XQV LD Heading Machine – Hydraulic Cold Heading Equipment for PC Strand & Wire

Reliable Heading Machine for Prestressed End Anchoring in Pretensioning Systems

Technical Parameters – LD Series

Model	Max. Heading Force (kN)	Rated Oil Pressure (MPa)	Applicable Bar Strength (MPa)	Bar Diameter Able to Head (mm)	Heading Piston Stroke (mm)	Clamping Piston Stroke (mm)	Weight (kg)	Dimension (mm)
LD-10	88.2	39	1470‑1770	Φ4, Φ5, Φ6	6	12	10	Φ9×279×199
LD-20	165	43	1470‑1770	Φ7	7.5	20	15	Φ120×300×249

Product Description

The XQV LD heading machine is a specialized hydraulic equipment for prestressed concrete components. It is used to upset the ends of steel bars or wires, forming upset heads that allow prestressing tendons to be anchored through anchor plates. Based on cold upsetting forming technology, the machine applies instantaneous high pressure to the bar ends through hydraulic transmission, causing local plastic deformation and upsetting. The built‑in mold ensures regular shape of the upset heads, meeting stringent anchoring requirements. Without heating, the process relies entirely on plastic deformation, avoiding any adverse effect on the mechanical properties of the steel.

Applications

The prestressed heading machine is widely used in pre‑tensioned and post‑tensioned construction projects. Key applications include:

Bridge & Building Construction: Anchoring prestressing tendons in precast components (crane beams, roof trusses, floor slabs) and small to medium‑span bridges (simply supported or continuous beams).
Geotechnical Engineering: Upsetting ends of rock bolts / cables for slope support, tunnel reinforcement and coal mine roadway support.
Water Conservancy & Other Fields: Anchoring precast components such as dams and aqueducts, as well as anchoring steel bars in railway sleepers to enhance fatigue resistance.

Parts List – Heading Machine Structure

1. Oil nozzle
2. Plug
3. Housing
4. Priority valve body
5. Heading piston
6. Clamping piston
7. Return spring of clamping piston
8. Handle
9. Return spring of heading piston
10. Spring shim
11. Large spring seat
12. Check ring
13. Heading wedge
14. Conical shell
15. Wedge return spring seat
16. Conical shell cover
17. Clamping piece return spring
18. Heading clamping piece return spring
19. Heading mould

Workshop

Our Manufacturing Base – Liuzhou Xuanqiao Prestressed Machinery Co., Ltd.

Located in Liuzhou, Guangxi – a key industrial hub for prestressed technology – our modern workshop covers over 10,000㎡. We operate CNC machining centers, automated assembly lines, and precision testing equipment to ensure consistent quality.

Every batch of raw material is inspected, and finished products (anchors, jacks, pumps, ducts) are tested in our in‑house laboratory for mechanical performance and pressure resistance. We are certified under ISO 9001:2015 and comply with FIP international standards.

Annual capacity: 6 million anchor holes and 1,000+ sets of hydraulic equipment. Our experienced technicians and engineers follow strict SOPs to guarantee reliability.

We maintain sufficient raw material inventory and finished goods for fast delivery. Continuous investment in equipment and training keeps us at the forefront of prestressed manufacturing – because a strong factory means reliable products and long‑term trust.