久久精品国产字幕高潮,朝鲜美女黑毛bbw,大屁股熟女一区二区三区,人妻换人妻a片爽麻豆

? ?
Forvacuum Pit Resistance Furnace with Protective Atmosphere
FontSize:【L??M S
Profile:

Function: annealing of welding rotor
Effective workspace: diameter≥4,000mm, length≤13,000mm
Maximum loading capacity of furnace: 300t (250t for rotor)
Furnace temperature uniformity: ±8℃
Heating method: electrical heating
Working vacuum: 133.3Pa
Working pressure: 1.5 x105Pa
Protective atmosphere: nitrogen