1: Boiler bututu (ASTM A335 P5, P9, P11, P22, P91, P92 da dai sauransu) Daidaitaccen ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun bututun ƙarfe-karfe don sabis na zafi mai ƙarfi 2: bututun layi (API 5L Gr.B X60 X52 Da dai sauransu) Bututun da ba shi da kyau da ake amfani da shi don sufuri mai inganci Mai, tururi da Wat ...
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