We can see that the molds on the production machines of some welded pipe enterprises are obviously new, but they are rusty. Why? In other words, why do some welded pipe moulds not need to be annealed?

Seeing this, some people may think that there's something to do with the bad mouth, the rusty welded pipe mould and the non annealing. It depends on what kind of pipes are made. The front unit mould of some large pipes does not anneal. Why? Because they are afraid, they are afraid that the stress in the annealing process of the welded pipe mould will be too large, which will cause the cracking of the welded pipe mould, It's a big loss, so they don't anneal, but it's not good. If some steel strips are too hard, the wear of welded pipe die will be great.

No matter the size of the welded pipe mould produced by our pipe rust steel technology, it has to be annealed. Only in this way can we better guarantee the product quality and make the customers feel comfortable. After all, people spend money and our technology has to keep up. We can't be sorry to the customers.

Key words:welded pipe mould

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