Expansion Anchor Bolts
For secure, heavy-duty load anchoring in concrete, solid brick, and masonry structures, our Expansion anchor bolts provide the ultimate pull-out strength and mechanical security. Designed with a high-performance expansion sleeve that flares outward when the bolt is tightened, these anchors grip the concrete borehole wall with intense friction, establishing a reliable permanent connection for structural steel columns, heavy-duty industrial machinery, and outdoor photovoltaic mounting tracks.
For secure, heavy-duty load anchoring in concrete, solid brick, and masonry structures, our Expansion anchor bolts provide the ultimate pull-out strength and mechanical security. Designed with a high-performance expansion sleeve that flares outward when the bolt is tightened, these anchors grip the concrete borehole wall with intense friction, establishing a reliable permanent connection for structural steel columns, heavy-duty industrial machinery, and outdoor photovoltaic mounting tracks. We manufacture our Expansion anchor bolts from high-strength carbon steel and stainless steel, ensuring excellent shear resistance and structural integrity under dynamic wind and vibration loads. Our automated cold heading and sleeve forming lines ensure that every sleeve expands uniformly, eliminating installation failures and improving overall job-site safety for contractors and project owners alike.
As an established leader in the fastening field with a 20-year manufacturing history, Shanghai Megood Metal Products Co., Ltd. is dedicated to supplying superior anchoring products to international engineering firms and industrial distributors. Our 2,200-square-meter facility is IATF 16949:2016 certified, operating dozens of high-speed automatic heading, threading, and stamping machines. We maintain a zero-compromise approach to quality control, subjecting our Expansion anchor bolts to rigorous pull-out tests, shear-force evaluations, and accelerated corrosion chamber testing. Our manufacturing processes strictly comply with local environmental regulations, using eco-friendly plating chemistry that protects against rust without compromising safety. By working directly with us, you benefit from direct factory pricing, reliable delivery timelines, and access to a highly competent R&D team that can design custom anchoring solutions to meet your unique architectural or structural blueprints.
Product Parameters
| Material | Carbon Steel (Grade 4.8, 5.8, 8.8), Stainless Steel (SUS304, SUS316) |
| Size Range | M5 to M20 |
| Surface Treatment | Yellow Zinc Plating, White Trivalent Zinc Plating, Cleaning/Passivation |
| Anchor Type | Wedge Anchor, Sleeve Anchor, or Bolt-style Expansion Anchor |
| Sleeve Style | Full-Length Stamped Expansion Sleeve |
| Thread Type | Metric Coarse Thread |
Product Applications
Solar Photovoltaic Installations
Ground-mounted solar array bases, concrete ballast foundations, and tracker anchoring.
Server Cabinets & Heavy Machinery
Anchoring power generator sets, industrial lathe bases, and massive server enclosures to concrete floors.
Vehicle & Garage Infrastructure
Hydraulic car lifts, heavy storage racks, and overhead crane rails.
Infrastructure & Building Construction
Structural steel columns, heavy HVAC duct brackets, security fencing, and stadium seating.
Customization Capabilities
We support comprehensive OEM and ODM services for custom Expansion anchor bolts, including custom sleeve lengths, double-expansion configurations, extra-long thread profiles, and specialized washer sizes. Custom tooling and sample development are completed within 30 days. Standard off-the-shelf wedge or sleeve anchor samples are provided completely free of charge. Our minimum order quantity (MOQ) for cold-headed expansion anchors is 50,000 units, while custom machined variations are quoted based on dimension.
Packaging & Shipping
Products are carefully sorted and packed in thick plastic bags to prevent component separation, then placed inside reinforced corrugated boxes. These boxes are securely loaded onto export wooden pallets, shrink-wrapped, and bound with heavy strapping. We support flexible shipping terms, primarily EXW and FOB Shanghai, accepting USD payments via international telegraphic transfers.
Why Our R&D and Fast Delivery Help You
We have our own R&D team. You can share your special needs. We will help solve your technical problems. Free samples are ready for stock items. Mass production takes 2-3 weeks for standard parts. Custom products take 4 weeks. Repeat orders are even faster. The elongation rate for 65MN is ≥10%. So the washer will not crack during installation. It works with regular bolts, high-strength bolts, and stainless steel bolts. You do not need to change your tools.
The entire product line is fully customizable.
FAQ
Q: How do you prevent the expansion sleeve from slipping during installation?
A: Our expansion sleeves are designed with specialized anti-rotation ribs and a precise taper angle on the bolt cone. This guarantees that the sleeve bites immediately into the masonry as torque is applied, preventing free spinning in the borehole.
Q: What are your standard delivery times for custom anchoring products?
A: Customized anchoring bolts requiring specialized sleeve dimensions or custom thread lengths have a standard production lead time of 4 weeks from technical drawing approval.
Q: Do you accept third-party inspections before the goods are loaded for export?
A: Yes, we welcome third-party inspectors (such as SGS, Intertek, or customer-appointed quality representatives) to conduct full pre-shipment inspections at our Shanghai facility to ensure compliance with your strict quality standards.
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