welding distance:330~800mm height:from 50MM to 250mm stripping intensity of welding point:100~140N/CM there is rough and smooth sheet ... .4mm,1.5mm,1.6mm,1.7mm,1.8mmperforated geocell for reforestuses of geocell as below:to stable the bed of railwayto ... sand,beach,river bank and riverbed material:HDPEDistance between welding:330~800mmheight:from 50MM to 250mmstripping intensity of welding point ...