Product News
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High-pressure steel pipe production process and its simple maintenance
The main production process of high-pressure steel pipe: billet heating, perforated tube, pipe extension. High-pressure steel pipe rolling, pipe sizing, reducing pipe, cooling and finishing steel or can be said to be heated perforated steel embryo hot rolled pickling spray head cut cold drawn car...Read more -
Difference of Hot-rolled and Cold-drawn
Hot-rolled is based on the slab (mainly billet) as raw material, heated by a roughing mill and finishing mill group made of steel. From finishing the last one out of the hot strip mill by laminar cooling to the set temperature, the coiling machine rolled steel strip coils, steel roll cooled throu...Read more -
disadvantages of welded pipes
Welded steel pipe is continuous online production, the thicker the thickness, the greater the unit and dissolves equipment investment, the less it has economical and practical. The thinner wall thickness, its input-output ratio will be reduced. The advantages and disadvantages of the process of t...Read more -
Coefficient of expansion of precision steel pipe
Coefficient of expansion of precision steel pipe Check the method can be used in the annealing furnace soapy water to wipe each joint crevice, to see whether to run gas; places where gas is most likely to run into the annealing furnace tube and place the tube in place, this place seals are partic...Read more -
Low carbon steel weld ability
Because of the low carbon steel is with low carbon content, manganese, silicon content is also small, therefore, under normal circumstances will not be welded to produce severe hardening tissue or quenched structure. Low carbon steel welding joints plasticity and the impact good toughness, weldin...Read more -
Hot-dip galvanized (galvanizing) defects
Hot-dip galvanized defects: off, scratch, plaque passivation, zinc tablets, the thick side, the marks of the air knife, air knife scratches, exposed steel, inclusions, mechanical damage, the bad performance of steel substrate, wave edge, buckling,substandard size, embossing, the zinc layer thickn...Read more