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18 December 2015
HR (British/French) bolt The British/French approach following BS EN 14399-3 and BS 4395 is to use thick nuts and long thread lengths in the bolt assembly to obtain ductility predominantly by plastic elongation of the bolt. The longer thread length is necessary to ensure that the induced strain is not localised. These bolts are relatively insensitive to overtightening during preloading although suite control is still important. Furthermore if severely over-tightened during preloading the ductile failure mode of the bolt assembly is predominantly by bolt breakage, which is readily detectable.
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18 December 2015
The test certificates need to be per BS EN 10204 and include results for required characteristics as a minimum. According to the standard, products need to fully comply with the requirement regarding elongation, impact and reduction of area, but results do not need to be included on the test certificate. BS EN 10204 doesn’t state what figures need to be supplied on the test certificate and leave this open for agreement between purchaser and supplier (typically before purchase).
Read more about Why is there no elongation, impact, reduction of the area on some of the Test Certificates?

18 December 2015
According to the CEN consultant, CE (UKCA) mark cannot be copied when the product is split into smaller batches by a distributor who is not certified under FPC. They must retain evidence of the CE (UKCA) mark of the original batch together with the Declaration of Performance (DOP) ; they are permitted to copy the DOP and must provide a copy with each sub-batch they supply.
Read more about Can bags be split and then re-labelled as CE (UKCA) approved?

18 December 2015
According to Construction Products Regulation (CPR) for CE Marking , and equivalent for UKCA Marking , labels with CE (UKCA) logo can be supplied on bags/boxes or with Quality Documents (like Test Certificates or Declaration of Performance ). According to the British Constructional Steelwork Association (BCSA) recommendation on their published and widely used by many customers Model Specification for the Purchase of Structural Bolting Assemblies and Holding Down Bolts CE/UKCA Label shall be supplied on bags/boxes, however, this is not a law requirement.
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18 December 2015
According to standard requirements, during assembly, you should not use any additional lubrication apart from that originally supplied. BS EN 14399 standard is leaving a clause, that additional lubrication should be used if it is subject to supplier recommendation. Andrews Fasteners BS EN 14399 Assemblies are supplied to k-Class k0 and are offered pre-lubricated. We are supplying lubricated parts of the assembly. Lubricated parts are used where due to surface coating , maximum tension needs to be controlled to prevent seizure.
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18 December 2015
You may notice, some products after hot-dip galvanization (HDG) coating, even in the same facility, using the same process, may look different from others. It can be noticed that some of the products will be much brighter and others much darker. There is nothing wrong with the product nor with the coating and any difference will depend on the product steel. Variations in coating thickness and the content of silicon in steel may cause different appearances on the finished product.
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18 December 2015
Only products covered by harmonised standards (or equivalent for the United Kingdom) can be CE (UKCA) marked. In EN 15408:2007 version, only products under EN/ISO standard can be subject to CE (UKCA) Marking . DIN standard is a German national standard and unless it is an international/European standard (EN/ISO) and approved by the European Union (or separately by the United Kingdom under UKCA marking) as a part of harmonised standards, it cannot be used for CE (UKCA) marking purposes.
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18 December 2015
A typical calculating lifetime of Hot-Dip Galvanising coating is set to 20 years on average, but this is based on many variables like humidity, temperature, environmental impact etc. If you require to calculate the coating lifetime for your localization, please ask a question to Galvanising Association or visit their website for more details. For more details please refer to: Finishes (Plating) Galvanizing is durable Corrosion Rates in UK & Ireland - Corrosion Map
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18 December 2015
Only products covered by harmonised standards (or equivalent for the United Kingdom) can be CE (UKCA) marked . In the construction fasteners industry, products that are covered by the harmonised standard and can be subject to CE (UKCA) marking are to EN 14399-1 (Pre-loaded assemblies) standard and EN 15048-1 (Non-preloaded assemblies) . European Union is publishing in the Official Journal list of standards that are laying down harmonised conditions for the marketing of construction products.
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24 January 2015
BS EN 14399 High-strength structural bolting assemblies for preloading What is the difference between Clamp length and Grip length in EN 14399 assemblies? What is the difference between preloaded and non-preloaded bolting assemblies? Do I need Bolt Face Washer or Nut Face Washer (EN 14399-9) with DTI's? Can high-strength structural bolting assemblies for preloading (HSFG) be used on painted or galvanised surfaces? What is the minimum thread length on high-strength structural bolting assemblies for preloading?
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