1. Exchangeability
You will not have to exchange with stainless steel fittings, stainless steel tee fittings, and ferrule type fittings in the future. If you change, then 32*3.5 and 34*4.5 should not be selected. Because the ferrule type joints are all metric and inch, and there are series products.

2. Weldability
The thickness of the welding wall thickness of stainless steel joints and seamless steel pipes determines the difficulty factor of welding. The thinner the wall, the higher the requirements for the welder. If you have the opportunity to look at the size of the welded joint, sometimes you find that some welds are very wide after welding. That is, the level of the welder is not good, and the seamless steel pipe will be burned and leaked without welding. In order to waterproof and plug leaks, it is very large. In addition, hand-made electric welding is not allowed to weld the hydraulic press pipeline immediately, which is why the company that fools people does so well. For the seamless steel pipe of the caliber, it is a argon arc welding machine. Large-diameter seamless steel pipes are covered by lap welding in argon arc. Some companies use electric welding to immediately weld and then inform the engineering supervision that the compressive strength of the argon arc is insufficient. In fact, it's all bullshit, and it's all done for convenience.





3. Pickling
The welded seamless steel pipe must be pickled, the purpose is to remove the metal material residues such as welding oxide scale inside. acid washed. The commodity circulation channel of the material is changed, and the stability of the system software is jeopardized. After working for a long time, the welding scab will be brought to the system software, so manual welding is not allowed.

4. String oil flush
After pickling, use the working substance or the substance used for oil, and use the flushing station to flush the pipeline, so that the pipeline can achieve the precision of the technical standard. The time can be big or small, just look at the actual effect of pickling after your soldering.

5. In addition, there is an online pickling method
It is a combination of pickling and string oil flushing. However, the actual effect is not very good. The system software and pipelines with high requirements cannot be used in this way as much as possible, which is fooling people. There is also a way to use a general pump (do not use an acid-resistant pump), use a string of oil substances, and add organic chemical powder to it. It can not only pickle off the residue, but also flush the pipeline, and the actual effect is average. These two types of connectors have advantages and disadvantages, and the use of them is generally determined by the customer and selected according to the specific situation. This element is more, and I look forward to helping you. "