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839-80 (DIN 48201/1, BS 7884,GOST 839, ASTMB-8)

839-80



(DIN 48201/1, BS 7884,GOST 839, ASTMB-8)**




. . – . ().
 

 

II III 15150, .
 


 

- , ……..+90

, …………………………………………………………45