China structure pipe black round pipes

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{"pid":"50552850","cid":"369886","pimg_url":"\/\/img1.b2bforus.com\/eb\/51\/eab3c789f008\/product\/196829521_s-w400xh400.jpg","name":"Forma de secci\u00f3n redonda 31.1mm Tubo sin costura y aceite Astm A53 A106 ms Tubo de acero negro sin costura para estructura de construcci\u00f3n","company_name":"Shandong Zhongyu Weiye Trading Co., Ltd","attrs":{"Precio":"$485.00\/tons 1-49 tons","MOQ":"Negotiable","El tiempo de entrega":"15-21 days","Marca":"zhongyu"}}

{"pid":"50599655","cid":"369982","pimg_url":"\/\/img1.b2bforus.com\/45\/b8\/37dc9a3326ca\/product\/197021718_s-w400xh400.jpg","name":"6 pulgadas ASTM A53 Gr.b ERW Tubo redondo negro de acero al carbono soldado con estructura t\u00e9cnica de grado X80","company_name":"Shandong Zhongsheng Materials Co., Ltd.","attrs":{"Precio":"$550.00\/tons 100-499 tons","MOQ":"1 Ton","El tiempo de entrega":"within 7 days","Marca":"Zhongsheng"}}

{"pid":"44940601","cid":"5300","pimg_url":"\/\/img1.b2bforus.com\/92\/17\/ac6e289f93ea\/product\/171376153_s-w400xh400.jpg","name":"Tubos redondos de acero al carbono de tensi\u00f3n SCH 10 a SCH XXS pintados de negro para estructuras fuertes","company_name":"TOBO STEEL GROUP CHINA","attrs":{"Precio":"Negotiable","MOQ":"Negotiable","El tiempo de entrega":"Negotiable","Marca":"TOBO"}}