钢高温烧结玻璃不锈钢反光板视窗钢油标钢油镜钢油窗钢油位镜钢观油镜

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Sight glass
Body material:steel nichel-plated;
window:high temperature sintering glass;
Reflector:stainless steel; Working temperature:-30 +300
视镜
本体材质：钢；视窗：高温烧结玻璃；
反光板：不锈钢；工作温度：-30 +300