XQV DHS15 Live End Low Retracting Round Anchorage – Low-Retraction High-Efficiency Prestressing Anchor

Compact Live End Anchor with 1-3mm Retraction Volume – Minimizes Prestress Loss for Bridge & Infrastructure Projects

Product Introduction

The low retracting anchor is a kind of low retracting and high efficiency prestressing anchor which is specially researched and developed to solve the large effective and permanent prestressing loss caused by the excessive tension and release of prestressing tendon anchor. Each set of road low retracting anchor is composed of anchor plate, nut, clip, subplate of anchor and spiral reinforcement. Compared with ordinary anchors (retraction volume 5-8mm or higher, stress loss 10%-20%), the XQV DHS15 series achieves retraction volume of only 1-3mm and stress loss of 3%-5%, significantly improving prestressing efficiency. Suitable for strand lengths ≤20m.

Key Features & Advantages

📉 Low Retraction Volume: Only 1-3mm vs. ordinary anchors 5-8mm – minimizes permanent prestress loss.

⚡ High Anchorage Efficiency: Reduces stress loss to 3%-5% compared to 10%-20% in ordinary anchors.

🔧 Complete Assembly: Composed of anchor plate, nut, clip, subplate, and spiral reinforcement.

📏 Ideal for Short Strands: Recommended for strand lengths ≤20m, common in bridge diaphragms and tie beams.

🛣️ Road Specification: Designed according to highway prestressing requirements.

🏗️ Durable Construction: High-strength materials with corrosion protection for long service life.

Technical Parameter – DHS15 Low Retracting Tensioning End Anchor (Road)

Model	Anchor Plate ΦA×B (mm)	Corrugated Pipe ID ΦD (mm)	Working Anchor Head M / C (mm)	Nut ΦF / E (mm)	Spiral Reinforcement ΦG×ΦH×I×N (mm)
DHS15-1	80×80×10	–	M43 / 45	Φ62 / 30	Φ80×Φ6.5×40×4
DHS15-2	Φ149×116	45	M85 / 50	Φ108 / 30	Φ115×Φ6.5×50×4
DHS15-3	Φ149×116	50	M85 / 50	Φ108 / 30	Φ130×Φ6.5×50×4
DHS15-4	Φ164×130	55	M95 / 50	Φ125 / 30	Φ140×Φ8×50×4

Performance Comparison

Parameter	Ordinary Anchors	XQV DHS15 Series
Retraction Volume	5-8mm (or higher)	1-3mm
Stress Loss	10%-20%	3%-5%

* Recommended for strand lengths ≤20m. Data for reference only; custom sizes available upon request.

Parts Specification

Component Name	Specification	Materials	Surface Treatment	PKG Method	Standard
Anchor Head	–	40Cr	Corrosion Protection	cardboard box or wooden case	GB/T14370-2015, JT/T329-2010, TB/T3193, ISO, CE, ASTM, BS…
Connector	–	40Cr
Bearing Plate	–	ZG270-500
Spiral Reinforcement	–	HRB400
Nut	–	40Cr

Prestressing Concrete Rebar (Finish Rolled Rebar)

Parameter	Specification
Diameter	18mm, 20mm, 25mm, 32mm, 36mm
Length	9m, 12m (custom available)
Yield Strength Grades	PSB500, PSB785, PSB830, PSB930, PSB1080
Material	HRB400

The rebar for prestressing concrete, also known as finish rolled rebar, is a straight steel bar with large diameter, super-high strength, and high dimensional precision. The outer screw with equal-height rib is rolled onto the bar surface. It mainly serves for connection and anchoring in prestressed concrete structures. The profile and dimensions comply with the stipulations of traffic authorities, road planning, and design institutions for prestressing high-strength finish rolled rebar. Its characteristic profile is the equal-height rib. Custom bar lengths, fixed bundle quantities, small-package options, and minus-deviation weight delivery are available upon customer agreement.

* Custom specifications and packaging available upon request.

Application

The XQV DHS15 Low Retracting Round Anchorage is specifically designed for post-tensioning applications where minimizing prestress loss is critical. With retraction volume of only 1-3mm and stress loss of 3%-5%, it significantly outperforms ordinary anchors (5-8mm retraction, 10%-20% stress loss). Typical applications include:

Bridge Diaphragms & Cross Beams: Used in post-tensioned diaphragms of box girder and segmental bridges. The low retraction ensures high effective prestress remains in short tendons (≤20m).

Tie Beams & Connection Beams: Applied in tie beams of arch bridges and connection beams of composite structures. Reduces permanent prestress loss that commonly occurs in short, heavily tensioned members.

Bridge Retrofit & Strengthening: Used for external post-tensioning in bridge strengthening projects where precise tension control and minimal retraction are required to achieve design stress.

Structural Repair Works: Applied in prestressed concrete repair for beams, slabs, and columns. The compact anchor head fits into existing structures with limited space.

Precast Concrete Elements: Used in precast beams, lintels, and piles where short strands are common. Low retraction improves product quality consistency.

Railway Sleepers (Prestressed Concrete Ties): Anchors prestressing strands in railway sleepers. The reduced stress loss ensures long-term pre-compression under dynamic train loads.

Special Short-Tendon Applications: Suitable for any post-tensioned member where tendon length ≤20m, including wind tower foundations, ground anchors, and foundation pit supports.

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.