all sizes of kerosene lamp cover made of glass - 50-315mm

1. made of pyrex glass, 2. high-temp resistant, acid-proof, alkali-proof, 3. great transperence - details see: //www.lightinghere.com/all-sizes-of-kerosene-lamp-cover-made-of-glass-10000395
Place of Origin: Jiangsu China (Mainland)Brand Name: Zhi ChengModel Number: 50-315mmMaterial: Glass
Shape: RoundStyle: glass-madetemperature resistance: high-temperature resistant(820 degree) 
all sizes of kerosene lamp cover made of glass
contact supplier for all sizes of kerosene lamp cover made of glass


all sizes of kerosene lamp cover made of glass

1. made of pyrex glass


2. high-temp resistant, acid-proof, alkali-proof

Chemical Compositions and Physical and Chemical Properties of Borosilicate Glass Type 3.3
compositionSiO2B2O3R2OAl2O3Fe2O3
weight%80.313.04.22.40.035
Physics performanceNumerical ValueUnit
Medium coefficient if linear expansion3.3±0.110-6K-1
Softening point820±10°C
Viscosity temperature510±10°C
Uper annealing temperature560±10°C
Thermal conductivity(20-100°C)1.2Wm-1K-1
Temperature for the specific electrical resistance240°C
20°C Demsity ρ2.23±0.02g/cm3
Endure water under 98 °CISO0719-HGB1/
Endure water under 121 °CISO0720-HGA1/
Acid-proof testNa2O≤100µg
Alkali-proof testISO0695/


3. great transperence

4. annealing furnace online when make processing by firing

Packaging Detail:five-layer corrugated carton, for 133*70mm, 80 pieces in one carton and the size of the carton will be 563*564*390mm and there will be 238 cartons in one 20 GP.
Delivery Detail:15 working days after the receipt of deposit as a usual

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