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78

J

anuary

2011

www.read-tpt.com

S

traightening

& F

inishing

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

Pipework fabrication tools and equipment

Multi-roll straighteners for tubes

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

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

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

Email:

sales@pipe-ltd.com

Website:

www.pipe-ltd.com

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

ASMAG’s straightening machine