The welding quality of pipeline is closely related to plate temperature in field welding.
石油管道的焊接质量与现场焊接时的板温密切相关。
Arc welding generator used for field welding, sometimes is required to have both dropping and constant voltage external characteristics.
用于野外焊接施工的弧焊发电机,有时需要有下降特性和平特性的双重输出外特性。
Blowout preventing lines shall be connected by threads and standard flanges, and on site welding is forbidden. Field welding is not permitted.
防喷管线应采用螺纹与标准法兰连接,不允许现场焊接。
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