Type: Long or short radius. Butt welding elbow, threaded elbow, Socket Elbow; 1. Technics: Seamless Elbow, Welded Elbow 2. Certificate: ISO9001: 2000, API Certificate, Manufacture of Special Equipment 3. Material: ASTM A105, A182, A234, A269, A321, A350, A403, A420, 321, 304, 304L, 316, 316L, WPS, WPB, ST37, ST54. 4. Standard:ASME, ANSI, GB, JIS, BS, DIN, ISO and Non standard. 5. Size: 1/2" to 48 ...