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ZinTruss is a suitable C purlin that provide long spans between portal frames on your building. ZinTruss C purlins are available in different sizes and material strengths to match the design frame of your building.
A zinc coating of Z275 (275g/m2 minimum coating mass) is the standard coating class provided with ZinTruss C purlin.
This will provide a long and trouble-free life for enclosed buildings and open-sided rural buildings, in a non-aggressive environmet, recommended is 1000 meters from rough surf, 750 meters from industrial emission and fossil fuel combustion and 300 meters from calm salt waters.
Consideration must be given to the nature of activities performed within the building.
The zinc coating on purlins is fully compatible with the zinc and zinc/aluminium coatings used on roof and wall sheeting.
The galvanised coating used on the steel to manufacture ZinTruss C purlin is designed for internal use only. The coating should not be used in contact with chemically treated timber or other treated products in the presence of moisture.
Available custom-cut in any transportable length. For normal deliveries nominal length should not exceed 12 meters with special transportation and on-site handling facilities.
Lengths greater than 20 meters require a special transportatio permit from the loal authority. No custom-cut length for less than 1.5 meters available.
ZinTruss C purlins warrant the prime quality of their galvanised products, but cannot accept liability for damage to the material sustained during and after profiling, transport to or storage at the building site, and during erection.
ZinTruss C purlins has a variety of accessories that are adaptable to all practical applications. Any combination of channel, locator end, lock end and bolted end can be supplied in pre-assembled form.
ZinTruss C purlins are delivered in strapped bundles. The actual quantity in each bundle will vary with section size, order and length.
Bundles of purlins should be neatly stacked off the ground and on slight slope so that water can drain away. If in the open, it should be protected with waterproof covers to prevent the entry of water and condensation. Such moisture cannot evaporate readily and can cause coating damage which can reduce the life of the product. If bundle becomes wet, the purlins should be separated, wiped dry and covered.
Other accessories should be treated similarly. Bolts and nuts in particular should be kept clean, dry and free of dirt or dust to prevent problems when tightening. Bundles of purlins must be lifted carefully to avoid damage. Long length should be lifted using a separator bar and fabric slings. Care should be taken seriously to prevent local damage at the lifting points.
The welding of purlins is not recommended. The heat produced in wielding will affect the material properties of the High Tensile Galvanised Steel used by ZinTruss C purlins. In many instances considerable stress concentrations are likely to arise, even with good quality welding. In addition wielding will locally remove the galvanised coating leading to a potential reduction in durability.