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[MW:4079] RE: 4075] Plug valve standard - API6D

By Materials & Welding
hello
1.4408 and 1.0038 are  material grade as per EN 10024, steel for pressure purpose , standards. These numbers are EN material numbers for materials..
They are  similar / equivalent material grades for ASTM  A351 CF8M and carbon steel casting.
 
Regarding valve design standards, API 6D is a valve design standards which provides body - bonnet wall thickness and pressure ratings of the valve.
where API 599 is standard specifying the actual construction - dimensions of the plug valve.
 
 

Rahul


From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Ohm-Srinivasulu. K
Sent: maandag 18 januari 2010 11:53
To: materials
Subject: [MW:4075] Plug valve standard - API6D

Hi,
 
Data sheets specifies Jacketed Plug valve for Sulfur service as below.
 
Specified                                    Proposed
Const : API599                          API6D
Plug :  A351 CF8M                   Stainless steel 1.4408
Bolts/Nuts: A193B7/A1942H     Bolts/ nuts A4-70
 
and jacket material as steel 1.00038
 
what are these 1.4408 and 1.0038 are these ASTM standards
 
 
API6D is Specification where as API599 is a Standard, can we use like this
what major difference between specs and standard.
 
Please let me know if acceptable or not.
 
Thanks & Regards,
Ohm-Srinivas
 
 
 ohm guru namasivaya


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