1). Outer diameter: 1/2-28 2). Wall thickness: sch20, sch40, std, xs, sch80, sch160, 3). Standard: astm a53a, bs1387-85, jis-g344, gb/t3091-2001 4). Packing: as per customers requests. Application: crude oil, pipelines, natural gas pipelines, waters supply lines, foundation piles, industrial pipeline networks, steel constructors, etc. Painting black, cap, in bundle.