مناقصه تامین قلم لوله آب ۴ اینچ لوله آب ۴ اینچ با ضخامت ۴/۷۸ میلیمتری و شاخه ۱۲ متری Pipe, HFW. 4 IN (~114,3 mm), SCH. 30, 0.188" (4.78 mm), 12.91 Kg/m) Material acc. to: API 5L (Grade B), PSL 2 or ASTM A106 (Grade B) or ASTM A53 (Grade B). End Beveled for Welding at angle of 30 Deg. (+5-0) Inspection Level 4 (MTCs, IVRs, RNS & ICs are required and shall be Inspected, Witnessed & Issued by Approved TPI)