,000 square meters, our facility integrates the entire value chain—from initial mold design to advanced precision machining. With an annual output of 20,000 tons, we serve as a critical partner for mid-to-high-end industrial leaders across Europe, North America, and Asia.
ASTM A216 Grade WCB is the industry benchmark for "Weldable Cast Carbon" steel. It is essential for pressure-containing parts in oil and gas refineries where structural integrity and onsite maintenance are non-negotiable.
Commonly utilized in valves, pumps, and flanges, WCB steel provides the necessary ductility and tensile strength to withstand extreme operating pressures in municipal and industrial fluid systems.
Compared to high-alloy steels, WCB offers a significant "Information Gain" in terms of ROI—providing robust mechanical properties at a competitive price point for large-scale infrastructure projects.
The global demand for Custom WCB steel castings is experiencing a CAGR of 4.5%, driven by the resurgence of traditional energy sectors and the expansion of smart water management systems. Procurement teams today are moving away from simple "lowest-price" models toward Value-Chain Integration. Buyers are seeking factories that offer not just raw castings, but fully machined, TS16949-certified components that reduce their own secondary processing costs.
China remains the powerhouse for this industry due to its unique "Industrial Cluster" efficiency. Regions like Shandong provide a concentrated supply of high-grade raw materials and specialized labor, allowing factories like JUNLONG to deliver high-precision parts with lead times 30% faster than Western competitors.
Equipped with internationally advanced automated casting production facilities, we ensure product quality stability while meeting rigorous mechanical property testing requirements.
We hold ISO 9001, TS 16949, and UL certifications. Every production detail is tracked through our comprehensive physical and chemical analysis equipment.
Our workshop features horizontal/vertical machining centers and CNC lathes, providing a seamless transition from rough blank to finished precision component.
Currently exporting to the United States, Germany, Italy, and Canada, serving global leaders in automotive, rail transportation, and petroleum machinery.
With over 30 engineering technicians, we provide one-stop R&D support, transforming complex design concepts into high-reliability casting solutions.
Beyond WCB, we specialize in high manganese steel, alloy steel, and various grades of stainless steel to meet diverse application needs.
WCB steel castings are the "bones" of global infrastructure. Our components are specifically engineered for:
Ensuring process control over every production detail to achieve 100% customer satisfaction.
WCB is a higher carbon grade suitable for general high-temperature service, while WCC is designed for lower-temperature service where improved toughness is required. JUNLONG provides both based on your specific application environment.
Chinese factories like JUNLONG leverage a complete industrial supply chain, advanced automated equipment, and lower logistical overhead, providing a significant cost advantage without compromising on certifications like TS16949.
With an annual capacity of 20,000 tons, we handle parts ranging from small intricate gears to large-scale industrial valve bodies, utilizing lost-wax casting for superior surface finish.
We utilize physical and chemical analysis equipment, including spectroscopic analysis and non-destructive testing (NDT), to ensure there are no internal blowholes or cracks, essential for pressure-containing parts.
Junlong
