TPT November 2010

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54 November 2010 ›
Technology Update
Welding,
forming and
cutting lines
NANJING Zhongqing Machine Making Co,
Ltd manufactures various ERW straight
seam pipe welding lines, high precision cold
roll forming lines, and coil sheet slitting and
cut-to-length lines.
The company’s lines are capable of
producing pipe diameters from 8 to 660mm
and wall thicknesses from 2.3 to 22mm. The
60mm tube welding line has won several
domestic prizes. The company’s LWGC450
high precision cold roll forming line won
the ‘China Innovation Prize for Cold Roll
Forming Equipment’.
In recent years the company has
developed thick wall pipe welding equipment
for the production of pipeline pipes, petroleum
casing pipes and oil pipes. The pipe welding
lines are capable of handling steel grade X42-
X70, J55 and N80-1 using flexible forming
technology. These lines use PLC control
to realise a high degree of automation,
automatic parameter setting and production
process automatic monitoring.
Nanjing Zhongqing Machine Making
Co, Ltd – China
Fax: +86 25 84591061
Email:
Website:
Maillefer at
K Düsseldorf
2010
AT October’s K show, Maillefer exhibited a
series of innovations for its tube and pipe
extrusion lines.
Maillefer’s drip irrigation lines include
an entire series of innovations. More
tube constructions and dripper types are
available from the PIL extrusion lines. The
fully integrated components include high
performance dripper feeding and insertion,
multi-layer extrusion and fully automatic
non-stop coiling from the new KWI coiler.
With the increasing demand from agriculture
for ecological water irrigation systems,
the drip irrigation extrusion lines are a
smart response for tube manufacturers
worldwide.
In the area of heating and plumbing pipe
are the new Maillefer forming and welding
components used in manufacturing PEX-
AL-PEX composite pipe. Features include
easier forming tool setups, elimination
of wear and dust from TIG grounding,
and improved weld surveillance. Maillefer
has undertaken the redesign of all the
components on the PCL line, and the result
is improved performance, efficiency, ease of
operation and processing quality.
Maillefer also presented its extrusion
lines for blown fibre tubes and microducts,
medical IV tubes, automotive fuel line tubes
with six or more functional layers, and gas
and water pipes. Highly engineered tube
and pipe extrusion, such as large multi-layer
flexible pipes for the subsea oil and gas
industry, is the company’s speciality.
Maillefer SA – Switzerland
Fax: +41 21 691 2143
Email:
Website: