
ISO certified manufacturer of heavy beam clamps. Custom casting solutions using clay sand and shell molding. CE, UL, FM approved. Factory direct prices for US and EU markets. Request a quote today.
Customized Cast Iron and Steel Beam Clamps | Ductile/High Tensile Cast Iron C-Clamp for Support Structures | Qingdao Zhaoyuqi Mechanical Engineering
Title: Beam clamps for reliable connections in structures
Qingdao Zhaoyuqi Machinery Company specializes in the production of high-performance beam stirrups (also known as C-beam stirrups or H-beam stirrups) designed for critical structural applications. Unlike standard fasteners, our clamps are manufactured using advanced sand casting and shell molding technologies to provide superior grain structure and mechanical strength.
Whether you need standard ductile iron clamps for pipeline supports or custom heavy duty ductile iron clamps for hanging industrial equipment, our foundry guarantees consistent quality that meets ASTM, DIN and JIS standards. We combine the capabilities of raw casting and finished industrial fasteners to provide reliable solutions for construction, MEP and heavy industrial applications in North America, Europe and South America.
Superior Metallurgical Integrity: Manufactured with controlled cooling on our clay sand lines, the clamps feature minimal porosity and higher tensile strength than conventional sand counterparts.
Wide range of materials: Available in ductile iron (GGG-40/QT450) for toughness or ductile iron (GGG-50/QT500) for higher loads. Carbon steel casting is also available for extreme conditions.
Precision Thread Machining: After casting, CNC machines ensure precision threads (UNC/UNF/metric), preventing stripping and ensuring reliable tightening torque.
Anti-Corrosion Coatings: Standard hot-dip galvanized, galvanized or special epoxy powder coating for use in harsh outdoor or chemical environments.
Individual geometry: Thanks to the capabilities of gasification casting and tooling, we can quickly produce prototypes of non-standard shapes of clamps for various beam profiles (I-beams, channels, angles) without long lead times and expensive tooling.
Our beam clamps are designed for durability in a variety of sectors:
Construction and Infrastructure: Suspended ceiling systems, HVAC duct supports, installation of fire sprinkler piping on steel structures.
Industrial manufacturing: Attachment points for conveyor systems, lighting trusses and cable trays in factories and warehouses.
Energy and Electricity: Support structures for solar panel mounting frames and wind turbine internal cabling.
Shipbuilding and Offshore: Corrosion resistant clamps for marine environments (requires special coating).
Mining and Heavy Equipment: High load connection points for underground support systems.
From sand to strength: our casting process
Tooling manufacturing: We use 3D scanning and CAD modeling to create accurate models for clay-sand or shell molding.
Molding: Automated molding lines ensure consistent sand density, reducing dimensional variations.
Pouring and Solidification: Strict control of melt temperature prevents shrinkage defects.
Heat Treatment: Normalization or annealing relieves internal stresses, increasing the ductility of ductile/ductile iron.
Machining and finishing: CNC threading and surface treatment for corrosion protection.
Quality control: Each batch goes through:
Checking dimensions: Coordinate measuring machine.
Mechanical testing: Tensile and yield tests according to ASTM standards.
Load Testing: Random test load testing to confirm working load safety factors.
Customization and OEM/ODM services
We understand that standard sizes do not fit every project. As a direct manufacturer, we offer:
From drawing to product: Submit your 2D/3D drawings (STEP, IGES, PDF). Our engineering team will evaluate manufacturability and provide design recommendations for production.
Material Change: Need more strength? We can change from ductile iron to ductile iron or steel without major tooling changes.
Private Labeling: Custom packaging and logo application by injection molding or stamping for distributors and brands.
Direct factory prices: No intermediaries. You pay for the product, not for a markup.
Expert knowledge of export regulations: We are very familiar with US metal tariffs (2026 updates) and the EU cross-border carbon adjustment mechanism. We provide full material traceability and carbon footprint data upon request.
Flexible MOQ: Whether you need a container or a small trial order, our production lines are optimized for flexibility.
Proven Experience: We have successfully delivered products to customers in Germany, USA, Brazil and Chile with an on-time delivery rate of over 98%.
ISO 9001:2015: Quality management system certified.
CE marking: Compliance with the European Machinery Directive for relevant components.
RoHS/REACH: Compliance of materials with environmental requirements.
Factory Test Certificates: Provided with each batch indicating chemical composition and mechanical properties.
(Optional, but recommended): UL/FM/VdS: We can help obtain specific product certifications if required for large construction projects.
Packing:
Small items: Packed in strong cardboard boxes with inner plastic bags to protect them from moisture.
Heavy products: Wooden pallets with metal straps, suitable for loading with forklifts.
Custom packaging is possible upon request.
Delivery terms: FOB Qingdao, CIF, DDP to major US/EU ports.
Production time:
Standard products: 15-20 days.
Individual castings: 25-35 days (depending on the complexity of the tooling).
Yes, we strictly adhere to international standards. We can produce ductile iron to ASTM A47/A197 and EN 1562, or ductile iron to ASTM A536/EN 1563. Please specify standard in your request.