Ningyuan Fastener
Ningyuan Fastener
Explore our heavy-duty industrial fasteners line, precision-engineered at our advanced Yongnian facility.
Double sided screws—often referred to in heavy engineering as dowel screws, dual-threaded fasteners, or hanger bolts—play a pivotal role in modern structural joinery, machinery placement, and renewable energy racking assemblies. Unlike traditional single-headed bolts, double sided screws feature threads on both ends, allowing them to join two substrates seamlessly without an exposed bolt head.
As global industries scale their structural requirements under increasingly rigorous regulatory protocols, the procurement of double sided screws has evolved. Project managers no longer just seek a vendor; they demand reliable exporters with verified testing facilities, metallurgical validation, and high-volume, rapid-delivery capabilities. Handan Ningyuan Fastener Manufacturing Co., Ltd. sits at the intersection of this global industrial demand, bringing decades of expert metallurgy and structural innovation to the world stage.
Navigating the complex landscape of industrial infrastructure requirements across global trade zones.
With rising global volatility, large-scale engineering endeavors require consistent procurement cycles. As a leading manufacturer based in Yongnian (China's Fastener Capital), Ningyuan ensures high industrial redundancy, minimizing lead times via direct rail-and-port access.
Offshore wind, marine logistics, and solar installations demand fasteners that resist aggressive oxidation. Our hot-dip galvanizing lines and specialized anti-corrosive treatments are designed to withstand up to 1000+ hours of salt-spray testing.
Industrial components must pass stringent safety criteria before structural deployment. Ningyuan holds ISO9001 quality systems certification, RoHS EU compliance, GB/T30512 testing, and 2000/53/EC ELV automotive-grade compliance.
Handan Ningyuan Fastener Manufacturing Co., Ltd. (formerly known as Jin Langtao), established in 2005, operates a massive 20,000 square meter factory in the heart of Yongnian, Handan. Yongnian is celebrated globally as the epicenter of fastener production. Over our 18+ years of growth, we have expanded our capacity to generate an annual sales volume exceeding 70 million yuan, relying on over 50 advanced cold heading, thread rolling, and finishing machines.
Our structure houses dedicated Research & Development units, precision manufacturing floors, and strict quality control teams. This integrated model supports standard high-end fastener components along with custom-designed OEM projects. We cater directly to large-scale sectors, including:
How double sided screws and related components serve as structural lifelines across core sectors.
Solar brackets require reliable anchoring to cope with upward wind load stresses. Double sided screws provide a rigid link, anchoring structural steel C-channels and U-shaped elements directly into ground-screws or concrete support pillars without compromising structure seal integrity.
In high-seismic regions, buildings require flexible yet robust bracing. Our seismic brackets and double-ended structural studs absorb multidirectional shear stress, ensuring pipes, ductwork, and electrical conduits remain securely anchored during seismic events.
In modular precast building methods, dual-thread fasteners bridge structural concrete panels with external insulation layers or timber subframes. Precise thread engagement on each end ensures high pull-out resistance and minimal thermal bridging.
Aligning manufacturing processes with international regulatory frameworks for seamless import clearance.
Exporting fasteners successfully on a global scale requires detailed compliance with localized building standards. Handan Ningyuan ensures that structural items, like concrete expansion bolts, steel beam clamps, and double sided screws, strictly comply with the necessary localized certification protocols:
Ningyuan offers full material traceability reports (MTRs), mill test certifications, and chemical analysis profiles for every export shipment, providing confidence to project engineers and purchasing departments worldwide.
Representing real-world applications where our structural products deliver robust engineering performance.
Verification of international processing standards and metallurgy inspections.
Driving innovations to address structural demands in smart infrastructure projects.
We are modifying thread profiles to allow high-speed robotic assembly arms on solar installation sites to drive fasteners quickly, lowering labor costs and installation timelines.
Our R&D team is evaluating high-entropy alloy blends to create next-generation double-ended screws that provide double the tensile capacity of grade 10.9 steel without hydrogen embrittlement risks.
Developing integrated sensor washers and smart tension-indicating coatings that provide visual changes under load drift, simplifying checks in bridges and industrial buildings.
Browse our complete catalog of industrial structural components and custom anchoring assemblies.
Technical guidance and purchasing support regarding double sided screws and related industrial assemblies.
A double sided screw features threads on both ends, but is designed for different substrates. A hanger bolt features wood/lag threads on one side and machine threads on the other. A dowel screw features self-tapping threads on both ends. This allows engineers to anchor steel structural components or threaded nuts to raw timber, masonry, or concrete foundation bases without using exposed hex head designs.
We apply Hot-Dip Galvanizing (HDG) to ASTM A153 specifications for outdoor solar arrays and industrial structures, creating a zinc iron alloy layer. For precise tolerance demands, we utilize zinc flake coatings, electro-zinc platings, and Dacromet coatings. These treatments provide lasting protection against rust and corrosion, even in coastal areas.
Ningyuan operates under ISO 9001:2015 quality control systems. Our products comply with RoHS directives for environmental compliance, GB/T30512 standards for automotive and equipment assembly, and 2000/53/EC ELV directives. We inspect material batches on-site for carbon footprint, yield, and shear limits.
Yes. With more than 50 advanced cold heading and thread-rolling machinery units, we support customization requests for diameter, thread pitch, length, and steel grades (from Grade 4.8 to high-tensile 8.8, 10.9, and 12.9 grades). Custom orders are coordinated by our technicians to align with structural engineering blue prints.
Lead times vary based on design complexity and volume. Standard sizing bolts and fasteners ship quickly from stock. Custom double sided screws requiring thermal treatment and specialized coating are processed through our 20,000 m² factory, ensuring reliable export scheduling to major global ports.
Are you sourcing double sided screws, seismic supports, or concrete expansion anchors? Contact Handan Ningyuan Fastener Manufacturing Co., Ltd. for pricing quotes, mill certificates, and free product samples.