... our new development of the claw tortoise-shell net, high temperature resistant lining materials are generally not stereotypes with tortoise ... qualitative, when using, first in the boiler or tortoise shell network welding hot on the wall, then daub tao refractory materials ... j j. 0Cr18Ni9 1Cr18Ni9Ti j, pitch 2cm 1cm thick 6cm, network - - 2.5 cm, thickness of 1mm - 3mm high quality tortoise-shell net