Actually, Chinese Woks usually come with a fire ring that sits on the burner. I'll add a link (to the left) to show you an example...
Anolon Advanced Nonstick Griddle http://www.cutleryandmore.com/anolon-advanced/nonstick-griddle-p18524 This is a good double burner griddle.
Gas enters the bottom of the Bunsen burner, where it travels up to mix with air before moving up the stem to meet the flame.
A crucible is placed in a pipestem triangle placed on an iron ring while being heated. This supports the crucible while allowing the bottom of the crucible to be directly exposed to the flame of the Bunsen burner. There is no item that is used to distribute heat from a Bunsen burner when heating the bottom of a crucible. The bottom of the crucible is intended to be exposed to the direct flame of the Bunsen burner.
one side shoots out flames
conduction
use the turning dial at the bottom
thermal
There will be a valve at the bottom of the Bunsen burner. Using a rubber tubing connect the valve to the regulator of the LPG cylinder.
it is conduction
What_is_the_black_substance_on_the_bottom_of_the_evaporating_dish_after_it_has_been_heated_on_a_bunsen_burner
one side shoots out flames
Is the stove level ? Is the pan wellworn with a rounded bottom rather than a flat bottom ?