Fbutt welding of the carbon steel pipe.
用于各种碳钢钢管的环缝对接。
In order to convenient welding, pipe and the connecting pipe steel is the same.
为了焊接方便，管件与被连接的管子的钢种是相同的。
The result shows that welding quality of steel pipe is improved obviously.
实施结果证明，钢管的焊接质量得到明显的提高。
For butt welding of the carbon steel pipe.
用于各种碳钢钢管的环缝对接。
For butt welding of the carbon steel pipe.
用于各种碳钢钢管的环缝对接。
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