The attachment towards the tops and bottoms only of cylinders by welding of neckrings, footrings, handles, bosses, pads and valve defense rings is authorized provided that these attachments and also the part of the container to which they are connected are made of weldable metal, the carbon content of which https://cesarhsbmr.idblogmaker.com/26917346/bar-178-rtp-no-further-a-mystery