300C.P.: 110MM x 115MM x 2MM
350C.P.: 105MM x 115MM x 2MM
200C.P.: 85MM x 105MM x 2MM
100C.P.: 80MM x 80MM x 2MM |
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| Specifications︰ | We manufacture top quality borosillicate glass chimneys for pressure lanterns,petromax lanterns,gas lanterns and gas lamps.
the specification of our borosillicate glass chimneys:
1. expansile coefficient: 3.3 x 10~(-6)
2. anneal temperature: 620 centigrade
3. soft temperature: 860 centigade
4. thickness: 2+0.2mm
5. outside diameter: 110mm, 105mm, 90mm, 85mm, 80mm available
6. resistance to heat: 350 centigrade
Testing way: spray cold water like raining to chimneys after burning 15 -20 minutes,the chimney will not crack.That is eligible. |
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