A: It depends.If we have bulk goods in stock, we can ship goods within 3 days after the QC process. If we don’t have stock, normally it takes 7-15 days for OEM samples and 20-30 days for bulk goods. If it refers to opening the new mold, it takes an extra 7-15 days to make the mold.
Anchor Bolt
Anchor Bolts (Foundation Bolts): Overview
Material:
- Common materials:
- Carbon steel: Grade 8.8/10.9 (high tensile strength for structural loads).
- Stainless steel: 304/316 (corrosion resistance in marine or chemical environments).
- Galvanized steel: Hot-dip galvanized (HDG) or mechanically galvanized for outdoor/industrial use.
- Alloy steel: ASTM F1554 Grade 55/105 (for seismic or high-stress applications).
- Surface treatments: Epoxy coating, Dacromet®, or zinc-rich paint for enhanced corrosion protection.
Manufacturing Process:
- Cold Heading: Forms the bolt head (hex, L-shape, J-shape) and shank from steel rod.
- Thread Rolling: Cold-forming threads (metric/SAE) via dies to improve fatigue resistance.
- Bending (for L/J bolts): Precision bending of the embedded end using hydraulic tools.
- Heat Treatment: Quenching and tempering (for high-grade steel) to achieve hardness (HRC 22-35) and tensile strength.
- Surface Finishing: Hot-dip galvanizing, epoxy coating, or passivation (stainless steel).
Key Production Considerations:
- Thread accuracy: Ensures compatibility with nuts and load distribution.
- Bend consistency: Uniform angle and radius for L/J-shaped bolts to meet embedment standards.
- Coating adhesion: Critical for corrosion resistance in concrete or acidic environments.
- Straightness tolerance: ≤1mm per meter for long bolts to prevent misalignment during installation.
Applications:
- Construction: Securing steel columns, bridge piers, and building frameworks to concrete foundations.
- Heavy machinery: Anchoring presses, turbines, and generators in industrial plants.
- Energy infrastructure: Wind turbine bases, transmission towers, and nuclear facilities.
- Transportation: Rail track fastening, airport runway lighting, and highway signage.
- Marine: Dock bollards, offshore platforms, and coastal structures.
Installation:
- Template positioning: Use a template to align bolts in the concrete formwork.
- Embedment:
- Wet concrete method: Insert bolts into fresh concrete, adjust position before curing.
- Post-installed method: Drill holes into cured concrete, secure with epoxy adhesive.
- Alignment check: Verify bolt projection height and alignment using laser levels.
- Torque tightening: After concrete curing, tighten nuts to specified torque (e.g., 200–800 Nm for M24–M64 bolts).
- Grouting: Fill gaps around bolts with non-shrink grout for added stability.
Note:
- Corrosion protection: Use double-coated (HDG + epoxy) bolts in highly corrosive environments.
- Seismic design: Select ductile materials (e.g., ASTM F1554 Grade 55) for earthquake-prone areas.
- Inspection: Check for coating damage, thread integrity, and alignment before concrete pouring.
Ideal for civil engineers, contractors, and industrial planners requiring robust, code-compliant anchoring solutions for permanent structural installations.
Key Terms: Anchor Bolts, Foundation Bolts, ASTM F1554, Concrete Embedment, Seismic Anchors.
Character Count: Optimized for technical precision and clarity.
Frequently Asked Questions
A: Normally, we make a 30% deposit after Pl confirmation and a 70% balance before shipment. lf order amountis too small, we can also change to 100% deposit in order to save bank handling charge.
A: A pre-bulk sample check can solve this problem to the largest extent. We will arrange production according to the pre-bulk sample quality standard after your confirmation of the samples.
A: We are not only a trading company but also a manufacturer. Our factory mainly focuses on mold design and quality inspection. Our bulk production may come from the factories we have worked with for a long time, and they are all ISO9001 certified. Through this cooperation model, we can not only ensure product quality and service, but also satisfy the diversified product needs of customers, and the price is more advantageous.
A: Yes,we are very glad to offer you samples.
However the express courier cost from our company to your required address will be upon your account.
Usually we use DHL, UPS, FEDEX or EMS as the courier.
It will take 3-7 days to arrive many Europe countries and North America.
Which express courier we will use, it’s up to your convenient or the express charge.
A: No,just part of our capable categories have been showed in our site.
If you are looking for relative industrial products, please feel free to contact us.
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