In the modern global chemical processing industry, the demand for precision investment casting (Lost Wax Casting) has reached an all-time high. Unlike traditional sand casting, lost wax casting provides the Information Gain required for critical safety components. Chemical plants operate under extreme pressure, high temperatures, and highly corrosive atmospheres, where a single structural flaw in a valve or pump housing can lead to catastrophic failure.
JUNLONG Machinery Co., Ltd. addresses these challenges by integrating advanced metallurgical science with automated precision casting. Our chemical components are designed to meet the rigorous demands of:
Founded in 2014, JUNLONG Machinery Co., Ltd. has established itself as a cornerstone of high-quality casting in Weifang, Shandong. We don't just supply parts; we engineer reliability into every gram of steel.
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Our workforce of over 200 employees, including 30+ senior engineering technicians, ensures that every project from carbon steel to complex alloy and stainless steel meets international benchmarks.
We are transitioning towards AI-enhanced thermal imaging and solidification simulation. By predicting porosity before the first pour, we ensure 99.9% structural integrity for chemical pressure vessels.
Development of Super Duplex Stainless Steels (e.g., S32750) for extreme offshore chemical applications, offering double the strength of standard austenitic grades.
Our roadmap includes a 30% reduction in carbon footprint by 2030 through closed-loop wax recovery and high-efficiency induction melting furnaces.
High-strength components for harvesters and farming equipment requiring wear resistance in soil-contact environments.
Critical valve bodies and pump housings engineered for high-pressure fluid control and chemical stability.
Precision cast train parts and automobile components focusing on fatigue resistance and lightweight optimization.
Our commitment to quality is backed by international certifications, ensuring that our products are ready for the most regulated markets including Germany, the USA, Italy, and Canada.
We provide localized engineering support, bridging the gap between Chinese manufacturing efficiency and Western technical specifications (ASTM, DIN, EN, JIS).
Lost wax casting (investment casting) allows for the production of complex geometries with excellent surface finishes (Ra 3.2 or better). This reduces the need for expensive secondary machining and ensures that chemical-contact surfaces are smooth, minimizing corrosion initiation sites.
Typically, 316L stainless steel is the standard for chemical resistance. However, for more aggressive media, we recommend Duplex steels or specialized Alloy steels which offer higher resistance to pitting and stress corrosion cracking.
We use a combination of physical and chemical analysis, including spectral analysis, X-ray flaw detection, and magnetic particle inspection, alongside pressure testing to ensure every component meets the safety requirements of the petroleum and chemical industries.
Sample development usually takes 3-4 weeks (including mold manufacturing), and mass production typically follows a 4-6 week cycle depending on complexity and surface treatment requirements.
Our company will continue to strengthen research and development efforts for new products and technologies, integrate advanced management and technical resources, and strive to become your world-class precision casting partner.
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