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About This Item
Full Description
— air-aspirated hand blowpipes which are fed with a fuel gas in the gaseous phase, at a controlled pressure by a regulator, through a gas supply hose;
— air-aspirated hand blowpipes which are fed with a liquefied fuel gas in the gaseous phase at the container pressure, through a gas supply hose;
— so-called liquid-phase blowpipes which are fed with a fuel gas in the liquid phase, and where thermal evaporation takes place within the blowpipe. It does not apply to blowpipes in which the fuel gas leaves the injector in the liquid phase, or to so-called “cartridge” blowpipes where the gas supply is fixed directly onto the blowpipe and possibly constitutes the shank. NOTE Figures 1 to 4 are given for guidance only, to facilitate the explanation of the terms. They do not specify the construction details, which are left to the discretion of the manufacturer.
Document History
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ISO 9012:2023
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Gas welding equipment - Air-aspirated hand blowpipes - Specifications and tests- Most Recent
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ISO 9012:2008
Gas welding equipment - Air-aspirated hand blowpipes - Specifications and tests- Historical Version
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ISO 9012:1998
Gas welding equipment - Air-aspirated hand blowpipes - Specifications and tests- Historical Version