inner face of pipe 管道内表面
HMT relates to temperature difference between inner and outer face of pipe, heating time, wide of heating wire, etc.
该方法处理的优劣，与内外壁面温度差、加热时间、线圈宽度、最大加热温度等因素有关。
Inner flat mirror face of stainless steel weld pipe of Hongyun is famous for precise size, property, surface sanitation and high precision.
“鸿运”不锈钢内整平镜面焊管以尺寸精良、性能、表面卫生精度高而著称。
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