China Welding torch according to combustible gas and oxygen mixture can be divided into two types: isostatic and ejection type;according to size and weight can be divided into two types: standard and portable; according to the number of flame is divided into single-flame and multi-flame two categories; According to the type of combustible gas is divided into acetylene, hydrogen, liquefied petroleum gas and other categories; by method of use is divided into two types : hand and machinery. Isobaric welding torch combustible gas pressure and oxygen pressure are equal, so called pressure type. Isobaric welding torch has the advantage of not prone to tempering, but the isobaric welding torch can not be used for low-pressure acetylene, thus limiting its use, so the current isotherm welding torch rarely used. The jet suction torch, acetylene flow mainly depends on the role of aspiration, so regardless of the use of low-pressure acetylene or medium-pressure acetylene, both can make the torch work properly. At present, the welding torch is suction type.
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