Chemweld, Inc., headquartered in Norcross, GA is the exclusive manufacturer of Chemolene fuel gas.. Chemweld, Inc. has been serving the welding and metal working industries since 1975. Chemweld is the exclusive manufacturer of Chemolene fuel gas, a safer, more cost effective and environmentally friendly alternative to acetylene and propylene. Our national distribution network makes Chemolene available anywhere in the United States. Chemweld continues to grow as the demand to replace acetylene and propylene with a more cost effective, safer and environmentally friendly industrial fuel rises.