backing weld meaning in Chinese
背焊
打底焊道
底层焊接
底焊焊缝
垫板焊
用垫环的焊缝
Examples
- Backing weld before making main wel back weld
打底焊道 - 14 npt lead pressure transition joint and back welding lead - pressure tube code c12
A2 . - 14npt引压过渡接头及后部焊接引压管代码“ c12 ” - 1 2 - 14npt lead pressure transition joint and back welded lead pressure tube stainless steel
1 2 - 14npt引压过渡头及后部焊接引压管不锈钢 - 1 2 - 14npt lead pressure transition joint and back welded lead pressure pipe stainless steel
1 2 - 14npt引压过渡头及后部焊接引压管不锈钢 - A2 . 14 npt lead pressure transition joint and back welding lead - pressure tube code c12
A2 . - 14npt引压过渡接头及后部焊接引压管代码“ c12 ”