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Since 2005, we have been a trusted manufacturer of high-quality cast iron products including manhole covers, drainage channels, tree gratings, and grooved couplings. Located in Changyi, Shandong — China's renowned casting hub — we deliver durable, reliable infrastructure components to clients worldwide.
A leading manufacturer of cast iron infrastructure products with over 18 years of experience in design, production, and global export.
Founded in 2005 and located in Changyi City, Shandong Province — one of China’s most prominent casting industry centers — Changyi Changzhan Casting Co., Ltd. has built a strong reputation for quality, reliability, and innovation.
Our strategic location offers superior geographical advantages with convenient transportation access, enabling efficient logistics and timely delivery to domestic and international markets.
We specialize in manufacturing a wide range of ductile iron and gray iron products that meet international standards such as EN124, ASTM, and ISO. Our products are widely used in urban infrastructure, construction, water systems, and industrial applications.
High-performance cast iron solutions engineered for durability, safety, and long-term reliability.
Available in various models including CZ-1101A, CZ-1117B, CZ-1103D (EN1 compliant), and CZ-1113D. Durable ductile iron construction for heavy-duty urban applications.
CZ-2101 composite surface box designed for underground utility access. Weather-resistant, secure, and easy to install in sidewalks and paved areas.
CZ-4102-1C to CZ-4102-XX series. Efficient linear drainage systems with corrosion-resistant grates. Ideal for roads, plazas, and industrial zones.
Protect urban trees with our cast iron tree grates. Models include CZ-5104C to CZ-5107D. Prevent soil compaction and ensure root aeration.
RIGID COUPLING series and other grooved solutions for piping systems. Leak-proof, vibration-resistant, and fast to install without welding.
Comprehensive range of installation accessories including bolts, seals, brackets, and support components for complete system integration.
Heavy-duty manhole covers from CZ-6101 to CZ-6XXX series. Designed for high-traffic zones with load ratings up to D400 (EN124 standard).
Custom casting solutions for specialized infrastructure needs. OEM/ODM services available with strict quality control and global certifications.
At Changzhan Casting, quality is at the heart of everything we do. Our manufacturing process follows international standards and includes multiple inspection stages — from raw material selection to final packaging.
Our commitment to excellence has earned us recognition in construction projects across Asia, Europe, the Middle East, and the Americas.
We primarily use ductile iron (GGG50) and gray iron (GG25) that meet international standards. These materials offer excellent strength, durability, and corrosion resistance.
Yes, we provide OEM and ODM services. Our engineering team can work with your specifications to produce custom manhole covers, gratings, and fittings.
Our products comply with EN124, ASTM, and ISO standards. We conduct regular third-party testing and maintain full traceability for every batch produced.
Our standard MOQ is 50 units per model, but we can accommodate smaller trial orders for new clients. Contact us for specific product inquiries.
We export globally via sea freight from Qingdao Port. We manage all documentation and can deliver to your specified destination with FOB, CIF, or DDP terms.
Reach out to us for product inquiries, quotations, or technical support.
Company: Changyi City Changzhan Casting Co., Ltd
Phone: +86-546-6066228
Fax: +86-546-7086281
Email: [email protected]
Address: No.184, Liugu Road, Industrial Park, Weizi Town, Changyi City, Shandong Province, P.R. China
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