Posted By Alper Yilmaz Can anyone tell me about the hazards associated with the painted plastic hoses that carry propane or oxygen or argon?

Posted By Jane Blunt Dear Alper Having said that, to answer your question on the hazards - it rather depends on the use. If gas lines come adrift the gas escapes, so the integrity of the couplings and any joins is important, as is the standard of manufacture of the hose itself (hence my earlier posting). Gas lines can be trip hazards. They can be damaged, thus allowing the gas to escape. They need to be protected from mechanical damage, sparks, oils and greases. They perish (if they are rubber!) so need to be inspected at intervals. If you coil up a fuel hose, in order to try to be tidy, it can be really difficult to deal with if it catches fire. There is controversy about the advisability of taping hoses together to keep them tidy. On the one hand it is tidy, but on the other hand they can become more vulnerable to sparks. In no circumstances should the marking of the hose be obscured wholesale by tape. Most people advise against taping hoses together, on balance. Regards Jane