The steel grating is manufactured according to YB\T4001-1998 and NAAMM standard. The material of all the bearing bars and cross

Steel Grade: carbon and stainless steel;

Standard (steel grating):YB\T4001-1998(China),NAAMM(America),BS4592-1-1995(Britain),

AS1657-1985(Australia);

Specification: custom-built.