The Difference Between Hot Rolled Steel Pipe And Cold Rolled Steel Pipe and Welded Steel Pipe

Hot rolled steel pipe, although also belongs to a steel pipe products, but compared with ordinary products seem to have a variety of difficult to replace the advantages, such as it can destroy the casting organization of the ingot through the ingot to refine the grain, and can eliminate microstructure defects, so that the steel can have good mechanical properties, in addition to the market's rich and colorful manufacturers price, size and specifications also help to meet the needs of consumers with different needs, so that we can have a high level of product service.

1, the difference between hot rolled steel pipe and cold rolled steel pipe

1) Cold rolled seamless steel pipe is often small diameter, hot rolled seamless steel pipe is often large diameter.

2) The precision of cold rolled seamless steel pipe is higher than that of hot rolled seamless steel pipe, and the price is also higher than that of hot rolled seamless steel pipe.

3) Hot rolled seamless steel pipe is divided into general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, geological steel pipe and other steel pipe.

4) Cold rolled (dial) seamless steel pipe in addition to general steel pipe, low and medium pressure boiler steel pipe, high pressure boiler steel pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, other steel pipe, including carbon thin-walled steel pipe, alloy thin-walled steel pipe, stainless thin-walled steel pipe, profiled steel pipe.

5) Cold rolled (dial) seamless steel pipe in addition to general steel pipe, low and medium pressure boiler pipe, high pressure boiler pipe, alloy steel pipe, stainless steel pipe, petroleum cracking pipe, other steel pipe, but also includes carbon thin-walled steel pipe, alloy thin-walled steel pipe, stainless thin-walled steel pipe, shaped steel pipe.

2, hot rolled steel pipe, welded steel pipe difference

1. Appearance, seamless steel pipe and welded steel pipe difference in the welded pipe wall has welded rib, while the seamless does not.

2. Seamless pipe pressure is higher, welded pipe is generally about 10 MPa, now welded pipe have to do seamless processing.

3. Seamless steel pipe is rolled in a molding. Welded steel pipe needs to be rolled and then welded, generally spiral welded and straight welded. Performance seamless pipe to be better, of course, the price is also higher.

Steel pipe is a kind of hollow long steel, a large number of used as a pipeline to transport fluids, such as oil, natural gas, water, gas, steam, etc., in addition, in the bending and torsion strength of the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. Also commonly used for the production of various conventional weapons, gun barrels, shells, etc..