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    What is prestressed concrete? How is it used? ... High span-to-depth ratios Larger spans possible with prestressing (bridges, buildings with large column-free spaces) ... Once the concrete is set then the steel wires are inserted through the tubes and then with help of hydraulic jack the steel wires are stretched and held in place with the help ...

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    Glossary of prestressed concrete terms - Wikipedia

    Glossary of prestressed concrete terms Jump to ... The active hydraulic cylinder of a stressing jack, being the cylinder that extends from the body of the jack as the tendon strain increases. ... or tendons able to be tensioned using a mono-strand jack.: 12 mono-strand jack A tensioning jack that applies force to a single tendon strand at a ...

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    Hydraulic Jacks, Hydraulic Jacking Equipment and Lifting

    Hydraulic Jacks, Pre-Stressing, Post-Tensioning and Lifting Systems. We provide jacking equipment, hydraulic jacks, torque wrenches, hydraulic pumps, hydraulic presses, aluminium jacks, staple guns,grout pumps, telescopic hydraulic cylinders, load skates, load moving skates, lifting systems, lifting slings, hydraulic winches, hydraulic jack stands, prestressing equipment and post …

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    The prestressing components need to by tested before leave factory and stressing equipment, especially for stressed jack and pump must be calibrated in factory or quality testing center.This can ...

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    Precast Solutions | CCLINT

    Prestressing equipment includes a full range of stressing pumps, jacks, grips, accessories and related services. Multi-Stressing Systems Spiroll multi-stressing and hydraulic detensioning systems can be designed and built to suit both new and existing precast factories.

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    Henan Prestressing Equipment Co., Limited, 河南省 郑州市. 385 likes · 7 talking about this · 1 was here. ... Much used widely in precast factory, buildings, bridges, etc. 6.High quality, machine can be used many years without any problems. ... Our YDT series lifting jack can be used in prestressed concrete, also can be used for Piling ...

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    Unbonded Post-Tensioning System (Mono-Strand PT System) ... Stressing is performed by using a hydraulic jack. During stressing, the readings of load and extension are recorded. ... Prestress Concrete Advantage; Prestressing minimises the effect of cracks in concrete elements by holding the concrete in compression.

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    1. Introduction The prestressing and precasting of concrete are inter-related features of the modern building industry. Through the application of imaginative design and quality control, they have, since the 1930’s, had an increasing impact on architectural and construction procedures.

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    For the construction of buildings, roads, bridges and all other construction related works different tools, machine and equipment are required by the labors and we offer an assortment of excellent grade Construction and Infrastructure Project Jacks.Our company has become a reliable manufacturing agency as our offered array of jacks are of superior quality and meets with application ...

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    System Description Monostrand Post-Tensioning System The strength, serviceability and design flexibility of concrete are greatly enhanced by the DYWIDAG Monostrand Post-Tensioning System.

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    Prestressing equipment Manufacturers & Suppliers, China

    Prestressed concrete anchor barrel and wedge are designed and manufactured under quality control program to meet international standards. ... In case of small size tendon unit such as type M405 the strands can also be stressed individually by means of mono jack.

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    Screw Jacks, Jack Posts, Lally Columns - Ellis Manufacturing

    concrete while you are building - often allowing the construction of something which might otherwise have ... tensioning create prestressed concrete. Pre-tensioned systems, however, must ... stressed utilising a hydraulic jack and then locked off at the anchorage.

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    Multi-Stressing Jacks Mono-Stressing Jacks Hydraulic Pumps Blockout Dimensions and Requirements ... buildings, tanks of liquefied gas LNG, silos, covertures, communication towers, nuclear power ... don with the tensioning operations carried out by hydraulic jacks.

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    Company Overview - Kaifeng Zhongqiao Prestressed Equipment

    We doesn't provide jacks prestressed products or service, please contact them directly and verify their companies info carefully. Total 404 products from jacks prestressed Manufactures & Suppliers Prestressed Horizontal Tensile Testing Machine 600KN Concrete Steel Strand Skew

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    the same high quality after-sales service as our jacks, ... providing a comprehensive drive unit for any jack. Pre-Tensioning Systems. 06/07 CCL ACCESSORIES LUBRICATION The correct lubrication of jack wedges is essential ... specializing in prestressed concrete …

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    Screw Jacks / Jack Posts / Lally Columns. ... The Ellis Bridge Jack / Modular Building Jack can support up to 80,000 pounds. It is the most rugged and durable screw jack Ellis offers. This screw jack comes standard in 4 sizes, see below for details. ... The Ellis Hydraulic Bottle Jacks are a great complement to the Ellis Screw Jacks and Steel ...

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    Post-tensioning is simply a method of producing prestressed concrete, masonry, and other structural elements. ... As a building material, concrete is very strong in compression but relatively weak in tension. Steel is very strong in tension. ... also known as the stressing operation, is achieved by using a hydraulic jack. At least one end of ...

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    The basic information about Kaifeng Zhongqiao Prestressed Equipment Co., Ltd. .com. Sourcing Solutions ; ... Kaifeng Zhongqiao Prestressed Equipment Co., Ltd. Trade Assurance. China (Mainland) | Manufacturer, ... Prestressing Mono-strand Hydraulic Jack for …

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    INSTALLATION SPECIFICATION FOR DRIVEN PILES PDCA Specification 103-07 PDCA Approved August 2007 PDCA Technical Committee Pile Driving Contractors Association

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