gas pressure welding meaning in English

加压气焊
气体压力焊接
气体压力熔接
气压焊
气焰压接

Standard qualification procedure for gas pressure welding technique
气体压力焊接技术合格鉴定标准程序
Method of inspection for gas pressure welded joint of steel bars for concrete reinforcement
混凝土增强用钢筋加压气焊接头的检查方法
Methods and acceptance criteria of ultrasonic examination for gas pressure welds of reinforcing deformed bars
变形钢筋加压气焊接超声波检验合格标准和方法