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					配合管道通径
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					阀口台阶(A)
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					管道接触(B)
				 | 
					配合管道通径
				 | 
					阀口台阶(A)
				 | 
					管道接触(B)
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					1/2"~3/4"
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					15
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					15
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					10"
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					50
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					50
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					1"~1-1/4"
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					20
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					20
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					12"~14"
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					100
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					100
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					1-1/2~2-1/2
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					25
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					25
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					16"~20"
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					150
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					150
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					3"
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					40
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					40
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					24"~36"
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					200
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					200
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					4"
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					50
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					50
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					42"
				 | 
					250
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					250
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					6"
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					50
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					50
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					48"~60"
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					300
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					300
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					8"
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					50
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					50
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					72"
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					400
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					400
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					说明:DN600-1800(24"~72")为双包箍。
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