Ans to BS EN 22553 Fillet Welds ex: 11. Welded arrow side: Acontinuous fillet weld with a 6 mm leg length , toes to be blendedsmoothly.2. Welded both sides: Three intermittent fillet welds with6 mm leg lengths, the length of each weld 25 mm and the distancebetween each weld 40 mm. 3. Welded arrow sides: Three intermittentfillet welds with 10 mm leg lengths, the length of each weld 40 mm,the distance between each weld 30mm.Welded other side: Threeintermittent fillet welds 6 mm leg lengths, the length of each weld50mm and the distance between each weld 25mm, welds to bestaggered.4. Welded arrow side: Three intermittent fillet weldswith 8 mm leg lengths, the length of each weld 25 mm and thedistance between each weld 50 mm.Welded other side: Twointermittent fillet welds with 10 mm leg lengths, the length ofeach weld 20 mm and the distance between each weld 40mm, welds tobe staggered.M.S.Rogers
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Ans to BS EN 22553 Butt Welds ex: 11. Welded arrow side: SingleV butt weld with permanent backing strip, flat weld profile. 2.Welded other side: Single U butt weld, flat weld profile3. Weldedarrow side: Single V butt weld depth of preparation 10 mm Weldedother side: Backing run. (Plate thickness 15 mm.)4. Welded arrowside: Single J butt weld, depth of preparation 12 mm with a 8 mmfillet weld superimposed. (plate thickness 15 mm. Welded otherside: 12 mm leg length fillet weld.
5 Published by Woodhead Publishing Limited, Abington Hall, Abington Cambridge CB1 6AH, England Published in North America by CRC Press LLC, 2000 Corporate Blvd, NW Boca Raton, FL 33431, USA First published 2005, Woodhead Publishing Ltd and CRC Press LLC 2005, Woodhead Publishing Ltd The authors have asserted their moral rights. This book contains information obtained from authentic and highly regarded sources. Reprinted material is quoted with permission, and sources are indicated. Reasonable efforts have been made to publish reliable data and information, but the authors and the publishers cannot assume responsibility for the validity of all materials. Neither the authors nor the publishers, nor anyone else associated with this publication, shall be liable for any loss, damage or liability directly or indirectly caused or alleged to be caused by this book. Neither this book nor any part may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, microfilming and recording, or by any information storage or retrieval system, without permission in writing from the publishers. The consent of Woodhead Publishing and CRC Press does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific permission must be obtained in writing from Woodhead Publishing or CRC Press for such copying. Trademark notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation, without intent to infringe. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library. Library of Congress Cataloging in Publication Data A catalog record for this book is available from the Library of Congress. Woodhead Publishing ISBN X CRC Press ISBN CRC Press order number: WP3591 The publishers policy is to use permanent paper from mills that operate a sustainable forestry policy, and which have been manufactured from pulp which is processed using acid-free and elementary chlorine-free practices. Furthermore, the publishers ensure that the text paper and cover board used have met acceptable environmental accreditation standards. Typeset by SNP Best-set Typesetter Ltd, Hong Kong Printed by TJ International, Padstow, Cornwall, England
8 Introduction Symbols for indicating welded joints on engineering drawings were originally devised by individual drawing offices to provide more useful information than a simple arrow with the instruction weld here. This practice was obviously unsatisfactory, especially when drawings were passed from one company to another and, to solve this problem, the numerous symbols in existence were rationalised to some extent by countries compiling their own standard specifications for welding symbols. The American system of symbolisation is the system, formulated by the American Welding Society (). All standards comply with the requirements of the American National Standards Institute (ANSI) and are designated ANSI/. This system became widely used throughout the world, mainly because of the oil industry, and today is used by approximately half the world s welding industry. The rest of the world uses the ISO system, designed by the International Organization for Standardization (ISO). However, a number of countries, particularly those with wide trading links, may use one system in their own country but need to use the other to satisfy the requirements of an overseas customer. Hence the need for a comparison of the two systems. The British system was standardised in 1933 and the latest of five revisions, published in 1995 as BS EN 22553, is identical to ISO For some years an ISO committee has been working on combining the ISO and standards on welding symbols. It is expected that a combined standard will be published in the future which will standardise symbols on a worldwide basis. It is important to appreciate the purpose of welding symbols, which is mainly to transmit information from the designer to one or more persons along the quality system network. This includes the welding engineer, welding supervisors, welders, inspection personnel and inspectors. In many cases it would be unfair to expect the designer to provide all the information possible from welding symbols without the help of a welding engineer and possibly from other welding and inspection personnel. The minimum information provided by the designer should consist of the location and types of welds and the sizes and lengths of the fillet welds. The latter will require knowledge of the mechanical properties of the parent metal and the available filler metals. This will be simple for mild steel but more complex for low alloy steels, stainless steels and non-ferrous alloys. A lot of supplementary information can be added to a welding symbol but it may be more convenient and, indeed, useful to include this in a written Welding Procedure Specification (WPS). This procedure is recommended in the ANSI/ standard. Introduction vii
10 Scope This book is an updated version of Weld symbols on drawings published in It describes the application of weld symbols in British/European Standard BS EN 22553, International Standard ISO 2553 and American Standard ANSI/ A For full, authoritative details the standards themselves should be consulted. References to ISO 2553: 1993 and ANSI/ A have been shortened, for convenience, to ISO and where the full reference is not of primary concern and the context makes the abbreviated reference clear. The BS EN Standard is identical to ISO 2553 so any reference to the ISO standard applies equally to the British standard. Only the representation of a given weld on a drawing is covered in this book. This does not include the design of the welded joint. The drawings are not necessarily to scale and the weld shapes shown are for the purpose of illustration only and do not represent recommended practice. Four exercises in the use of welding symbols are included. These will be of particular use to students studying welding technology. Many thousands of engineering drawings are currently in use which have symbols and methods of representation from superseded standards, e.g. BS 499: Part 2: 1980 or ANSI/ The current European, ISO and American standards are substantially similar but the ANSI/ A Standard includes some additional welding symbols and symbols for non-destructive testing. This book includes material to cover the application of these additional symbols. Although symbols in the different standards are similar, the arrows showing locations of welds are different, and these important differences are explained. ISO 2553 contains very limited information on the representation of brazed or soldered joints. These joints are covered in ANSI/ A2.4-98, which contains comprehensive information on this topic. Scope ix
11 Standards referred to in this book ISO 2553 is published by the International Organization for Standardization, 1, rue de Varembé, Case postale 56 CH-1211, Geneva, Switzerland. It was adopted by the UK as a dual British and European standard (BS EN 22553). A summary wall chart (BS 499-C) giving an at a glance view of the symbols, for use in welding workshops, was subsequently issued. It is published by the British Standards Institution, 389 Chiswick High Road, London W4 4AL, UK. Similarly, the ANSI/ standard is issued in both full standard (ANSI/ A2.4-98) and summary chart ( 2.1-WC, 2.1DC) form. These are published by the American Welding Society, 550 NW Le Jeune Road, Miami, Florida 33126, USA. Further details on these standards as well as others referred to in the text are given below: ANSI/ A ANSI/.A ANSI/.D DC 2.1-WC BS 499-C: 1999 BS 499 Part 1: 1991 ISO 2553: 1992 and BS EN 22553: 1995 ISO : 2003 and BS EN : 2003 ISO 4063: 1990 and BS EN 24063: 1992 Standard symbols for welding, brazing and nondestructive examination. Standard welding terms and definitions. Structural welding code. Welding symbol chart (desk size). Welding symbol chart (wall size). European arc welding symbols symbolic representation on drawings (wall chart based on BS EN 22553: 1995). Welding terms and symbols. Part 1. Glossary for welding, brazing and thermal cutting. Welded, brazed and soldered joints symbolic representation on drawings. Welding and allied processes recommendations for joint preparation manual metal arc welding, gas shielded metal arc welding, TIG welding and beam welding of steels. Welding, brazing, soldering and braze welding. Nomenclature of processes and reference numbers for symbolic representation on drawings. x Standards referred to in this book 2ff7e9595c
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