Rus / Eng / Tur

Shaped rolling

SHAPED ROLLING INCLUDES THE FOLLOWING TYPES OF METAL:

General (mass) consumption

The angle rolling

Channels

Steel I-Beam

 

SPECIAL PURPOSES:

Railway rails

Profiles for shipbuilding, etc.

 

I-BEAMS


I-beam is a steel beam of H-shaped cross-section, manufactured according to STO ASChM 20-93 and GOST 26020-83, GOST 8239-89, GOST 19425-74 from carbon and low alloy steel with chemical composition according to GOST 380, GOST 19281, GOST 27772.

Classification of steel beams:

According to the method of manufacturing the steel I-beams are:

  • Hot-rolled is manufactured by hot rolling a steel billet;

  • The weld is made by welding with special equipment.

 

On the status faces:

  • steel I-beam with the sloped inner faces;

  • steel I-beam with parallel faces.

 

Width of flanges:

  • I-beam with normal shelf width – B;

  • wide I-beam – Sh ;

  • column-beam metal – K.

 

By operational characteristics:

  • steel I-beam for hanging rails – M;

  • beams, metal reinforcement shafts – S.

 

Length:

  • random length;

  • the measured length;

  • the length is a multiple dimensional.

 

I-beams are used in the floors, working platforms, flyovers, bridges, crane beams and other metal structures. Most commonly I-beams are used in long-span structures of industrial buildings.

Hot-rolled steel I-Beams GOST 8239-89

The standard specifies the gauge hot-rolled steel I-beams with a slope facing internal shelves.

Hot-rolled steel I-beams with a slope facing internal shelves on accuracy rolling made:

  • B – the increased accuracy;

  • V – usual accuracy.

The steel hot-rolled I-beams with parallel flange edges, GOST 26020-83

The standard applies to hot-rolled steel I-beams with parallel flanges height from 100 to 1000mm and width of the shelves from 55 to 400 mm.

STEEL CHANNEL

Steel channel is one of the types of structural shapes, which is a continuous metal profile is a U-shaped cross-section, of steel of different grades. It is used to give stiffness and stability to the structures: channels work well in bending and capable of taking some axial load, thereby increasing the strength of the structure as a whole.

Depending on the method of manufacture:

  • hot rolled steel channels — GOST 8240-89;

  • steel channels roll-formed — GOST 8278-83;

  • steel channels roll-formed angle — GOST 8281-80.

 

Depending on the kind of steel:

  • steel channels of ordinary quality;

  • channels low alloy steel channels;

  • carbon steel channels.

 

Depending on precision of rolling:

  • steel channels of  high accuracy – A;

  • steel channels of high accuracy – B;

  • steel channels of conventional precision – V.

The requirements are high and increased accuracy meet highest quality steel channel.

Form and size:

  • steel channels with a slope faces internal shelves – U

  • steel channels with parallel flanges – P;

  • economical steel channels – E;

  • the light channels with parallel flanges – L;

  • special steel channels – S.

 

Depending on specialization (GOST 19425-74):

  • steel channels for overhead rails – M;

  • steel channels for reinforcement of mine shafts – S;

  • steel channels for the automotive industry — S;

  • steel channels for railroad car — V.

 

Roll-formed steel channels are manufactured by roll forming machines, cold rolled, hot rolled or coiled steel of ordinary quality, carbon, qualitative, structural or low-alloy steel according to requirements of GOST 11474-76.

The distinctive features of roll-formed channel are the rounded corners and the same thickness around the perimeter.

There are 2 types of channels bent:

  • with equal length of the shelves (facets) – equal roll-formed channels (GOST 8278-83)

  • unequal (GOST 8281-80).

In contrast hot-rolled channel is not used in load-bearing structures. Often steel roll-formed channel is used as a decorative element for closing communication or a guide for any moving structures.

THE ANGLE ROLLING

Steel angle is a solid profile in cross section which lacks an internal hollow space. Steel angle is  made of commercial quality carbon steel (GOST 380-2005) stamps ST0-ST6, 09G2S, etc. 3SP5 and low-alloy high-strength steel (GOST 19281-89) stamps 08G2S, 12GS, 16GS, etc.

Steel angles are produced according to following standards:

  • hot-rolled steel angle (GOST 8509-93);

  • metal hot-rolled angle (GOST 8510-86);

  • bent equal angle (GOST 19771-93);

  • bent unequal angle (GOST 19772-93).

 

Classification of steel angles:

Depending on the length of the flanges:

  • steel equal angles;

  • steel unequal angles .

 

Depending on manufacturing precision:

  • high precision metal angle – A;

  • high precision steel angle – B;

  • metal area of usual precision metal angle –V.

 

Depending on the method of manufacture:

  • hot-rolled angles;

  • cold-rolled metal angles;

  • bent angles from sheet metal.

 

Depending on feature length:

  • the measured length;

  • the length is a multiple dimensional;

  • the random length.

SPECIAL PRODUCTS

RAILWAY RAILS

Railway rails are steel beams of special sections, laid on sleepers or other supports for the formation of a two-line path that moves the rolling stock of rail transport, urban Railways, specialized staff in mines, quarries, crane equipment.

Rails for railway transportation are made of carbon steel. The most common in the CIS countries the following types of rails: R50, R65, R75.

Railway rails are divided into:

  • according to the types:

    • R50;

    • R65;

    • R65K (for external threads curves plots the path);

    • R75;

  • according to categories of quality:

    • V –  heat-strengthened rails of the highest quality;

    • T1, T2 — heat-strengthened rails;

    • N – rails which are not heat-strengthened;

  • according to the presence of bolt holes:

    • with holes on both ends;

    • without holes;

  • according to the method of steelmaking:

    • M — open-hearth steel;

    • K — of Converter steel;

    • E — from electric steel;

  • according to referring to the source of the blanks:

    • from ingots;

    • from continuously cast billet.

PILE

Pile is metal profile, which is a chute with rounded edges of the side walls (slots) or locks. Piles can be connected in section 2 or 3 of pile. The length of the piles can reach up to 34 meters. In addition to the trough-shaped profile, there is producing the Z-shaped one and flat pile with locks.

Among all the varieties of piles should be allocated pile with Larssen locks. Its advantages include corrosion resistance, convenience and ease of installation. Pile with Larssen locks is embedded in soil piling hammers or sank using the vibratory hammer. Each subsequent pile is plunged into the ground in a special groove on the previous and expanded on the first by 180 degrees. A continuous structure forms, which can be made in the form of a ring. Inside the construction water is pumped and conducted the necessary work. After completion of the work, the pile is removed and can be reused.

SHAFT STAND

The special interchangeable profiles for mine timbering are manufactured according to GOST 18662.

Length: 9 000-12 000 mm

Limit deviations in height: +1,0/-1,5 mm.

Twisting around the longitudinal axis is not allowed.

A wide range of structural shapes is always available in the warehouses of the Company.