Detailed Product Description The main SK series refractory bricks we can offer is SK34 (clay refractory bricks), SK36, SK 38 & SK40( these three item belong ... .225 Other refractory bricks we can offer is Silica refractory brick, clay refractory bricks, high alumina refractory bricks, carbon blocks, mullite bricks, magnesia carbon bricks, mangeisa chrome bricks, SiC bricks and ...