GB 1348(88) QT 800-2 (China)GB 1348(88) QT 900-2 (China)AFNOR NFA32201 FGS900-2 (France)DIN WNr 0.7080 (Germany)DIN 1693 GGG-80 (Germany)NS 11301 NS11380 (Norway)GOST 7293 VCh100 (Russian Federation)ISO 1083(87) 900-2 (International)BS 2789 900/2 (United Kingdom)ASTM A536(93) 120-90-02 (USA)
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