HFI welded pipes for distribution and service lines offer advantages in terms of better tolerances and higher strength over seamless pipe and in terms of suitability for sour service including high toughness in the weld area over conventional ERW pipe. The realization of the aim of the production of a thin wall line pipe for sour gas applications from homogeneous, finegrained steel with low degree of segregation of alloying elements needs special measures to be taken in all production steps, like selection of a steel with specific composition, use of a rigid continuous casting machine, rolling and accelerated cooling process during strip production and double induction heat treatment of the seam weld region following the high frequency welding. To prove the suitability of thin wall HFI pipes for sour service, different laboratory and full scale tests were performed using the conservative environment according to NACE Standard TM 0177-90, method A.

Subject
Hydrogen induced cracking, Test methods, Pipe surfaces, Materials, Piping, Walls, Pipelines, Pipe sections, Steel, Hydrophobic interaction chromatography, Heat treatment, Stress corrosion cracking, Inclusions
Keywords:
Thin wall, pipeline, sour gas, HFI-Pipe, laboratory test, full scale test, hydrogen induced cracking, hydrogen stress cracking
© 1993 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1993
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.