production line 1,corrosion resistant light 2,easy to fix 3,long life time production lineMain technical parameterproduct specifications(mm)ø400 ø600 ø800 ø1000 ø500 ø700 ø900 ø1200Each of these two levels in the specification ,stiffness S1,4KN/M2, S2 ,8KN/M2 Large caliber hollow wall twine pip production eline