How many kilograms of welding material are needed to manufacture one ton of steel structures? ?

This should be determined based on parameters such as the number and size of welds, with reference to relevant quotas. ;P

The usage amounts vary greatly depending on the form, making it impossible to estimate accurately. As mentioned above, you can refer to the standard consumption amounts. I have the installation rates for Petrochemical 07 here; although they are outdated, they are provided for reference only.

Wow, the big shot is really generous;P;P

Now, gas shielded welding is used for steel structures, and the consumption of welding materials is decreasing

The amount of welding material consumed can be understood in different ways; after all, the welding process involves using molten metal to join two base materials together. If calculations are done strictly based on the theoretical weld leg height specified in the drawings, the total amount of molten metal required remains constant. The loss of welding rods is mainly due to the final holding section of the welding torch, spatter during the welding process, improper use by the welder, as well as the weight of the flux in the rod itself; as a result, the overall utilization rate of welding rods is approximately 50% to 60%. As for MIG welding wires, aside from the spatter during the welding process and the portion of wire that cannot be automatically fed into the wire holder at the end, they can achieve a utilization rate of over 90% ； The second factor is price; taking ordinary carbon steel welding materials as an example, J427 manual welding rods cost around 18 yuan per kilogram, while ER50-6 MIG welding wires cost about 32 yuan per kilogram. Moreover, MIG welding requires a shielding gas; therefore, when all factors are taken into account, the cost of manual welding electrodes is more advantageous. The advantages of MIG welding are high welding efficiency; there is no need to bake the electrodes, no need to frequently retrieve electrodes from the electrode holder, no need to replace electrodes using a welding torch, and no heavy effort is required to clean up slag – moreover, spatter is relatively low. The welding efficiency of MIG welding is, when calculated comprehensively, roughly 2 to 3 times that of manual welding with electrodes! The fourth is quality. One of the persistent criticisms of MIG welding is its low heat input, which results in a shallow molten pool in the base material during welding and lower joint strength after welding. In many places, MIG welding is only allowed for less critical areas; it is mostly used for applications such as sealing welds in areas where strength is not a concern.

Is the J427 manual welding rod around 18 yuan per kilogram? ? ? Whose is it? ? ?

I already said it: when taking everything into account, the welding efficiency of MIG welding is roughly 2 to 3 times that of manual welding with electrodes!