... Standard:ASTM,GB,DIN,JIS 4 Material:A105, 1 Carbon steel pipe fitting 2 ISO9001 cerfitication supplied 3 High quality and ... (45°,90°,180° 3 Reducer 4 Caps Metarial carbon steel ,alloy steel ,stainless steel Sizea)Seamless:1/2-24 b)Welded:24-72 Wall ... customers requirment Application rangesuch as oil ,chemical industry,water conservancy ,electric power,boiler,machine stainless steel blind flange/B16.5