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ASTM Àü¹®
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ASTM A490
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ASTM A320ÀçÁúÀº ÁÖ¹®»ý»ê Ç°¸ñÀÔ´Ï´Ù.
¼Ò·®ºÎÅÍ ´ë·®±îÁö ¸ðµç»çÀÌÁî »ý»ê °¡´ÉÇÕ´Ï´Ù.
H.D.G(¿ëÀ¶)¶Ç´Â ±âŸ µµ±Ýµµ °¡´ÉÇÕ´Ï´Ù.
°ßÀû¹®ÀÇ´Â Æ彺 or °ßÀû ¹× ÁÖ¹® or E-mail ·Î ¹®ÀÇÁÖ½Ã±æ ¹Ù¶ø´Ï´Ù.
ÀüÈ°ßÀû¹®Àǽà ASTM´ã´çÀÚ¸¦ ã¾Æ ÁÖ½Ã±æ ¹Ù¶ø´Ï´Ù.
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