left: Installing the boom hoist and hoisting wires on a 1200 ton offshore crane 4 x 1900m 44mm and 1 x 800m 36mm non-spin. right: Installing a 90mm non-spin rope in a 450 ton offshore crane. Based in the Netherlands, De Ruiter Staalkabel is the continental arm of USHA-MARTIN of India, one of the world s biggest wire rope manufacturers. Our ISO 9001 certified company has more than 35 years of experience in the field of wire rope and hoisting applications and carries a stock of more than 1000 tons of wire rope. We serve numerous global offshore-related players including National Oil Varco, Jumboshipping, Huisman cranes, Allseas, SBM, Mammoet, BosKalis Dredging, Heerema, Smit salvage, Hartmann offshore and many others. Wire ropes - high-tech wire ropes - hoisting equipment AlwAys 1000 tonne wire Rope on stock crane ropes dia 6-100 mm Global rigging services & reeling equipment special assemblies Ringersstraat 7 3364 Ba Sliedrecht the netherlands cap untill 150 ton phone +31 (0)184 49 99 99 Fax: +31 (0)184 41 83 51 E-mail: info@drstk.nl www.drstk.nl Distributor of: Tréfileurope
With major resources within a demanding sector, we offer complete solutions tailored to individual needs. Our extensive services and deliveries comprise: High-tech crane ropes in non-spin 8mm 92mm. Anchor and towing lines in steel wire ropes up to 125mm. Boom pendants for various cranes. Special wire ropes for the dredging industry. Wire rope slings up to 152mm. Spooling jobs on the site. Rental of spooling and tensioning machines up to 250 ton capacity. Inspection and testing of lifting gear. On-board load testing of cranes. Life boat inspection and testing. Delivery of crane blocks, sheaves, shackles and spreaders.
above and left: Spooling of a 5000m 50mm on a 900 ton crane of Jumbo Offshore. right: The installation of a socket on a 77mm wire rope. De Ruiter Staalkabel is only one of several USHA MARTIN branches worldwide. Other USHA MARTIN subsidiaries are located in: Kolkata, Ranchi, Thailand, Singapore, Indonesia, Vietnam, Australia, Aberdeen, Worksop, Glasgow, Dubai, Houston and Johannesburg. above: The production of 90mm hoisting slings.
Installing wire ropes in multi-layer systems requires extra attention due to the risk of a bad spooling when approaching the maximum line pull of the winch. Hoist systems often work in 8 or more layers on the drum. With safety factors of 3, ropes need to resist extreme tension and will therefore tend to get pulled in the layer beyond during the load test of the crane. Severe rope damage will be the result. This can be avoided by spooling on the rope at a pretension of approximately 5% of the ropes MBL. Large diameter ropes would so require a tension of over 20 tons which cannot be realized by merely a spooler. De Ruiter Staalkabel has a unique tensioner that can generate a maximum constant tensioning of 40 tons. De Ruiter s vision is to be an all-round and reliable partner for crane-using enterprises operating across the world. By focusing on availability and quality at all levels, we make sure to satisfy our customers requirements and expectations regarding all products and services. Solid financial and technical resources help secure our position as the vendor of the future for traditional and high-tech wire ropes and related services to customers of all categories.
Ringersstraat 7 3364 BA Sliedrecht The Netherlands P.O. Box 66 3360 AB Sliedrecht The Netherlands Tel: +31 (0)184 49 99 99 Fax: +31 (0)184 41 83 51 E-mail: info@drstk.nl www.drstk.nl Kraan Repair is het juiste adres als u wilt weten hoe u uw kraan het beste in bedrijf houdt. Wij zijn gespecialiseerd in reparatie en onderhoud van bijna alle typen kranen en hijswerktuigen. Daarnaast kunt u bij ons terecht voor deskundig advies, inspectie, keuring, ombouw en modernisering, koop en verkoop. Omdat we bij Kraan Repair weten hoe belangrijk hijsmaterieel is, reageren wij snel op uw verzoek. Bij ons geen getreuzel of lange communicatielijnen, maar onmiddellijke hulp als de nood aan de man komt. J.S. Kraan Repair B.V. - Grotenoord 6-3341 LT HENDRIK-IDO-AMBACHT - Tel: (078) 681 55 61 - www.kraan-repair.nl VAN BEEST B.V. Manufacturer and Supplier of wire rope- and chain fittings. Registered trade marks Green Pin and Excel Tel. : +31 184 41 33 00 E-mail: sales@vanbeest.com www.vanbeest.com BEES_11166_ADV_GP_EXCEL_aanpassen_DEF.indd 1 25-05-11 16:46