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Process analysis of seamless steel tube and precision pipe

time��2017/11/23 11:01:55��source����visits��

1, seamless steel pipe is characterized by non welded joints, can withstand greater pressure. The product can be very rough as cast or cold cast parts.

2, precision steel pipe is a product in recent years, mainly the inner hole, outer wall size has strict tolerance and roughness.

Characteristics of cold drawn precision steel pipe:


1) smaller outer diameter.

2) high accuracy, small batch production.

3) cold finished products have high precision and good surface quality.

4) the cross section of steel pipe is more complicated.

5) the performance of the steel pipe is superior, and the metal is relatively dense.

The difference between hot rolled precision steel pipe
With the continuous casting tube blank slab or stainless steel tubes hot rolled precision steel as raw material, after reheating furnace heating, descaling into the roughing mill of high pressure water, roughing material by cutting head, tail, and then enter the finishing mill, the implementation of the computer controlled rolling and after rolling through the laminar cooling and coiling machine, coiling become straight hair volume. Hair straightenerrollhead, tail tongue shapeand thefishtail shape, thickness, width of poor accuracy, edgehaswavy, folding, tower and other defects. The coil weight is heavy, and the inner diameter of steel coil is 760mm. Thestraightthroughcutting head cutting, cutting tail, cutting edge and multi pass straightening and leveling finishing line processing, cutting board or heavy volume, which becomes: hot rolled steel plate and flat steel coils, slittingstripand other products. Hot finishing rolling by pickling descaling and oil is made by pickling hot-rolled coils.