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 Precision tube manufacturer
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Precision tube manufacturer

Contact person: manager Yan
Hand machine: 13603273751
Tel: 13603273751
Address: No.1, North Hehai village, JIANGGUANTUN office, Liaocheng Economic Development Zone, Shandong Province (ANZ logistics company)

What are the causes of cracks in Shandong finish rolling pipe

Release time: September 15, 2020 popularity: one

Finishing tube

What are the causes of the cracks

Hot rolled pipe is a large number of pipes used for conveying fluid, widely used in the manufacture of structural parts and mechanical parts. The following hot-rolled pipe manufacturers to tell you why the hot-rolled pipe through cracks?

1. There are many reasons for the tube blank (round steel), including many cracks, inclusions and air pockets inside. The uneven structure is the reason for the tube blank, so it is necessary to select the round steel produced by a certain scale of manufacturers.

Second, the temperature and process adjustment of piercing should not be ignored. If the piercing temperature is low and the adjustment is improper, the inner tissue of the capillary will be torn.

The annealing temperature of finished product is appropriate. The heating temperature of piercing is 1180 ~ 1230 ℃, which is the temperature of medium carbon alloy steel, and 1230-1250 is suitable. The furnace time is generally 60 minutes above.  

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