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400 * 355pvc-u water supply core 16*14 inch upvc plastic reducer DN400 * 350upvc Boshen

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Grey 90*40upvc plastic core filling DN80 * 32pvc-u water supply reducer 3*1-1/4 inch upvc core filling

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Manufacturers supply 12Cr1MoVG15CrMo alloy steel reducer pipe fittings 560 to 360 thick wall large and small head

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