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J55钢质的φ270管坯经火焰切割后,在其端部产生严重裂纹,经过对切割工艺和工作环境的改进,使端裂现象得到了控制.
After the flames were cut by flame, the J55 steel φ270 tube had severe cracks at its ends. After the cutting process and the working environment were improved, the cracked end was controlled.