全熔透焊缝不存在包角的问题。
With a full pen weld, the question of "return" doesn't come up.
接管和人孔的焊缝应为穿过容器壁的全熔透。
All welds for nozzles and manways shall be full penetration through the vessel wall.
采用合理的焊前表面处理工艺、全熔透焊接可获得无气孔的焊缝。
The weld can performed free of porosity for full penetration weld when proper surface treatment processing prior to welding is employed.
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