... of mud system equipments, also supply series of brake pads for drilling rig PS series Hydraulic Disc Brakes, which ... Ceramic, Semi-metallic, Low metallic, Non-asbestos composite materials and so on as per the request. Except that those brake pads used for ... drilling rig drawworks, we also have brake pads for brand cars, such as ALPINA, ASTON MARTIN, ALPINE, ALFA ROMEO, AUSTIN, BMW ...