フランジを付けたようになった管付属品を緩めること

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{"cid":"108540","pid":"21198232","pimg_url":"\/\/img1.tradegrowthhub.com\/03\/61\/0865ae08198c\/product\/70563509_s-w400xh400.jpg","name":"ISO 2531 EN 545 EN598 Ductile Iron Loosing Flanged Pipe Fittings","attrs":{"\u4fa1\u683c":"Negotiable","MOQ":"1.0 Tons","\u7d0d\u671f":"Negotiable","\u30d6\u30e9\u30f3\u30c9":"Loosing Grooved Flanged Fittings"}}

{"cid":"108540","pid":"21198216","pimg_url":"\/\/img1.tradegrowthhub.com\/03\/61\/0865ae08198c\/product\/70563431_s-w400xh400.jpg","name":"Ductile Iron Loosing Flanged Pipe Fittings For Water Or Sewerage Pipeline","attrs":{"\u4fa1\u683c":"Negotiable","MOQ":"1.0 Tons","\u7d0d\u671f":"Negotiable","\u30d6\u30e9\u30f3\u30c9":"Loosing Grooved Flanged Fittings"}}

{"cid":"108540","pid":"21198206","pimg_url":"\/\/img1.tradegrowthhub.com\/03\/61\/0865ae08198c\/product\/70563361_s-w400xh400.jpg","name":"high quality product ductile iron loosing flanged pipe fittings New products on the Chinese market","attrs":{"\u4fa1\u683c":"Negotiable","MOQ":"1.0 Pieces","\u7d0d\u671f":"Negotiable"}}

{"cid":"108540","pid":"21198193","pimg_url":"\/\/img1.tradegrowthhub.com\/03\/61\/0865ae08198c\/product\/70563308_s-w400xh400.jpg","name":"ISO 2531 EN 545 EN598 Ductile Iron Loosing Flanged Pipe Fittings For Pipeline","attrs":{"\u4fa1\u683c":"Negotiable","MOQ":"1.0 Tons","\u7d0d\u671f":"Negotiable","\u30d6\u30e9\u30f3\u30c9":"Loosing Flanged Pipe Fittings"}}