Tube coils in a radiant section of an ethylene cracking furnace are subject to corrosion. Repair welding of these tube coils is difficult. A degraded tube section is replaced by welding in a virgin tube section. The current paper presents the test results of a weld joint between a service-exposed tube and virgin tube using automatic orbital and manual gas-tungsten-arc welding (GTAW) processes.
Establishes guidelines to prevent most forms of environmental cracking of weldments in carbon steel refinery equipment and piping. Welding processes covered by this standard include shielded metal arc welding (SMAW); gas metal arc welding (GMAW), including flux-core arc welding (FCAW); gas tungsten arc welding (GTAW); and submerged arc welding (SAW). Almost all types of weld configurations are included. The standard also addresses corrosive environments, hardness, and total stress in relation to in-service cracking of carbon steel welds. PRINTED HARD COPIES REQUIRE A MINIMUM OF 7-10 DAYS FOR PROCESSING BEFORE SHIPPING.