封焊焊接在操作上相对容易掌握，而且在管材到货后可立即安排集中焊接，容易组织。不锈钢焊条的根焊和碳钢焊条的填充盖面焊都是非常成熟的焊接工艺，而且封焊完成后形成的坡口能够保证各焊层良好熔合，可避免较多焊接缺陷的产生。在现场应用中组织最简单，利于施工，且施工成本能够降低。
Sealing welding is relatively easy to master in operation, and centralized welding can be arranged immediately after the arrival of pipes, which is easy to organize. The root welding of stainless steel electrode and the filling and covering welding of carbon steel electrode are very mature welding processes, and the groove formed after sealing welding can ensure the good fusion of each welding layer, which can avoid many welding defects. In the field application, the organization is the simplest, which is conducive to the construction, and the construction cost can be reduced.
根焊层（不锈钢层）按照通常不锈钢材料的焊接方法和工艺措施进行焊接，摆幅不宜过大，焊枪对中，保证根部焊缝的背面成形良好。
The root welding layer (stainless steel layer) shall be welded in accordance with the welding method and process measures of normal stainless steel materials. The swing shall not be too large. The welding gun shall be aligned to ensure that the back of the root weld is well formed.
热焊层（过渡层及扩散层）焊接时需要采用相对较大规范，以实现合金元素的均匀过渡以及层间金属的充分熔合。但摆幅不宜过大，避免焊道两侧碳钢的过分熔化。
In order to realize the uniform transition of alloy elements and the full fusion of interlayer metals, a relatively large specification should be adopted in the welding of hot welding layer (transition layer and diffusion layer). However, the swing should not be too large to avoid excessive melting of carbon steel on both sides of the weld bead.
焊条电弧焊焊层（碳钢层）的焊接工艺很成熟，按照常规工艺焊接即可，但要注意焊接参数不宜过大，降低填充焊层向下熔深，尽量减少碳元素向过渡层扩散。
The welding process of the electrode arc welding layer (carbon steel layer) is very mature, so it is OK to weld according to the conventional process, but it should be noted that the welding parameters should not be too large, the penetration of the filling welding layer down should be reduced, and the diffusion of carbon elements to the transition layer should be minimized.