GB/T 15620
GB/T 15620 (Solid wire electrodes, solid strip electrodes, solid wires and solid rods for fusion welding of nickel and nickel alloys)· GB (China) · 90 materiais
GB/T 15620 (Solid wire electrodes, solid strip electrodes, solid wires and solid rods for fusion welding of nickel and nickel alloys)· GB (China) · 90 materiais