device and procedure to support the bathroom of welding in welding primapassata orbital head of metal tubes of medium egrandi dimensions.

• 1. 湿喷法轨道交通工程中等强度混凝土结构耐酸雨修复材料 [P] . 中国专利： CN110655370B . 2021.11.23
• 2. 湿喷法轨道交通工程中等强度混凝土结构耐酸雨修复材料 [P] . 中国专利： CN110655370A . 2020-01-07
• 3. device and method for support of the welding bath first walked into the orbital welding of head of metal tubes of medium and large size. [P] . ITTO930829A1 . 1995-05-06

  机译： 支撑熔池的装置和方法首先进入中型和大型金属管头的轨道焊接。

• 4. Device and method for support of the first-pass welding bath in the orbital welding of heads of metal pipes of medium and large size [P] . IT1261332B . 1996-05-14

  机译： 中型和大型金属管头的轨道焊接中首过焊槽的支撑装置和方法

• 5. device for welding coupler improved orbital head of metal tubes of medium and large size. [P] . IT1288734B1 . 1998-09-24

  机译： 中大型金属管耦合器改进轨道头的焊接装置。

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