... ,304L,316,316L water,oil,gas pipeline system. Stainless steel welded pipes/tubes- 304,316/ mirror pipe1, spec.: 12-100mm, wall: 0 ... used in transporting water, oil, gas for building and pipeline system.It is so safety and heath for dinking water, It ... best choice for your family. Stainless steel welded pipe/tube-mirror pipe304,316