China post tension prestressing jack

Applications and Features

♦ prestressing jack is a kind of general-purpose feed-through jack for prestress applied for tension of various steel strand anchors.

♦ prestressing jack is widely used in post-tensioned large buildings and structures, prestressed concrete bridges, rock and earth anchoring construction, hydraulic structures, foundation anchoring construction and other great projects.

♦ Main parts of prestressing jack is made of high-strengthened steel and it features in compact structure, small weight and small size, short axial length and short length of preserved stretching steel strand, which can saving many steel strand materials.

♦ This prestressing jack also easy to hoist, durable in use, easy to operate and convenient to maintain.

Technical Performance

♦ prestressing jack is divided into many models, such as 100 ton, 150 ton, 200 ton, 250 ton, 300 ton and to 650 ton. Their strokes are all 200mm. Technical performance shows in table 1.

♦ Tool anchorage and restraining plate accessories will be used with stressing jack when tension.

Method of Application

1. Working anchor, jack and tool anchor shall be installed according to Fig. 2 before tensioning.

2. Feed oil to Circuit A (tensioning cylinder) of jack for tensioning. Adjust throttle valve of oil pump to control oil pressure and tensioning speed.

3. Clips of tool anchor will automatically clamp the strand when the piston stretches out. Clips of working anchor are retained by restraining plate and are taken out slightly and will not leave the working anchor.

Package

For every order, we will use strandard export package with wooden case. Of cousre, we can also packed as per customers' requirements.

Shipping

For sample, it will be delivered by airplane or by courier, such as DHL, TNT, FEDEX and so on.

For order, it will be delivered by airplane or by ship.

Overview of LQM company

LQM is one of the well known leading company in post tensioning systems supply and services in China. LQM post tensioning systems are developed with the features to meet application requirements which need simplicity, efficiency as well as cost competitiveness.