1. size: 1/2"-48" 2.w.t.: sch10-sch160,sgp,std,xs,xxs, 3.material : astm a234 wpb , din , jis, en10253,gost 4.type: elbow,carbon steel elbow1.name: welded or seamless elbow2. deg:15deg,30deg,45deg,90deg,180deg3. lr or sr4. wh: sch 10,sgp,std,sch 20-sch 160,xxs5.standards: asmt wpb a234,ansi b16.9,jis,din,gb,gost,kb6. surface treatment: black paint,vanish paint,rust-proof oil,hot galv7. application:prtroleum, chemical, power, gas,metallurgy,construction etciso 9001certificate.1.butt welded fitting:2.production acc. to the standard of gb /astm / asme / din / jisastm b 16.9 /16.11 b 16.28 jis b 2311/2220 din2617/2616/2615/23913.types: elbows, seamless and welded, lr & sr ,bend -equal and reducing tees,seamless and welded - concentric and eccentric reducers,seamless and welded -caps,4.wall thickness: from sch5 up to sch160/std/xs/xxs5.material grades: a403,wp304, wp304l, wp316, wp316l, a234wpb,6.dimensions: seamless: from 1/2' up to 24'7.wlded: from 1/2" up to 72