Prestressed Thread Bar

Name: Prestressed Thread Bar
Brand: Qianheng Fastener
Availability: InStock

High-strength threaded bar for prestressing and heavy formwork ties.

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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.

Характеристики

High-strength threaded bar
For prestressing and heavy ties
Various diameters available
Rolled threads

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Технические параметры

Material	40Cr / PSB830 / PSB930
Thread	Rolled
Surface	Black / zinc plated

Материал40Cr / PSB830 / PSB930

ПокрытиеBlack · Zinc plated

НагрузкаInquire

Вес единицыInquire

УпаковкаBundled on pallet

Производственный процесс

**Cutting & forming**Bar cutting, cold heading and plate forming to drawing dimensions.

**CNC thread rolling**Rolled threads for fatigue strength and consistent pitch diameter.

**Heat treatment**Quenching and tempering for class 8.8 and above, with process records.

**Surface treatment**Black oxide, zinc plating or hot-dip galvanizing to the specified thickness.

**Gauge & batch test**Thread gauging, hardness and tensile checks with batch test reports.

**Packing & marking**Set or BOM packing, VCI protection and seaworthy crates.

Расшифровка марок стали

Марка	Примечание
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.