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2 GUIDANCE GUIDE TO TOLERANCES, MATERIALS AND WORKMANSHIP IN NEW RESIDENTIAL CONSTRUCTION 2015 DOCUMENT STATUS THIS DOCUMENTS STATUS ISBN 978-0-478-43380-7 (Online) Published May 2015 Ministry of Business, Innovation and Employment PO Box 10-729, Wellington, New Zealand. Introduction and application of Q345 low alloy steel - EB Jul 22, 2019 · Q345D:impact at -20 Q345E:impact at -40 External standard of Q345:GB709, internal standard:GB/ t1591-2008. Due to the implementation of the standard, this steel plate allows negative tolerance delivery. The chemical composition of Q345 material is as follows:Q345A:C0.20, Mn 1.70, Si0.50, P0.035, S0.035;
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