... hard metal can be done weldings The marine stainless steel ladders are produced as per one buyer's drawing & requirement ... in metal casting of aluminum, bronze, copper, iron, steel and other metals, in a wide range of size and ... Brass, Carbon steel, Stainless steel, Alloy metal & etc. Equipment:CNC lathe, processing center, miller, grinder, punching machine & etc. marine stainless steel ladders