Advantages of U tube heat exchanger
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U tube heat exchanger is characterized by its simple structure,…
How the insolation joints welded?
Insulation joints are mainly used in the sealing protection…
What is the material of N80 in N80 oil casing?
N80 petroleum casing and N80 seamless steel pipe are important…
Basic matters of oil casing
Chemical composition(1)According to SY/T6194-96. The same steel…
The great role of oil casing
In the past, when oil extraction was carried out, simple mechanical…
What’s the oil casing used for?
Oil casing can be divided into different steel grades according…