| Manufacturing shop floor | Strip thickness, mm | Strip width, mm |
| Slitting line No.1 | 0,25 – 3,0 | 36-465 |
| Slitting line No.2 | 0,25 – 2,0 | 9-465 |
Cold-rolled cut steel strip GOST 19851-74
Price:
STRIP TYPES
Cold-rolled steel cut strip GOST 19851-71 is classified:
1) According to standard properties:
• First category;
• Second category;
• Third category;
• Fourth category;
• Fifth category.
2) According to drawing ability:
• H – normal drawing;
• Г – deep drawing;
• ВГ – extra deep drawing;
• СВ – complex drawing;
• ОСВ – extra complex drawing;
• ВОСВ, ВОСВ-Т – super extra complex drawing.
3) According to minimum value of tensile strength:
• К260В, ОК300В, К390В etc.
4) According to surface finish quality:
• Improved finish group (III);
• High finish group (II);
• Extra high finish group (I).
5) According to steel grade:
• CR3;
• CR4.
STEEL GRADES
CR steel strip GOST 19851-74 is produced:
1) of carbon steel of normal quality, tensile strength groups ОК300В and ОК360В; and of carbon steel of high quality, tensile strength groups К260В, К270В, К310В, К330В и К350В as per GOST 16523-97;
2) of low-carbon steel of high quality, steel grades 08u, 08ps, 08kp of chemical composition as per GOST 9045-93.
| Steel group | Tensile strength group/Drawing ability | Steel grade |
| Carbon steel of normal quality (GOST 380-2005) | ОК300В | St1 (kp, ps, sp), St2 (kp, ps, sp) |
| ОК370В | St3ps, St3sp | |
| ОК360В | St3 (kp, ps, sp) | |
| ОК400В | St4 (kp, ps, sp), Spт5ps, St5sp | |
| Carbon steel of high quality (ГОST 1050-2013) | К260В | 08kp |
| К270В | 08ps, 08, 10kp, 10ps, 10 | |
| К330В | 15, 20kp | |
| К310В | 15kp, 15ps | |
| К350В | 20ps, 20 | |
| К390В | 25, 30 | |
| К490В | 35, 40, 45, 50 | |
| Low-carbon steel of high quality | ВОСВ, ВОСВ-Т, ОСВ, СВ | 08u |
| ВГ | 08u, 08kp, 08ps |
Integrated Management System
The company has developed and implemented an integrated management system (IMS), confirmed by the compliance certificate. The certificate confirms that CR strip GOST 19851-74 is produced in accordance with the requirements of GOST ISO 9001-2011 (ISO 9001:2008), GOST R 54934-2012 (OHSAS 18001:2007), GOST (ISO 14001:2004).
CR steel strip GOST 19851-74 is produced at the slitting line No1. of steel strip shop and at the slitting line No.2 of steel profile shop.
Testing methods
Depending on the composition grade testing methods of strip GOST 19851 are regulated by GOST 9045-93 and GOST 16523-97.
Tests are carried out at supplier’s place on samples in accordance with the following table:
| No. | Testing method | Testing standards |
| 1 | Surface roughness test | GOST 2789 |
| 2 | Tension test | GOST 11701-84 |
| 3 | Bending test | GOST 14019 |
| 4 | Decarburization test | GOST 1763 |
| 5 | Hardness test | GOST 9013 or GOST 2999 |
| 6 | Chemical analysis | GOST 22536.0 – GOST 22536.12, GOST 27809 |
Other nondestructive and destructive tests can be carried out on customer’s request.
Surface quality
Surface quality depends on surface finish group.
| Surface finish group | Surface finish properties/ Surface roughness | Surface condition characteristics |
| I | 1.Bright (roughness Ra <= 0.60 mcm) 2.Dull (roughness Ra <= 1.6 mcm) 3.Uneven (roughness Ra > 1.6 mcm) | The surface imperfections are not allowed on the front surface of strip except for separate grooves and scratches less than 20 mm in length. The surface imperfections are not allowed on the bottom surface of strip when its depth exceeds 1/4 of sum of limit tolerances on thickness; contamination spots, annealing color and gray spots are also not allowed. |
| II | Regulated on both sides agreement | The surface defects are not allowed on both surfaces of strip when the depth of defects exceeds half a sum of limit tolerance on thickness; annealing color is not allowed in the places located more than 50 mm from the edges. On the face side enter marks and scratches of more than 50 mm length are not allowed. |
| IIIа | Not regulated | The surface imperfections are not admitted on both surfaces when their depth exceeds half a sum of limit tolerances on thickness. Annealing color is not allowed in the places located more than 200 mm from the edges. |
| IIIб | Not regulated | The surface imperfections are not admitted on both surfaces when their depth exceeds half a sum of limit tolerances on thickness. Annealing colour is allowed on the whole surface of material |
DIMENSIONS
UMC LLC produces CR steel strip GOST 19851-74 of following sizes:
| Strip thickness, mm | Strip width, mm | Inner coil diameter, mm | Outer coil diameter, mm |
| 0,25 – 2,0 | 9 – 36 | 300, 500, 600 | 1500 |
| 0,25 – 3,0 | 36 – 650 | 300, 500, 600 | 1970 |
| 0,25 – 3,0 | 650 – 1500 | 500, 600 | 1970 |
As may be agreed, strips can be produced of sizes not mentioned in GOST 19851-74, ranging from 0,25 to 3,0 thickness and from 9 to 1500 width.
[/su_tab]MECHANICAL PROPERTIES
CR steel strip GOST 19851-74 is produced of standard properties as per GOST 9045-93 or GOST 16523-97.
Mechanical properties as per GOST 9045-93
| Drawing ability (GOST 9045-93) | Yield tensile point, N/mm 2 (kgf/mm 2) σт, maximum | Tensile strength, σ в N/mm2, (kgf/mm2) | Percentage of elongation δ4 , % not less than; strip width, mm | |||
| less than 0,7 mm | from 0,7 to 1,5 мм inc. | from above 1,5 to 2,0 mm inc. | from above 2,0 to 3,9 mm inc. | |||
| ОСВ | 195 (20) | 250-350 (26-36) | 34 | 36 | 40 | 42 |
| CВ | 205 (21) | 250-380 (26-39) | 32 | 34 | 38 | 40 |
| ВГ | – | 250-390 (26-40) | 26 | 28 | 29 | 30 |
Mechanical properties as per GOST 16523-97
| Tensile strength group (GOST 16523-97) | Tensile strength σв , N/mm2 (kgf/mm2) | Percentage of elongation δ4 %, not less than | |
| up to 2mm inc. | from above 2mm | ||
| К260В | 260-380 (27-39) | 26 | 29 |
| К270В | 270-410 (28-42) | 25 | 28 |
| ОК300В | 300-480 (31-49) | 24 | 26 |
| К310В | 310-440 (32-45) | 24 | 27 |
| К330В | 330-460 (34-47) | 24 | 25 |
| К350В | 350-500 (36-51) | 23 | 24 |
| ОК360В | 360-530 (37-54) | 22 | 24 |
| ОК370В | 370-530 (38-54) | 22 | 24 |
| К390В | 390-590 (40-60) | 20 | 21 |
| ОК400В | 400-680 (41-69) | 19 | 21 |
| К490В | 490-720(50-73) | 13 | 14 |
Types of packing
Packing of finished products is carried out in accordance with the requirements of GOST 7566-94, GOST 503-81 and schemes agreed with customer on. According to the normative document a strip coil shall be strapped to a pallet at least in three positions. For corrosion protection strip is coated with a layer of inhibited grease. The delivery of strips without the grease can be agreed with customer individually. Packing can be done both on vertical and horizontal axis.
Vertical axis packing
Coils from slitting line, wound on a coiler with plastic or metal strap, are laid on a wooden pallet. If a strip width is less than 50 mm, there shall be at least one strapping through an inner coil diameter, packaging an inner end of the strip.
Strip coils with wooden fillers between are put together in piles. Strips wound on single coilers can be laid without fillers between the coils.
In accordance with the scheme strips are wrapped in packing paper or film and strapped to a pallet by 4 packaging steel straps. To prevent from frontal surface deformation plastic pallets are put under packaging seals. Depending on a packing scheme products can be packed in paper or metal box.
Horizontal axis packing
Required number of CR strip coils with marking tags are laid on a pallet and strapped to each other by one or two radial packaging steel straps (through inner diameter).
Strip coils are set with wooden fillers. Strips wound on single coilers can be set without fillers between the coils.
In accordance with the scheme strips are wrapped in packing paper and strapped to a pallet by 2, and not less than 4 on forming, radial packaging steel straps.
Описание
С целью обеспечения более эффективного раскроя горячекатаного и холоднокатаного рулонного проката производится лента стальная (штрипс). Данный вид продукции получают двумя способами: прокаткой или продольной резкой листовой рулонной стали. Изготовление ленты холоднокатаной основано преимущественно на резке, поскольку на такой вид ленты цена ниже и желающих купить ее гораздо больше. Лента холоднокатаная по ГОСТ может выпускаться нагартованной, мягкой, нормальной точности и т.д. Цена на ленту определяется исходя из рыночной стоимости на горячекатаный и холоднокатаный прокат.
Область применения
Горячекатаная и холоднокатаная стальная лента находит применение в следующих сферах:
Штрипс горячекатаный используется для производства труб – электросварных и профильных. Лента хомутная, используемая для стяжки труб, также изготавливается из штрипса.
Стальная лента активно используется для производства продукции для строительства. В частности, штрипс для профиля, производство профильных труб +из штрипса.
Лента стальная электротехническая для бронирования кабеля может поставляться оцинкованный, неоцинкованный, нормальной или повышенной точности.
Пружинная холоднокатаная лента производства УМК используется при производстве пружин и инструментов. Более мягкий рулонный штрипс (гибкая стальная лента) используется для штамповки деталей машин и оборудования.
Производство ленты холоднокатаной в значительной мере ориентировано на изготовление упаковочных, обвязочных и бандажных материалов. Обвязка стальной лентой осуществляется специальным оборудованием и инструментами, купить которые можно в нашей компании (подробнее см. «Упаковочный инструмент»).
