آ，jis＆en标is和and和en和and和en和and和en和and和en和and和and和and和and和and和and和and和and和and和and和Enشیشیشیشیصکک极，خخککیکییکییکیخخخخ¶

شیشیشییی，خخک证，خخخ，，خخخخخخخ，，یییتتت¶

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ASTM A589 BS 1387 BS 3601 BS 3602 BS 1775 ASTM A135 ASTM A178 ASTM A252

ASTM A53 ASTM A500 ASTM A513

ASTM A249 ASTM A671

ASTM A672

JIS G3445 JISG3444，JIS A5525，jis G3474

EN10255 EN10217-1 ISO9330-1