TPT January 2011

S traightening & F inishing

Pipework fabrication tools and equipment

PIPE Ltd is a manufacturer and supplier of specialist pipework fabrication tools and handling equipment for workshop or on-site environments. The company’s range of portable precision pipe preparation/ bevelling machines and portable pipe cutting equipment is used in industries including chemical, oil, gas and power generation. The company also supplies an extensive range of pipestands, pipe handling, rapid pipe welding alignment clamps and spider internal alignment clamps used for set-up in all types of pipework fabrication. PIPE Ltd manufactures various models of ID locking pipe bevelling machines ranging from ½" to 20" ID, along with various models ASMAG, Austria, a supplier to the steel and non-ferrous metals industry, has developed a new multi-roll straightening machine for steel tubes for Wiederholt GmbH, Germany. The 10-roll-straightener – branded type RRM-pro 125/420/10 – works up to a maximum tube outside diameter of 125mm, at a line speed of 180m/min. To achieve the best accuracy in straightness, a new drive system was developed to reduce the roller centre distances to a minimum. The individual high efficiency AC servomotors enable roll wear compensation and high dynamic process control. A further feature of the machine is the identical design of the vertical and angular adjustment of all ten rollers. In association with additional adjustments on the inlet and outlet troughs, the first and fifth pairs of rollers can be fully integrated into the

of OD mounted split frame clamshell pipe cutting and bevelling machines ranging from 1" to 60" diameter pipe. The bevelling and cutting machines in PIPE Ltd’s range are capable of producing all of the standard weld preparations required, ie V-preps, J-preps and borematching on mild steel, stainless steel, duplex, super duplex and Inconel wrapped pipes. PIPE Ltd also manufactures a range of pipe clamps, both ID and OD mounted, with models dedicated to reforming pipe to get the perfect alignment. The company has been supplying equipment for the purging of stainless steel pipe for many years, and has recently tube bending/ovalisation process. The centreline of the machine can be changed. The vertical adjustment of each roller is performed by hydraulic cylinders controlled by servo valves; each roller is limited in load by limiting the pressure in the hydraulic cylinder. Together with direct measuring by absolute encoders, clearances in the system are eliminated. With the new ‘Realtime Setting’ straightening mode, adjustments are not restricted to the time period before and after a cycle. This mode has already been proven on the ASMAG 2-roll-bar straightening machines, and allows adjustments during the straightening process in real time. The mode also enables different settings for tube rear end, front end and the remaining tube, if necessary. For this purpose the drives of the high dynamic controlled vertical and angular adjustments of the rollers are designed and calculated to suit challenging straightening loads. The straightening

introduced the latest ‘Triple Seal’ purging systems, designed to reduce both gas usage and purging times. The range starts from 1" with made-to-order special models available for up to 40" ID. PIPE Ltd has recently become the UK distributor for the aquasol range of purging equipment, including the E-Z Purge water soluble dam system, the E-Z zone and E-Z wipes industrial cleaning wipes to remove dirt and dust particles prior to application. PIPE Ltd – UK Fax: +44 1869 323273 High quality rolls THE cold straightening process can be applied to many products including longitudinally welded or seamless tube and steel bar, sections and rails. The rolls used in the straightening processes must possess high hardness and wear resistance characteristics whilst also offering the lowest possible tendency to pick up. Rolls manufactured from forged Märker ® cold work tool steels are highly suited to these applications. The breaking rolls are of a one-piece design and made from pre- heat treated and stress relieved Märker ® Zesek. In order to improve the resistance of these rolls, they can be surface hardened in a special hardening process (depth of hardness: approximately 10-15mm). This enables the production of rolls with a hard wearing surface and tough core. For some applications, composite rolls are offered as a two-part design. In this instance, the working part of the roll is the shell manufactured in Märker ® Zesek, fitted to a shaft constructed from tough heat treatable steels. The Schmidt + Clemens Group supplies a full range of high precision roll products for many applications from its manufacturing plants in Germany and the UK. The complete in-house service includes in-depth technical advice on rolls, roll refurbishment, manufacture of rolls to samples, design (rolls for production of tubes and cold rolled sections) and development. S+C Märker GmbH – Germany Fax: +49 22 66 92 509 Email: rolls@schmidt–clemens.de Website: www.sc-maerker.de Email: sales@pipe-ltd.com Website: www.pipe-ltd.com

Multi-roll straighteners for tubes

ASMAG’s straightening machine

machine is part of a fully automatic drawing line for welded tubes, incorporating pointing, drawing, tube rear and front-end cutting, straightening, ultrasonic/ eddy-current testing and multiple cutting equipment. Asmag GmbH – Austria Fax: +43 7616 8801 44 Email: sales@asmag.at Website: www.asmag.at

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