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Weathering Steel can be exposed to the atmosphere without painting. It begins to rust in the same way as ordinary steel. But soon the alloying elements in it cause a protective surface layer of fine-textured rust to form, thereby suppressing corrosion rate.
Carbon steel pipe, carbon welded pipe, carbon seamless steel pipe, API steel pipe using hot rolled steel pipe billet to make heating and piercing, elongating, sizing and straightening, cooling, finally hollow bars finished, this is the type most commonly used. Because it is hot rolled, so cost is lowest, but it is suit for large quantity, for small quantity, have to make cold drawn or round bar piercing. size: outer diameter?32mm- 499mm, wall thickness?4mm- 80mm
Stainless steel pipe is a kind of hollow long round/square steel, stainless steel pipe is divided into seamless steel pipe and welded steel pipe.mainly used in petroleum, chemical industry, medical treatment, food, light industry, mechanical instrument and other industrial pipeline and mechanical structure parts.In addition, in bending, torsional strength at the same time, relatively light weight, so also widely used in the manufacture of mechanical parts and engineering structures..It is also commonly used in the production of various conventional weapons, barrels, shells etc.
Tool steel is used to manufacture cold punching die, hot forging die, die casting die and other types of steel.Mould is the main tool for manufacturing parts in the industrial sectors such as machinery manufacturing, radio instruments, motors and electric appliances.The quality of the die directly affects the quality of the pressure processing technology, the precision of the product output and production cost, and the quality and service life of the die in addition to the reasonable structure design and processing accuracy, mainly affected by the die material and heat treatment.
There are mainly two types: equilateral angle steel and unequal angle steel. Among unequal angle steel, there are unequal edge thickness and unequal edge thickness.
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