Here are universal Color coding: oxygen cylinder is black and acetylene is maroon, hoses and regulators are color coded with oxygen as blue and acetylene as red.
Here are a few safety tips to follow when using gas welding hoses. Knowing how to identify a welding hose is crucial to protect the work piece from damage.
Oxygen and acetylene weld lines are the most common welds on gas tanks in the United States, but require more rework when cleanliness is required.
Now that you know the right color of the welding hose in the U.S., it seems easy to weld a gas bottle means that it should be of a certain color. If you understand the gases required for welding practice, you know what color allocation you expect.
In the US, the fuel used must be red and the oxygen must be green, and all other gases used in fuels such as diesel, gasoline, diesel and other fuels must also be green. Therefore, one has to distinguish between the oxygen supply in green and the fuel used by the color red.
If you buy a particular welding tube with a color that normally has no meaning, take the time to understand the color scheme. Some tubes may contain instructions for use, so rely on skills and common welding knowledge to figure out the right color schemes.
In addition to the different colors have red fuel hoses left – hand thread, acetylene hose left and green oxygen hose right. Generally, the tube is recognized by its color, but the fittings of the oxygen tube have a right-hand thread, while the green and the oxygen hose both have the right hand threads. The color of the tube welding on the gas tank varies depending on the country in which you work or live.
If you’re in UK, potential confusion in the UK is that oxygen tubes can also be black, especially with older devices. Although there are standards for the uniformity of gas tanks, some devices cannot follow the standard uniformity of gas hoses. With older devices, the best way to distinguish between oxygen and inert gas is to attach the blue band at the end of the hose.
All tubes, flashlights and gas regulators should be color-coded – in the UK, and all tubes, regulators and flashlights should be color-coded.
A blue color indicates the hose as suitable for use with oxygen, and a red hose is used for acetylene and other fuel gases. If you weld a gas hose line, the oxygen hose is blue and the fuel hoses are red, what color do the gas hose lines have?
If you use LPG, the fuel hoses are orange, indicating that it is compatible with L-Gas. If you use acetylene, gasoline, propane, natural gas or any other fuel gas when you use it, your fuel hose will be orange.
If there is an excess of oxygen, the whitish-blue flame will be smaller than the blue flames, and the flames will oxidize. When the welder slowly opens the oxygen valve on the torch body, he sees only two flame zones and attacks one flame.
Oxygen- and acetylene hoses are fixed with a permitted clamp, and if a fire in the cylinder is smaller than the flame of the hose connection, the valve shaft or the fuse plug try to extinguish the fire from the cylinders as quickly as possible. When a lightning strike back, i.e. a flame flashing back to the torch and extending to a hose regulator, or when a fire occurs in a cylinder with a small flame or hose connection, the acetylene valve or valve in that cylinder is quickly closed and closed. The torch or oxygen valve must close quickly and be in a closed position, with the oxygen tube in front of it and the gas valve behind it.
The result is that a fuel gas such as acetylene can flow from the oxygen hose to the regulator. When the torch is ready, the fuel gases are turned off, and the result is a fire in the bottle.
Therefore, you must ensure that you select the ideal welded gas hose that fits perfectly with your welding machine. If you know how to identify the gas to be used by the color of the hose, you can stay as safe as possible. The rules are very variable and can change depending on the type of weld you perform and the ability of your welders to identify the gases by the color of the hose and tank. You need to know not only all the standards where you weld, but also the rules for when and how you weld.
One of the most common methods of cutting and welding hoses is twin or double hose, which consists of joining fuel hose and oxygen hose side by side. The two nipples used for the acetylene hose are the same size as the two nipples used in the oxygen hose. Two nipples are used on the oxygen nozzle and one nipple on both the gas and fuel nozzle. Twin hose or twin versions use a twin hose design, which means that both oxygen and fuel hose are connected.