TPI January 2009

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January 2009 Tube Products International 19
developmentsproducts &
Custom tubular supports
Diversico Industries, USA, established in 1960, is a tube forming and speciality
swaging manufacturer. The ISO 900:2000 certified company has complete
in-house proprietary custom forming, rotary swaging, and end-forming, plus
secondary operations such as
drilling, punching, machining
and finishing.
Customtubularsupports,poles
and leg components swaged
and formed by Diversico can
provide design benefits over
other fabricating processes.
Available in lengths from 1"
to 15 ft, and diameters from
1/8" to 16", the custom tubular
components add strength,
resist bending, simplify
design and add visual product
appeal.
Part characteristics available include transitions from round to square, tapers,
expansions, reductions, reshaping, flaring, beading, weldless assemblies, heavy
and thin wall, mating components, slip fits and reinforced tubes inside tubes.
Diversico fabricates many combinations of these part features, such as round to
odd shapes with extreme wall thickness. Components can be end-formed with
multiple secondary operations such as threading and beading. Materials formed
range from aluminium to zirconium and almost everything in between.
The key benefit of the designs is to provide an array of new options. For
example, Diversico’s swaged tapers are strong and resist bending.
The chipless forming process Diversico uses causes the grain in metal to flow
with the configuration of the part, maintaining or increasing the part’s strength.
Also, tubular assemblies can be eliminated by combining several formed tubular
parts into a single-piece formed tube.
This removes the need for welding or adhesives that can cause heat distortion
and finishing problems. Another option is weldless tubular assemblies, where
one tubular part is inserted into another and locked into place.
Weld-free assemblies mean heat sensitive parts can be joined without
expansion-coefficient problems.
Diversico Industries, Inc – USA
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Applications for Diversico’s custom tubular poles, S S
supports and legs include furniture, recreational,
industrial, agricultural and marine products
Longitudinally
welded steel pipes,
coatings and linings
Riveco Generalsider SpA, Italy, is an
industrial group focused on supplying
products and services to companies
involved in the business of conveying
fluids, of transporting energy fuels
(oil and gas) and to infrastructure
industries.
The company’s production is carried
out on two different industrial sites with
a combined extension of 96,000m2.
The first production unit manufactures
longitudinally welded steel pipes from 3"
to 16" in compliance with most relevant
international standards (including EN,
API, DIN and ASTM), and pre-insulated
pipes for district heating and HDPE
pipes.
In the second production unit,
anticorrosion coatings and linings for
pipes up to 64" are applied, including
PE, PP, concrete overweighting and
sacrificial anodes application for off-
shore pipelines, rock-shield mechanical
protections, polyurethane foam
insulation for district heating projects
and related services.
Riveco Generalsider operates two S S
industrial sites
The company’s quality assurance system
is certified according to international
standards UNI EN ISO 9001:2000
and API 5L Spec Q1. In addition, the
company has acquired certifications API
Spec 5L, TÜV AD 2000-HP 0 and TÜV
AD 2000-W0/TRD100.
The company is also a registered and
qualified supplier, and has obtained
a number of qualifications from
major companies in the oil and gas
transmission field.
Riveco Generalsider SpA – Italy
Suraj Metasteel is a stockist and
importer from well-known mills such as
Outokumpu, Columbus, Accerinox, Bao
Steel Mill and Tisco Mill.
The company offers stainless steel
plate, sheets and coils of 304, 304L,
310, 316, 316L, 316Ti, 321, 409, 430,
Duplex UNS, S31803, S32760 and
S31500 grades, with test certificates.
The company maintains its own stock,
in order to provide prompt delivery.
Suraj Metasteel Ltd – India
Stainless steel coils, sheets and plates