what is this FS ?

Hello, Dear colleagues
Does someone know what is "FS" in this following specification? ASTM A 105,FS,RF,WN FLANGE,SCH 80 BORE. Thank you,

Afshin Zanganeh,

Engineering & Design Manager

Propipe Manufacturing

9625-144 Avenue

Grande Prairie, Alberta,Canada

T8V 7V4

Phone: +1 (780) 402-3131

Fax: +1 (780) 402-3130

Cell: +1 (780) 876-7528

afshin@propipemanufacturing.com

[Non-text portions of this message have been removed] Received on Wed Jan 10 13:48:00 2007