Centrifugal cast method is one of the processes to provide high quality seamless pipe The advantages of the process are

  1. heavy wall pipe can be manufactured

  2. relatively flexible in material selection for manufacturing pipe

For sweet corrosion environment caused by CO2 (1)(2) where carbon steels can not be used centrifugally cast 12% Cr martensitic stainless steel pipes and fittings have been developed One of the key factors of this material applied to pipeline is the weldability, especially high hardness of the welds or its heat affected zone which causes for brittle rupture as well as stress corrosion cracking of the pipeline. Cast 12%Cr pipe which has high strength with low hardness even at the weld joint has been developed. Besides of the development of straight pipe several types of fittings have been developed. These pipes and fittings have been used for natural gas gathering lines and booster compression lines in sweet corrosion service.

Subject
Materials, Piping, Fittings, Welding, Pipelines, Mechanical properties, Welded joints, Metals, Carbon steel, Corrosion resistance, Hardness, Casting, Stress corrosion cracking
Keywords:
centrifugal casting, 12%Cr steel, martensitic stainless, sweet corrosion, welding fittings
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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