ABRASION RESISTANCE

SIDOARJO, 19/11 - ABRASIAING. A worker is among hundreds of hexapods (water lightening rollers), not far from the Tanggul Kali Sidoarjo, Thursday (19/11). The hexapod creation to withstand abrasion caused by the drain of the Kali Porong water flow, as well as the anticipation of water lubrication when the rain falls. PHOTO ANTARA/Eric Ireng/Koz/hp/09.