<p><span quot;FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 10.5pt; FONT-WEIGHT: normal; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-weight: bold; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">主要用于</span><span quot;FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-ascii-font-family: "Times New Roman"; mso-hansi-font-family: "Times New Roman"; mso-font-kerning: 1.0pt; mso-bidi-font-family: "Times New Roman"; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">用于煤气、石油、天然气化工钢管的阴较保护及电力电缆的焊接。焊接前，管路表面要除锈、除油。</span></p>