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TESTING OF CHAINS, WIRE ROPES, SLINGS & ACCESSORIES

We have installed since November 2013 in our main facility in Constanta, the first test bed in Romania with a maximum load test capacity of 300 tons-force and a maximum usable length of 12 meters.

With this test bed we can perform, as per customer request, destructive or non-destructive mechanical tests of load chains, mooring ropes, webbing slings, industrial magnets and also for for any other wire rope and chain accessories (hooks, shackles, sockets, etc.).

mechanical testing certificate sampleAfter the testing procedure is completed it is followed by the issuing of a Testing Certificate, which will contain all the data required by the employed method such as: certificate issuer, the customer's name, the performed testing type, the applied load, the elongation of the tested item, preset breaking test value and actual breaking load, the testing chart and the test results.

This service provided by us enables the customer to test both new and old products. If the tested products have an expired certificate, after passing the testing procedure, the operator in charge of the supervision and technical inspection of these equipments can safely issue a new technical bulletin for the tested products, thus getting a prolonged lifespan for those products with minimum costs, in a easy and 100% safe way.

The main advantage for the customer is testing of both newer and older products.

Important: For all lifting accessories with finished warranty, after testing, it is possible for the technician in charge, based on results, to extend service life, in a safe manner, fast and cheap!

The destructive tests can be performed on the following products:

  • wire ropes up to 65mm in diameter (tensile strength class 1960N/mm2);
  • wire ropes up to 68mm in diameter (tensile strength class 1770N/mm2);
  • grade 80 chains with link size up to 48mm;
  • webbing slings with maximum work load of 300t;
  • mooring ropes with work load of 300t.


Non destructive tests are made for:

  • wire ropes up to 102mm diameter;
  • grade 80 chains with link size up to 68mm diameter;
  • webbing slings with maximum work load of 150t;
  • mooring ropes with maximum work load of 150t.

Our mechanical testing laboratory is accredited by Romanian Naval Authority. (ANR) since 2015.

The proof load test is the most common type of test required by our customers. The target load is set by entering the working load limit (W.L.L. / S.W.L.) and by choosing a multiplying (design) factor. We are usually performing these kind of tests with a design factor of 2 times the rated W.L.L, in accordance with ASME B30.9 standard specs, but is possible to use different design factors.
At customer request, testing can be performed either to the breaking point of the tested item or the item can be released after reaching the target load.

mechanical testing
The breaking test mode will push the tested item to destruction at the desired speed, set by PROlift's operator. Results will be compared with theoretical limits or manufacturers certificates.

The cyclic test parameters include test speed, upper load limit, upper load hold time, lower load limit, lower load hold time and number of cycles. This method is very useful to simulate real life scenarios and the behaviour of lifting sets on different load values.

The hold test setting allow the operator to set the target load (holding load) and how long the tested item should be held at the desired load value. This method is useful to check fatigue.

The testing certificate states in an explicit and easy to read manner all data related to the test performed.

LIFTING EQUIPMENTS INSTALLATION, MAINTENANCE, REPAIR AND OVERHAUL

Our company has been authorised by I.S.C.I.R. (State Inspection for Controlling Boilers, Pressure Vessels and Lifting Equipment) to perform the following services:

  • installation, repairing, maintenance and overhauling of moving cranes:
  • • with rails, with a SWL ≤ 1000t;
    • without rails, with a SWL ≤ 1000t;
    • boom and/or rotating platform cranes, both fixed and moving on rails, with a SWL ≤ 500t;
  • repairing, maintenance and overhaul of lifting equipment with a SWL ≤ 500t;
  • repairing, maintenance and overhaul of self propelled forklifts with a SWL ≤ 50t.

repairing and overhauling for lifting equipments

Related authorizations on Certifications page.



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WIRE ROPE TERMINATIONS (SOCKETS) FITING

Beside the classic wire ropes end connections (eye formed with wire rope clips, braided or swaged) there are various other ropes end connections such as sockets. Terminating a wire rope with this kind of end connections can be achieved by using:

  • a swaging machine;
  • inner socket wedges;
  • synthetic resin.

swaging a terminationThe wire rope end connections that are fitted using a swaging machine are characterised by a sleeve which is slid onto the wire rope's end and it is fitted to the wire rope using a swaging machine. The swaged socket is mainly used for small diameters wire ropes.

The wire rope end connections that are mounted using inner wedges can easily be fitted on site. By using a wedge the wire rope's end is jammed into a tapered socket. As the load increases, the wedge is pulled deeper into the socket and it exercises normal clamping force on the rope. The loose end of the wire rope is then secured with a wire clip. The use of this kind of socket is highly popular as an end connection for the hoisting ropes on mobile cranes.

The wire rope end connections that are fitted using synthetic resin are very reliable and efficient wire rope end connections. In a pull test they achieve the highest breaking loads compared to other terminations and furthermore, tension-tension fatigue endurance is excellent.

They are used extensively in applications which require the end connections to withstand high, continuous tension-tension stresses, as it is the case with the suspension ropes of the crane boom (ship mounted winches, bridges).

WIRE ROPES SWAGING, SPLICING AND TAPERING

We are operating the largest hydraulic swaging machine for mechanically spliced wire ropes in the South East of Europe, with a maximum capacity of 2000 tons-force and also two hydraulic swaging machines with a maximum capacity of 300 tf.

By using these machines we can manufacture wire rope slings with special terminations (swaged sockets) or eyes at both ends, with or without thimbles, by swaging with cylindrical or conical aluminium or steel sleeves (Flemish Eye method), for any wire rope diameters starting with 3mm (0.01 inches) diameter and up to 102mm (4 inches), in compliance with the latest European standards in our field of expertise.

The main feature of conical steel ferrules is that they allow the plaiting of the wire rope eye and swaging under the sleeve, to prevent the wire ends from becoming disheveled.
By using this type of ferrules we can manufacture Flemish Eye wire rope slings that have approx. 25% higher working load limits for the same type wires than compared to slings manufactured using the aluminium sleeves.

We also provide annealed / tapered wire ropes.

splicing and swaging of steel wire ropes
Wire rope slings manufactured by PROlift have ANR (Romanian Naval Authority Authorisation) and European Machinery Directive CE type Approval.