Z-D(Direction)

2013년 1월 13일

SM570 JIS, Z- Direction Reduction Area Test

SM570 JIS and Z- Direction Reduction Area Test STEELMAX Steel Story   SM570 규격은 단연 으뜸입니다…KS 는개정 후 SM460B 로 변경 용접구조용강에 나타나는 KS, JIS 규격의 […]
SM570 JIS,  Z- Direction Reduction Area Test
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