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ASTM A297 HU SCH20 Bullet-Shaped Heat-resistant Steel Parts EB3016 Material Grade: SCH23,ASTM A297 HL ,ASTM A297 HK ,Cr25Ni20,ZG40Cr25Ni20Si2, Cr25Ni14; HK2Co20;1.4852;1.4849;Cr14Ni9; Quality Level: ...