The shaft shall be cadmium-plated steel alloy or 316 stainless steel as standard equipment. Optional shaft materials shall be available on request, i.e., titanium, stainless steel, etc.

• 阀杆应该是以镀镉钢合金或316不锈钢作为标准配置。备选的阀杆材料可以根据要求提供，例如，钛，不锈钢，等等。