Dear Sir/Madam,
I am writing this letter on behalf of "Ahan & Silice Azarakhsh Co." for seeking a quotation from you. In our company we are going to upgrade our systems. In this regard I request you to send a detailed quotation regarding the following items.
We hope your prices are competitive in the industry. We heard about the reputation of your company in the industry and are following you for our services. If the price factor is decided, we shall place the order immediately.
Looking forward to hear from you,
Yours Sincerely,
Azam Toubaei
Sales manager
1. Basic Carbon Bricks TPK
Specification Unit Index
Compressive strength g/cm3 Min 1.63
Bulk density strength N/mm2 Min 38
Thermal conductivity (at 600 °C) W/(mK) Min 14
Ash content % Min 8
Apparent porosity % Max 16
2. Tap hole carbon Bricks-Semi graphite C-SiC SKT
Specification Unit Index
SiC 5 Min 20
C % Min 70
Bulk density g/cm3 Min 1.75
Apparent prosity % Max 18
Compressive strength N/mm2 Min 35
Thermal conductivity (at 800 °C) W/(mK) Min 10
Bending strength N/mm2 Min 9
Matching Tolerance
Material Tolerance
Carbon Bricks and Blocks (Tapholes) Length Tolerance: +/- 1 mm
Width Tolerance: +/- 0.5 mm
Thickness Tolerance: +/- 0.5 mm
3. Carbon Ramming paste THC
Specification Unit Index (green) Index (baked)
Apparent density g/cm3 >=1.60 >=1.50
Thermal conductivity at room temperature W/(mK) >=3.0 >=8.0
Open procity % <=7 <=20
Copmpressive strength @110°C Mpa - 20
Maximum Service Temprature °C 1800 1800
Ash % - 7
4. Carbon Mortar TJ
Specification Unit Index
Fixed Carbon % Min 50
Ash % Max 10
Volatility % Max 39
Test of pressed seam mm Max 1.0
Bending strength of Bonding (300°C ×24h) N/mm2 Min 4
