600℃ heat treatment, 24 hours cooling in the oven, 8 meters gantry milling, accurate CO2 protection welding, to make sure 20 years usage without deformation. 3945105508525939223-blid-6622957597214205457

ไม่ตามไม่ได้แล้ว งวดก่อนให้ 46+461 ตรงเป๊ะๆ งวดนี้มาอีก​ 16 มิถุนายน 2562

 
   

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