Steel material is more popular use in the construction project in all the world for the simple assembly, low cost and long service life. There are too many kinds of steel material like steel pipes, steel plate, omega profile, C channel profile, etc…

Steel is a kind of building material that will not burn. It has the characteristics of earthquake resistance, bending resistance and so on. In practical use, steel can not only increase the load capacity of buildings, but also meet the needs of favorable modeling in architectural design; The defects that concrete and other building materials cannot be bent and pushed are avoided. Steel is widely used in single story, multi-story, skyscrapers, factories, warehouses, waiting rooms and waiting halls. However, as a building material, steel has some unavoidable defects in fire prevention. Its mechanical properties, such as yield point, thrust resistance and elastic modulus, will decrease sharply with the increase of temperature.

The steel omega profile and the C channel profile are made of low carbon steel. The surface is hot-dip galvanized to prevent oxidation. It can also be made of stainless steel. The steel grating has the properties of ventilation, heat dissipation and anti-skid. At same time there are too many kind of C channel sizes and dimensions for different choice and uses.

Profile refers to the solid straight bar with certain section shape and size formed by plastic processing of metal. Profile is an object with certain geometry made of iron or steel and materials with certain strength and toughness through rolling, extrusion, casting and other processes. Profiles include hot-rolled profiles, cold-formed profiles, cold-rolled profiles, cold-drawn profiles, extruded profiles, forged profiles, hot-formed profiles, welded profiles and special rolled profiles. 1. Profile extrusion is the process of producing profiles by extrusion. Hollow profiles are extruded by piercing needle and welding; The solid profile adopts forward extrusion method, reverse extrusion method and combined extrusion method.

Profile refers to the solid straight bar with certain section shape and size formed by plastic processing of metal. Profile is an object with certain geometry made of iron or steel and materials with certain strength and toughness through rolling, extrusion, casting and other processes. Profiles include hot-rolled profiles, cold-formed profiles, cold-rolled profiles, cold-drawn profiles, extruded profiles, forged profiles, hot-formed profiles, welded profiles and special rolled profiles. 1. Profile extrusion is the process of producing profiles by extrusion. Hollow profiles are extruded by piercing needle and welding; The solid profile adopts forward extrusion method, reverse extrusion method and combined extrusion method.

Profile refers to the solid straight bar with certain section shape and size formed by plastic processing of metal. Profile is an object with certain geometry made of iron or steel and materials with certain strength and toughness through rolling, extrusion, casting and other processes. Profiles include hot-rolled profiles, cold-formed profiles, cold-rolled profiles, cold-drawn profiles, extruded profiles, forged profiles, hot-formed profiles, welded profiles and special rolled profiles. 1. Profile extrusion is the process of producing profiles by extrusion. Hollow profiles are extruded by piercing needle and welding; The solid profile adopts forward extrusion method, reverse extrusion method and combined extrusion method.

Profile refers to the solid straight bar with certain section shape and size formed by plastic processing of metal. Profile is an object with certain geometry made of iron or steel and materials with certain strength and toughness through rolling, extrusion, casting and other processes. Profiles include hot-rolled profiles, cold-formed profiles, cold-rolled profiles, cold-drawn profiles, extruded profiles, forged profiles, hot-formed profiles, welded profiles and special rolled profiles. 1. Profile extrusion is the process of producing profiles by extrusion. Hollow profiles are extruded by piercing needle and welding; The solid profile adopts forward extrusion method, reverse extrusion method and combined extrusion method.

Profile refers to the solid straight bar with certain section shape and size formed by plastic processing of metal. Profile is an object with certain geometry made of iron or steel and materials with certain strength and toughness through rolling, extrusion, casting and other processes. Profiles include hot-rolled profiles, cold-formed profiles, cold-rolled profiles, cold-drawn profiles, extruded profiles, forged profiles, hot-formed profiles, welded profiles and special rolled profiles. 1. Profile extrusion is the process of producing profiles by extrusion. Hollow profiles are extruded by piercing needle and welding; The solid profile adopts forward extrusion method, reverse extrusion method and combined extrusion method.

C channel steel: C channel steel is a long strip of steel with a grooved section. The specification expression method, such as 120 * 53 * 5, refers to the channel steel with waist height of 120 mm, leg width of 53 mm and waist thickness of 5 mm, or 12# channel steel. For channel steel with the same waist height, if there are several different leg widths and waist thicknesses, add a BC on the right side of the model to distinguish, such as 25A #25b #25c #, etc. Channel steel is divided into ordinary channel steel and light channel steel. The specification of hot-rolled ordinary channel steel is 5-40#. The specification of hot-rolled flexible channel steel supplied through agreement between the supplier and the buyer is 6.5-30#. Channel steel is mainly used in building structures, vehicles * and other industrial structures, and channel steel is often used with * steel.

Classification of steel according to shape, steel can be divided into four categories: profile, plate, pipe and metal products. In order to facilitate procurement, ordering and management, China currently divides steel into 16 varieties: category and variety description profile heavy rail with a weight of more than 30kg per meter (including crane rail), light rail with a weight of less than or equal to 30kg per meter, large section steel, ordinary steel round steel, square steel, flat steel, hexagonal angle steel, * steel, channel steel, equal and unequal angle steel and deformed steel, etc. According to the size, it is divided into large, medium and small section steel, small section steel, round steel with wire diameter of 5-10mm and wire rod cold-formed section steel. High quality section steel made of steel or steel strip cold-formed, high-quality round steel, square steel, flat steel, hexagonal angle steel and other steel, including heavy rail accessories, axle blank *Steel plate with thickness equal to or less than 4 mm and steel plate with thickness greater than 4 mm. It can be divided into medium plate (thickness greater than 4mm but less than 20mm), thick plate (thickness greater than 20mm but less than 60mm) and extra thick plate (thickness greater than 60mm). The steel strip is also called steel strip. In fact, it is a long and narrow steel sheet supplied in coils. Electrical silicon steel sheet is also called silicon steel sheet or silicon steel sheet pipe. The seamless steel pipe is hot rolled Hot rolling - seamless steel pipe with pipe wall produced by cold drawing or extrusion. Welded steel pipe curls the steel plate or steel strip into shape, and then welded into steel pipe metal products. Metal products include steel wire, steel wire rope, steel strand, etc