Hellow guys, Welcome to my website, and you are watching SYS กูรู..รู้จริงเรื่องเหล็กเอชบีม : เหล็ก H-Beam, Wide Flange, I-Beam ต่างกันอย่างไร มาดูกัน!!. and this vIdeo is uploaded by SYS STEEL at 2021-11-04T01:00:13-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.