Prestressed Thread Bar
High-strength threaded bar for prestressing and heavy formwork ties.
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1 / 3Tie Rods & Water Stop Rods
Prestressed Thread Bar
A high-strength threaded bar for prestressing applications and heavy formwork ties. Supplied in common prestressing steel grades with rolled threads for fatigue resistance.
Specifications
- High-strength threaded bar
- For prestressing and heavy ties
- Various diameters available
- Rolled threads
Engineering-reviewed quote within 24 hours.
Technical Specifications
| Material | 40Cr / PSB830 / PSB930 |
| Thread | Rolled |
| Surface | Black / zinc plated |
Material40Cr / PSB830 / PSB930
Surface FinishBlack · Zinc plated
Rated LoadInquire
Unit WeightInquire
PackagingBundled on pallet
Production Process
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06Material Grades Explained
| Grade | Notes |
|---|---|
| Q235 | Plain carbon steel. Economic option for light and medium formwork loads. Not heat treated. |
| 45# | Medium carbon steel. The standard formwork tie rod grade in China; quenchable to class 8.8. |
| 40Cr | Alloy steel. Higher hardenability and better fatigue performance than 45#; used where repeated reuse matters. |
| Class 10.9 bolt | Quenched and tempered alloy steel bolt used in the climbing cone set. Not electroplated without a documented baking cycle. |
| QT450-10 | Ductile (nodular) iron with 450 MPa tensile and 10% elongation. Used for sleeves and embedded plates where toughness and castability matter. |
| HRB400 | Hot-rolled ribbed bar (threaded steel) to Chinese standard. Used for embedded foot bolts; good bond with concrete. |
Applications
Procurement Guide
- Confirm load requirement
- Specify diameter and length
Procurement Information
- OEM / Custom
- Own drawing or label welcome
- MOQ
- Trial orders OK · mixed SKU welcome
- Lead time
- Stock 7-30d · Custom 20-35d
- Packaging
- Seaworthy: pallet + strapping + waterproof
- Payment
- T/T · L/C at sight
- Incoterms
- FOB Tianjin · CIF · CFR · EXW
Related Technical Reading
Related Products
Technical FAQ
Prestressed Thread Bar — Answers for Engineers and Buyers
A formwork tie rod is a high-strength threaded bar that, together with nuts, anchor plates and walers, holds formwork panels against the lateral pressure of fresh concrete. It passes through the wall section and is either fully recovered after stripping (through-tie used with a sleeve) or permanently embedded (lost-end / water-stop type).