摘要:总弯曲度不得大于总长度的.%管坯&mdash&mdash；检查和评估；剥&mdash&mdash；检查和评估；加热和加热系统&mdash&mdash；穿孔&mdash&mdash；酸洗&mdash&mdash；研磨&mdash&mdash；[阅读全文]