TPT January 2008

P rotection I ssues: C oating, J acketing & G alvanizing T echnology

R egular stern warnings about the consequences of faulty practice – such as protracted standstills of the tube galvanizing equipment, zinc losses, inordinate repair work – dramatize the importance of these barrier specialties, although they scarcely need it. Coating, jacketing, and galvanizing form the first line of defence against all that would compromise the integrity of the tube. They are not likely to be undervalued. But, while the protective element is paramount, these specialties have a further mandate. The fortified tubular must perform as well as survive,

and whatever protects it must dovetail perfectly with its function. Anyone who has seen partial- coverage jacketed pipe being made with the use of lap-joint, weld-neck, and insert-type flanges has been present at the creation of a workhouse product. Unless the bore of the flanges is securely welded to the core pipe, it is almost moot how effectively the apparatus is jacketed. Protection issues, then, span the industry. The literature often accompanying these specialties may usually start out on a cautionary note. But that is because the professionals in this field know that the story ends well: with the fine products of the tubemaker’s art made impregnable to exterior assault over the full course of their life in service.

available in clear or smoked versions. The high performance coatings have excellent salt spray and immersion resistance. Quakercoat 060 provides 100 per cent adhesion when applied to properly prepared hot rolled or cold rolled steel, and is effective on seamless tubes, providing improved consistency, better appearance, and reduced handling damage. The 035 series provides 100 per cent adhesion when applied to commercially clean cold rolled steel, hot rolled, or pre-galvanised steel, and is most frequently used in welded tube operations. Quakercoat 028 series is recommended for straight/non-mechanical pipe, and will have 90+ adhesion levels when coated and cured to commercially acceptable levels. This product is not recommended in operations that require flexibility. Quaker Chemical Corporation – USA Fax : +1 610 832 8682 Email : borotaum@quakerchem.com Website : www.quakerchem.com

UV coatings – a solution for cosmetic protection

Quakercoat ® UV coatings from Quaker, USA, are designed to meet all the requirements of the steel tube and pipe industry. Quaker’s UV chemistry has been formulated for use as a basic clear coat and full hide black coat. Custom colour formulations are also available. Quakercoat UV coatings contain zero VOCs. The near-instantaneous cure response reduces product handling issues and improves ‘just-in-time’ delivery

requirements. Surface properties include scuff and scratch resistance, and high gloss. The coatings have excellent weathering ability and are formulated to achieve high levels of salt spray resistance. It is possible to achieve high film builds, ranging from 0.5 to 2.0 dry mils. All Quakercoat UV coatings are ready to use, have no pot life, and can be applied easily with airless, conventional air spray, flood and wipe, or a vacuum coater. The coatings

allow for immediate outdoor storage in wet conditions and are typically waterproof.

fi Quaker offer a range of tube and pipe coatings

The are

coatings

available classes

in of

three

performance. Quakercoat 060 series and 035 series are both flexible and durable coatings The

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J anuary 2008

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