KH1B-10-14SR，KH2B-13-20SR，KH2B-13-NPT1/2，KH2B-13-NPT3/4，KH3B-20-NPT1，球阀 KH1B-10-14SR，KH2B-13-20SR，KH2B-13-NPT1/2，KH2B-13-N 图片

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