Oily iron sheets and rolls

oily iron sheets and rolls, Salty Acid, Black, Galvanized, Steel Sheets and Fire Fighting Sheets

After hot rolling, the surface of the sheet has oxide and impurities, and its dimensions are not sufficiently precise. With surface pickling and rolling at ambient temperature, the sheet has a high surface level, a higher dimensional tolerance and higher strength. The product of this process is said cold rolling which is available in both annealed and full-hard versions in market. Annealed sheet at the end of the manufacturing process is used to protect the surface of the sheet and prevent it from again rusting, and to facilitate subsequent production processes on sheets such as tension, some oil is sprayed on the surface of the sheet. This is why the sheet in the Iranian market is also common as an oily sheet, and it is usually more durable and more applicable than the full hard one. Full hard sheet is also used in some cases and is used more as an input material for galvanizing lines. Oily sheets may be used in both coils and sheets on the market, and depending on the final application, the strength and elasticity of the coil are determined. Manufacturers: Mobarakeh Steel Esfahan – Seven Diamonds Industries – West Asia Steel – Cossack – Arcelor Mittal Arcelor Mittal – Posco POSCO

Grade: ST12- ST13- ST14- ST16- ST37- ST44- ST52- SAPH370- SAPH440- HE390D- STW22- SPFC- STW24- S235JR- S235JO


Thickness: from 0.30 mm to 50 mm

ضخامت: از 0.30 میلیمتر تا 50 میلیمتر

Width of rolls: from 800 mm to 1500 mm

عرض رول ها: از 800 میلیمتر تا 1500 میلیمتر

Sheet width: from 1000 mm to 2000 mm

عرض ورق ها: از 1000 میلیمتر تا 2000 میلیمتر

Cut to length: 2000 mm to 8000 mm

طول ورق ها: از 2000 میلیمتر تا 8000 میلیمتر

Application and Usages

Types of sheets

Black Sheets:

the sheets that have building applications and start with the so-called “ST33” quality and end with the ST52. The ST37 sheets are usual in terms of hardness and softness and the lower from ST37, the softer, it would be. In other words, the greater the carbon element in the steel sheets, the harder the sheet, such as ST52. Hot sheets in steel mills are produced directly from sheet ingot (billet) and iron and are the first stages of sheet production. Some steel sheets are in the warm (black) group. Which is elastic. For the body of the ship and heavy machinery, the so-called DD11, DD12 and DD13 as well as STW22 and STW24, which are softer, are used. And others in the hot (black) group, which is hard to produce are used to make pressure pipes and oil reservoirs, etc., with the SPHT1-SPHT2-SPHT3-SPHT4 standards. Also, A285 sheets with GR C (C) grades with 90 A596 GR55 to 90 grades are also used for pressure vessels and high pressure cylinders.

Pickling sheets:

these sheets are produced from hot sheets which are pickled during a process, Surface coals of the sheet and some impurities are taken and the appearance of the sheet becomes shiny, that is, close to the oily sheet. The process by which fats on a sheet that is reached to a desired thickness by hot rolling are removed from the sheet by using chloride-containing acid, is called pickling. The weight of the pickling sheets is like hot rolling sheets (black). Other sheets suitable for oil and gas pipes have the quality of GRB and X42 and X46 and X52 psl 2. Also for shipbuilding, GR.A and NVA are qualified sheets. Some steel sheets are used for rims and chassis that should be anti-abrasive and rugged, which are of SAPH370 SAPH310 to SAPH440 quality. QSTE 380 is also hard and anti-abrasion.

Tin Plate Sheets

sheets with the thickness of 0.16 mm to 0.45 mm, mostly used for cans of tea, canned food, and vegetable oils, coated on a ST12 cold sheet (oily) sheet to protect foodstuffs. Sometimes the two sides of the sheet do not have the same tin (one side 2.8 and the other side 5.6), the side with the high tin is used inside the container and the low tin side is used for outside of container. The tin plates are divided into 3 groups in terms of hardness and softness, namely, Temper 2, which is soft and temper 3, which is typical and temper4 which is hard.

Galvanized sheets:

these sheets are produced from cold sheets, that the sheets during a relatively long process throughout the surface of the sheet exhibit several microns of zinc metal on the surface of the sheet to prevent the sheet from being coated with rust and the more the surface is covered with zinc, the kating of the sheets are higher. Chinese sheets typically have a kating of 100 to 120 and Japanese, Korean and Indian, …sheets, have up to 180 kating.

Usually, galvanized sheets are painted in special furnaces to produce colored sheets. Colored sheets are used in the ceiling of the hall and the Conex and are manufactured in a variety of colors that have the same standard throughout the world. This standard is known as the Ral Color, with over 16 different colors of colored plates being produced: White Refrigerator – Ral 9016, cream-Ral 9010, Red-Ral 3000, Red-Ral 3020, Blue Ral 5015, Carbon Blue – Ral 5018, Orange – Rall 2004 and Ral 2003, Yellow – Ral 1023, Yellow Lime colored – Ral 1028, Purple – Ral 4005, Green – Ral 6024, Dark Green – Ral 1860, Pink – Ral 4003 , Brown- pottery colored – Ral 8004, dark brown 8018.

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