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강 관 말 뚝
규격 558.8X12T
단중 166kg
길이 12m
http://hapsteel.co.kr
http://tv.kakao.com/channel/2829905/video
https://www.youtube.com/channel/UCEQuQ00G1AMuDgxRhndpRAQ
https://play.google.com/store/apps/details?id=appinventor.ai_hapsteel.qw
http://pf.kakao.com/_XbHXV