brass pipe fittings, male equal elbow male thread NPT/ISO/BSP from 3/8 to 2 inch CW614n, CW617n, ... system 5. Model options: 45 degree, 90 degree, equal elbow, reducing elbow, threaded elbow, welding elbow.6. Brass material: (HPb57-3A, HPb58-3A, HPb59 ... nickle, chrome, brass natural, zinc, HDG9. Connection type: thread (BSP, NPT), flange, welding10. Standard: ISO, GB or ASTM, ANSI11. Certification: ISO ...