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All parts is made of Stainless steel and brass gas jet nozzle. highly resistant to corrosion compared to other metals. This is not made from hardware store plumbing parts , like other seller's black iron pipe that has a short life because easily corroded in hot circumstances.
1: We use 1" O.D. feed tube ( 8''=20cm long) and 2" O.D. air choke allow for maximum air flow with a proper size gas port tuned to produce higher BTU with less propane , this design is more efficient and saves you money on propane cost , and can run at lower gas pressure and produces a NEUTRAL flame with no need to adjust air flow , the burner is self adjusting and drafts the proper amount of air based on fuel pressure .
2: We use 1-15/16"=48.5mm O.D. wide flame cone on the bottom and has more than enough heat for medium size forges.
* Orders Shipping within 1 or 2 day with tracking number . Pick up or Cash is not allowed.
* 30 days for an exchange,return or refund .* We have 3 warehouse in East,Central and West of USA. We will ship it from the warehouse nearest to you. so you can receive it in 2--5 days.