مناقصه تامین بال ولو کلاس ۶۰۰ نوبت اول شرح کالا -BALL VALVE AND REPAIR KIT, METALIC BALL, ACCORDING WITH AP1608 STANDARD. - MATERIAL FOR BODY: CARBON STEEL A216 GR. WCB BALL: LOW ALLOY STEEL WITH %13 OR UPPER 30 IN CLASS 600 F-F= 1651 mm 8 IN CLASS 600 F-F= 660 mm 24 IN CLASS 600 2 IN CLASS 600 F-F= 1397 mm F-F= 292 mm قلم - معادل ۲۸ عدد