Specifies requirements for materials, welding consumables, welding processes, weld preparations, qualifications of welding procedures and personnel, and fabrication and inspection for the construction and maintenance welding of pipelines down to 3.2 mm wall thickness designed and constructed in accordance with AS 2885.1. The welding of pipelines with wall thickness less than 3.2 mm is not precluded but is not expressly covered by this Standard.