delivering long-term erosion control, whilst creating sustainable and environmentally-enhancing schemes. key features rootlok bag permeable needle-punched, non-woven geotextile, heat-bonded on all sides to maintain shape when filled. fabric acts as filtration system, permitting moisture and plant roots...
"cold forming" is the most appropriate description of thread rolling progress. place a round material blank in the between of thread rolling dies. the die thread penetrates the blank surface to form the thread roots and displaces material outward form the crest. this is the basic theory for thread rolling...