Full Thread Bolt Price | Tie Rod for Concrete Formwork | Manufacturer
Full Thread Bolt Price | Current Price List & Quick Quote
Full thread bolt price for connecting concrete form panels - Direct manufacturer with best quality and shipping across Iran. Contact us for current pricing:
| Type | Diameter (mm) | Length (m) | Coating | Unit | Price |
|---|---|---|---|---|---|
| Full Thread Bolt | 16 | 1 | Oiled | Pcs | Contact for price |
| 1.5 | Oiled | Pcs | Contact for price | ||
| 2 | Galvanized | Pcs | Contact for price | ||
| 3 | Galvanized | Pcs | Contact for price | ||
| Full Thread Bolt | 20 | 1 | Oiled | Pcs | Contact for price |
| 1.5 | Galvanized | Pcs | Contact for price | ||
| 2 | Galvanized | Pcs | Contact for price | ||
| 3 | Galvanized | Pcs | Contact for price | ||
| Full Thread Bolt | 22 | 1 | Galvanized | Pcs | Contact for price |
| 1.5 | Galvanized | Pcs | Contact for price | ||
| 2 | Galvanized | Pcs | Contact for price | ||
| 3 | Galvanized | Pcs | Contact for price |
What is a Full Thread Bolt? | Complete Guide
Full thread bolt, also known as Tie Rod, Threaded Rod, or Double-End Threaded Bolt, is one of the most essential formwork accessories in the construction industry. This product is a steel rod threaded along its entire length, providing secure connection between two opposing formwork panels.
Full thread bolt price varies depending on factors such as diameter, length, steel type, and surface coating. This page provides all the information you need to select and purchase the right full thread bolt for your project.
🔧 Quick Connection
Full-length thread allows precise adjustment and easy nut connection at any point along the rod.
💪 High Strength
Tensile load capacity of 90 to 260 kN depending on diameter and steel grade.
🔄 Reusable
With proper care, can be used in multiple projects, reducing overall costs.
Types of Full Thread Bolts | Which is Right for Your Project?
| Type | Diameter | Main Application | Coating | Tensile Strength |
|---|---|---|---|---|
| 16mm Bolt | M16 | Residential structures, standard walls, light foundations | Oiled / Galvanized | 90-120 kN |
| 20mm Bolt | M20 | Shear walls, medium foundations, parking structures | Galvanized | 140-180 kN |
| 22mm Bolt | M22 | Large panel, tunnel form, heavy structures | Galvanized | 180-260 kN |
Full Thread Bolt Technical Specifications
Approximate Weight Table
| Diameter | 1m Length (kg) | 1.5m Length (kg) | 2m Length (kg) | 3m Length (kg) |
|---|---|---|---|---|
| M16 | 1.58 | 2.37 | 3.16 | 4.74 |
| M20 | 2.47 | 3.70 | 4.94 | 7.41 |
| M22 | 2.98 | 4.47 | 5.96 | 8.94 |
Standard Thread Dimensions
| Nominal Diameter | Thread Pitch (mm) | Pitch Diameter (mm) | Outer Diameter (mm) |
|---|---|---|---|
| M16 | 2.0 | 14.7 | 16.0 |
| M20 | 2.5 | 18.4 | 20.0 |
| M22 | 2.5 | 20.4 | 22.0 |
Full Thread Bolt Applications in Formwork
🏗️ Concrete Wall Formwork
The most common application of full thread bolts in concrete wall formwork. The bolt passes through one side of the form, exits the other side, and is secured with nuts and washers.
Note: For walls over 3 meters high, using higher diameter bolts (20 or 22) is recommended.
🏗️ Foundation Formwork
In strip and raft foundations, full thread bolts hold formwork against concrete pressure. Deep foundations require longer bolts.
Note: For wide foundations, using walers and supports is essential.
🏗️ Large Panel System
In large panel formwork systems with big dimensions, concrete pressure is very high and high-resistance bolts (22mm) are needed.
Note: In this system, 22mm galvanized bolts are usually used.
🏗️ Tunnel Form
For tunneling and underground structures that require high concrete pressure, high-quality full thread bolts are essential.
Note: In tunnels with large diameter, special systems like Butterfly Nut are used.
How to Install Full Thread Bolt | Step-by-Step Guide
Prepare Formwork
Place forms on both sides of the wall and align them. Create bolt passages at regular intervals (usually every 60-80 cm).
Install Protective Tube (if needed)
To prevent bolt from bonding to concrete, place a plastic or cardboard tube over the bolt so the middle section remains hidden in concrete.
Pass Bolt Through Form
Thread the full thread bolt through the hole on one side of the form and out through the opposite side. Exit length from each side should be at least 5 cm.
Install Nut and Washer
First place the washer (preferably cas washer or double-tube washer), then screw on the nut. Using a suitable wrench, tighten nuts symmetrically.
Check Alignment and Spacing
After initial tightening, check form alignment and make necessary adjustments if needed.
Concrete Pouring
Once confident that forms are secure, proceed with concrete pouring. Note: Use appropriate vibration to avoid excessive pressure on formwork.
Important Maintenance Tips to Extend Full Thread Bolt Life
To maximize utilization of full thread bolts and reduce project costs, following these tips is essential:
- Clean after each use: After form removal, clean concrete and mortar stuck to the bolt with a brush. This prevents rust and thread damage.
- Periodic lubrication: Every few uses, lubricate threads with special oil or grease. This reduces nut tightening difficulty.
- Store in dry warehouse: Keep bolts in a covered, dry location. Moisture causes rust and reduces useful life.
- Visual inspection before use: Before each project, check bolts for cracks, bends, and severe rust. Set aside damaged bolts.
- Use galvanized coating: For high-moisture projects or repeated use, choose galvanized bolts. Corrosion resistance is 3-4 times higher.
- Prevent impact: Avoid impact to bolts during transport and form removal. Impact can damage threads.
Comparison: Full Thread Bolt vs Other Formwork Connectors
| Feature | Full Thread Bolt | Through Bolt | Tie Band |
|---|---|---|---|
| Thread | Full length | Usually none | None |
| Length Adjustment | ✅ Yes | ❌ No | ❌ No |
| Reusability | ✅ High (50-100 cycles) | ⚠️ Medium (10-20 cycles) | ⚠️ Medium |
| Waterproofing | ⚠️ With accessories | ✅ Yes (water stop) | ⚠️ With accessories |
| Application | Versatile | Walls needing waterproofing | Foundation |
| Price | Medium | Medium-High | Low |
Related Products for Full Thread Bolt
The following accessories are needed for proper use of full thread bolts:
Frequently Asked Questions
How much does a full thread bolt cost and what factors affect the price?
Full thread bolt price depends on various factors:
- Diameter: 22mm bolt is more expensive than 16mm
- Length: Longer bolts cost more (per meter)
- Steel type: Grade 10.9 is more expensive than 4.6
- Coating: Galvanized is 30-50% more expensive than oiled
- Quantity: Bulk purchase gets discount
Contact us for exact pricing based on your project needs: +989121390683
What's the difference between full thread and regular (partial thread) bolts?
The main difference is thread location:
- Full thread bolt: Threaded from tip to end - allows length adjustment and nut placement at any point
- Partial thread bolt: Only threaded at both ends - limited adjustment
In formwork, full thread bolts are the industry standard because they allow precise adjustment of spacing between forms.
What type of coating is best for full thread bolts?
Coating choice depends on project conditions:
- Oiled (plain): Cheaper, suitable for short projects and dry conditions
- Galvanized: Rust-resistant, suitable for humid projects, coastal areas, or repeated use
- Epoxy: High chemical resistance, for special environments
Recommendation: If the project is in humid areas or the bolt is used multiple times, definitely choose galvanized.
How do I choose the right bolt length?
Simple formula:
Example: If each form is 5 cm thick and wall thickness is 30 cm:
Length = (5×2) + 30 + 10 = 50 cm → meaning 0.5 meters
⚠️ Always choose slightly longer for safety margin.
Are full thread bolts suitable for special structures like swimming pools?
Yes, but with specific considerations:
- Always use water stop through bolts
- To prevent rust, choose galvanized or epoxy-coated bolts
- After form removal, cut the outer part of the bolt and apply waterproof mastic
Alborz Ghaleb produces water stop through bolts specifically for pools and water tanks.
What is the standard spacing between bolts in wall formwork?
Spacing depends on wall height and concrete pressure:
- Walls up to 3 meters: Every 60-80 cm horizontal, every 80-100 cm vertical
- Walls 3-5 meters: Every 50-60 cm horizontal, every 60-80 cm vertical
- Walls above 5 meters: Every 40-50 cm horizontal, every 50-60 cm vertical
⚠️ These are approximate values. Consult a structural engineer for special projects.
Why does the bolt become tight after several uses and the nut won't open?
Common reasons and solutions:
- Rust: Threads rusted → Clean and lubricate
- Dried concrete: Concrete adhered to thread → Use wire brush
- Excessive pressure: Nut deformed under pressure → Use longer wrench
- Low quality: Irregular threads → Replace with quality bolt
Prevention: Clean and lubricate bolts after each use.
Free Consultation & Full Thread Bolt Price Quote
Direct manufacturer of full thread bolts with best quality and factory price
Shipping across Iran | Quality guarantee | Free expert consultation
Office: +98-26-3472-0146 | +98-26-3472-0147
Factory: Shamsabad Industrial Town, Karaj | Working Hours: 8 AM to 6 PM
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