L51805 Tensile Property Variation in DSAW and ERW Line Pipe

This study was conducted to determine tensile property variability and its origins in HFERW pipe produced from hot-rolled coils and DSAW pipe produced from plates. Data were collected for DSAW line pipe produced from plates made by flattening coiled skelp. Data have been collected from steelmakers and pipe mills in North America and other countries, including Australia, France, Mexico and Brasil. Results span the most advanced plate and pipe mills to older mills which do not always incorporate modern process control. Data for different steelmaking processes were collected and for different rolling philosophies. A limited amount of data from thin slab product are also presented.