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

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

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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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