... or serated c.4000 square meter/week Heavy duty welded steel ... gratingFlooring galvanized steel grating is the most widely used.We have 7 running lines. Our capacity ... stairs, fencing for petroleum, chemical, power plant, waste treatment plant, civil ... 1"x3/16", 1 1/4"x3/16", 1 1/2"x3/16", 1"x 1/4", 1 1/4"x 1/4", 1 1/2"x 1 ... have About 60 sets of machines. And we are still ...