Yunnan Shenhuo Aluminum Industry Co., Ltd. Announcement on Qualification Pre evaluation of Outsourced Inspection of Overhaul Materials (Project No. YNSH-20250414-022) Project Location: Funing Industrial Park, Yunnan 1. Bidding Conditions: The outsourcing inspection project of Yunnan Shenhuo Aluminum Industry Co., Ltd. for overhaul materials has met the procurement conditions, and the procurement method is open inquiry and comparison. Potential bidders who are interested are invited to submit qualification pre evaluation applications. 2、 Project Overview and Bidding Scope Project Overview: Yunnan Shenhuo Aluminum Industry Co., Ltd. is located in Funing Industrial Park, Yunnan, with a designed electrolytic aluminum production capacity of 900000 tons per year. As needed, we are currently conducting outsourcing testing and price comparison for major repair materials. Bidding Scope: Sample Name Testing Project Measurement Unit Testing Method 1 Thermal conductivity of cathode carbon block w/(m · k) YS/T63.3-2016 Sodium expansion rate% YS/T63.5-20062 Weight loss of cathode paste (hot and cold ramming paste) calcination% YS/T63.1-2019 Apparent density kg/cm3 YS/T63.1-2019 Raw paste ramming density g/cm3 YS/T63.1-2019 Thermal expansion coefficient 10-6/KYS/T63.4-2006 Expansion and contraction rate Δ LA - Δ LB% YS/T63.21-2007 Expansion and contraction rate Δ LA - Δ LC% YS/T63.21-2007 Thermal conductivity w/(m · k) YS/T63.3-2016 Total porosity% YS/T63.3-2016 63.7-2006 compressive strength MPaYS/T63.15-2012 true density kg/cm3YS/T63.9-2012 room temperature resistivity μ Ω. MYS/T63.2-2006 ash content% YS/T63.19-20123 carbon nitride silicon brick apparent porosity% GB/T2997-2015 bulk density g/cm3GB/T2997-2015 thermal conductivity (350 ℃) w/(m · k) GB/T22588-2008 thermal conductivity (300 ℃) w/(m · k) GB/T22588-2008 thermal conductivity (600 ℃) ℃) w/(m · k) GB/T22588-2008 Thermal conductivity (1000 ℃) w/(m · k) GB/T22588-2008 Linear thermal expansion rate (20 ℃? 1000 ℃)% GB/T7320-2008 room temperature flexural strength MPa GB/T3001-2017 flexural strength (1400 ℃ × 0.5h) MPa GB/T3002-2004 room temperature compressive strength MPa GB/T5072-2008 maximum operating temperature ℃ GB/T598-2007SiC% GB/T16555-2008Si3N4% GB/T16555-2008Fe2O3% GB/T16555-2008 residual Si% GB/T16555-20084 brucite composite board compressive strength (thickness direction compression 10%) MPa GB/T13480-2014 thermal conductivity (300 ℃) w/(m · k) YB/T4130-2005 thermal conductivity（