Harsh Steel Stocks, Manufacturers and Exports Hastelloy alloy B2,C22,C263 and C276 capillary pipes and tubes along with Hastelloy alloy B2,C22,C263 and C276 seamless and welded pipes, Hastelloy alloy B2,C22,C263 and C276 heat exchanger tubes, Hastelloy alloy B2,C22,C263 and C276 finned pipes and tubes, Hastelloy alloy B2,C22,C263 and C276 U tubes in standards of ASTM B161 - ASME SB161, ASTM B165 - ASME SB165, ASTM B167 - ASME SB167, ASTM B407 - ASME SB407, ASTM B423 - ASME SB423, ASTM B622 - ASME SB622, ASTM B725 - ASME SB725, ASTM A165 -ASME SB165, ASTM B619 - ASME SB619 as per ASME B36.10 & ASME B36.19.