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精密無縫管材質20 45 16Mn

精密無縫管 9×0.8 精密無縫管 24×2.5-6精密無縫管 48×3-6 精密無縫管 10×1-3 精密無縫管 25×1-2 精密無縫管 50×2-2.5 精密無縫管 12×1-2 精密無縫管 25×2.5-6 精密無縫管 50×3-6

总数： 3 1 页次：1/1

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q345b精密無縫管

40cr精密無縫管是什么材質

精密無縫管材質20 45 16Mn