Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
A.2.4 Requirements for the use of cast irons
A.2.4.1 General:- Grey, austenitic and white cast irons shall not be used for pressure-containing members. These materials may be used for internal components if their use is permitted by the equipment standard and has been approved by the equipment user. Ferritic ductile iron in accordance with ASTM A395 is acceptable for equipment unless otherwise specified by the equipment standard.
A.2.4.3 Compressors and pumps Grey cast iron:- (ASTM A278, Class 35 or 40) and ductile (nodular) cast iron (ASTM A-395 ) are acceptable ascompressor cylinders, liners, pistons and valves.
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On Sat, 16 Jun 2012 15:15:39 +0530 wrote
>Dear Experts,
One of our leading Client has rejected the Centrifugal Water Pump on the basis that Cast Iron is not acceptable in Oil and Gas industry.
The Cast Iron has been used for Casing and Impeller, Material: ASTM A395 Gr 60-40-18.
The Design Code for Pump is ASME(Form A2).
Purpose: This pump is a used for cooling the oil for the Cylinders of a Gas Compressor.
Moreover. the requirement that Cast Iron is not acceptable is not specified in Client Standard/Specification.
I request all experts in this subject to through more light and let me know if you require any further inputs.
Appreciate to see quick response.
Thanks & Regards
Vino - Doha
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To post to this group, send email to materials-welding@googlegroups.com
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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