标准编号:	GB/T 15574-2016
中文名称:	钢产品分类
英文名称:	Steel products classification
中标分类:	H40    钢铁产品综合
行业分类:	GB    国家标准
ICS分类:	77.140.01 77.140.01    钢铁产品综合 77.140.01
发布机构:	中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会
发布日期:	2016-02-24
实施日期:	2017-1-1
标准状态:	valid
替代旧标准:	GB/T 15574-1995 钢产品分类
翻译语言:	英文
文件格式:	PDF
中文字符数:	33000 字
翻译价格(元):	470.0
交付时间:	付款后 1 个工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 15574-1995 Steel product classification and definitions. The following main technical changes have been made with respect to GB/T 15574-1995: ——In the classification, "initial product", "forged bar steel" and "other product classification of steel” are deleted, "liquid steel” is added, and "semi-finished product" is modified to "ingots and semi-finished product" (see clause 2; clause 2 of Edition 1995); ——For rolled finished products and end products, "General requirements" is deleted (see clause 5; 6.1 of Edition 1995); ——For ingots and semi-finished product, round billets, VAR ingot and ESR ingot are added (see clause 4; clause 5 of Edition 1995); ——For metal-coated sheet and strip, aluminum-zinc coated sheet and strip, lead-tin alloy coated sheet and strip (terne plate), electrolytically metal-coated sheet and strip, electrolytically zinc-coated sheet and strip, electrolytically zinc-nickel coated sheet and strip and electrolytically lead-tin coated sheet and strip are added (see 5.1.4.1; 6.3.1.2.1 of Edition 1995); ——For hot finished bars, forged bars and hollow mining drill bars are added (see 5.2.3.2 and 5.2.3.3; 6.2.1.2.1 of Edition 1995); ——For railway materials, products for other rail systems are added (see 5.2.6.1; 6.2.4 of Edition 1995); ——For sheet piling, the hat shape sheet piling, combined walls, cold-formed sheet piling and locking connectors are added (see 5.2.6.2.1; 6.2.5 of Edition 1995); ——For tubular products, the fittings are added; and for welded tubes, submerged arc welded tubes, electric-resistance welded tubes and butt welded tubes are added (see 5.2.9; 6.2.7.1 of Edition 1995); ——The requirements are adjusted for the following categories, including: square blooms, square billets, rectangular blooms, rectangular billets, blank for tubes and pipes, uncoated flat product, hot rolled uncoated flat product, wide flat, hot-rolled sheet and plate, hot-rolled strip, cold-rolled sheet and plate, electrical steel, non-oriented grain electrical steel, grain-oriented electrical steel, electrolytic chromium/chromium oxide coated steel, zinc-coated sheet and strip, aluminum of aluminum-silicon alloy coated sheet and strip, lead-tin alloy coated sheet and strip (terne plate), electrolytically zinc-coated sheet and strip, and heavy railway materials. ——The frame diagrams of the steel products (excluding liquid steel) classification are added (see Annex A); ——The names of steel products are added (see Annex G). This standard has been redrafted and modified in relation to ISO 6929: 2013 Steel products - Vocabulary. This standard is partially changed from ISO 6929: 2013 in structure; the comparison table for clause/subclause numbers in this standard and those in ISO 6929: 2013 are listed in Annex E. Technical changes have been made in this standard with respect to ISO 6929:2013, and marked with perpendicular single line (|) at the margin of relevant clauses; see Annex F for the list of technical changes and their reasons. This standard was proposed by China Iron and Steel Association. This standard is under the jurisdiction of SAC/TC 183 National Technical Committee on Iron and Steel of Standardization Administration of China. The previous edition of this standard is as follows: ——GB/T 15574-1995. Steel products classification 1 Scope This standard specifies the basic criteria for classifying steel products by the production process, shape, dimension and surface condition. This standard is applicable to the classification of steel products by the production process, shape, dimension and surface condition. 2 Classification The steel products are usually divided into four categories: a) liquid steel (see clause 3); b) ingots and semi-finished products (see clause 4); c) rolled finished products and end products (see clause 5); d) other products (see clause 6). 3 Liquid steel Steel in the liquid state ready for pouring and obtained from the direct melting of raw materials, which is used for ingot casting, continuous casting or cast steel castings.   4 Ingots and semi-finished products 4.1 Ingots Products obtained by pouring liquid steel into moulds of a shape appropriate. The shape of ingot moulds shall be similar to that of products processed by hot rolling or forging. The ingots used for the profile to be rolled may have a cross section that is square, rectangular (of width up to twice the thickness), polygonal, round, oval, or shaped; The slab ingots used for the plate to be rolled shall have a rectangular cross section, with a width twice the thickness or over. For the needs of further processing, the following treatments may also be conducted without changing the original classification of ingots: a) cleaning all surface defects with grinding tools or spray guns; b) cutting the head and tail or cutting to a length convenient for further processing; c) cutting after surface cleaning. 4.2 Semi-finished product It refers to the product obtained by rolling or forging steel ingots, or by continuous casting. Semi-finished products are usually used for further rolling or forging into finished products. The cross sections may be of various shapes (see 4.2.1~4.2.8); the cross-sectional dimensions are constant along the length with wider tolerances than those of the corresponding flat or long products and side corners more or less rounded. The side surfaces of semi-finished products are allowed to be slightly convex or concave, retaining rolling, forging, or continuous casting marks and may be partly or totally dressed, e.g. by cutting, flame melting, or grinding. 4.2.1 Semi-finished product of square cross section 4.2.1.1 Square blooms Semi-finished products with a side length of no less than 200mm. 4.2.1.2 Square billets Semi-finished products with a side length of not less than 50mm and less than 200mm. 4.2.2 Semi-finished product of rectangular cross section 4.2.2.1 Rectangular blooms Semi-finished products with a cross section area no less than 40,000mm2 and width-to-thickness ratio less than 2. 4.2.2.2 Rectangular billets Semi-finished products with a cross section area no less than 2,500mm2 and less than 40,000mm2 and width-to-thickness ratio less than 2. 4.2.3 Slabs Products with a thickness no less than 50mm and width-to-thickness ratio no less than 2. 4.2.4 Round billets Semi-finished products by continuous casting, rolling or forging from circular cross section. 4.2.5 Blank for tubes and pipes Semi-finished products for producing steel pipes, the cross section of which may be round, square, rectangular or polygonal. 4.2.6 Blanks for sections Semi-finished products for producing section steel and those formed by pre-processing, the cross section area of which is generally greater than 2,500 mm2. 4.2.7 VAR ingot Semi-finished products of round ingots or billets, which are obtained by melting metal raw materials and remelting ingots or billets in a vacuum arc remelting (VAR) furnace. 4.2.8 ESR ingot Semi-finished products of round ingots or billets, which are obtained by melting metal raw materials and remelting ingots or billets in an electroslag remelting (ESR) furnace.   5 Rolling finished products and end products 5.1 Flat product Product having rectangular cross sections, the width being much greater than the thickness. Note: The surfaces are generally smooth except for certain products, e.g. floor plates, that show regular raised or indented surface patterns. 5.1.1 Uncoated flat product Flat product without any coating or surface treatment. Flat products that have received a simple coating for the purpose of protection from rust or mechanical damage, e.g. passivation, organic coatings, paper, oil, and lacquer, are defined as uncoated flat products. 5.1.1.1 Hot rolled uncoated flat product Flat product manufactured by hot rolling semi-finished products or by hot rolling ingots. Hot-rolled flat products include those that have been subjected to a light cold-rolling pass, normally less than 5% reduction. 5.1.1.1.1 Wide flat Flat product of width over 150 mm up to and including 1,250 mm and nominal thickness generally over 4 mm, supplied in lengths, i.e. not coiled, and the edges are angular; wide flat is obtained by hot rolling on four sides (or in box passes) or shearing or flame cutting the wider flat products.

Foreword i 1 Scope 2 Classification 3 Liquid steel 4 Ingots and semi-finished products 5 Rolling finished products and end products 6 Other products Annex A (Informative) Frame diagrams of steel products (excluding liquid steel) classification Annex B (Informative) Schematic diagram for sheet piling Annex C (Informative) Schematic diagram for cross-section of mining frame sections Annex D (Informative) Schematic diagram for typical heavy sections Annex E (Informative) Comparison between clause numbers in this standard and those in ISO 6929: Annex F (Informative) Technical differences between this standard and ISO 6929: 2013 and the relevant reasons Annex G (Informative) Names of steel products

钢产品分类 1 范围 本标准规定了按照生产工序、外形、尺寸和表面状态对钢产品进行分类的基本准则。 本标准适用于按照生产工序、外形、尺寸和表面状态对钢产品进行分类。 2 分类 钢产品通常分为四大类： a) 液态钢(见第3章)； b) 钢锭和半成品(见第4章)； c) 轧制成品和最终产品(见第5章)； d) 其他产品(见第6章)。 3 液态钢 通过冶炼或直接熔化原料而获得的液体状态钢，用于铸锭或连续浇注或铸造铸钢件。 4 钢锭和半成品 4.1 钢锭 将液态钢浇注到具有一定形状的锭模中得到的产品。钢锭模的形状应与经热轧或锻制加工成材的形状近似。 用于轧制型材的钢锭的横截面可以是方形、矩形(宽厚比小于2)、多边形、圆形、椭圆形以及各种异形。 用于轧制板材的扁钢锭的横截面为矩形且钢锭宽厚比不小于2。 为进一步加工的需要，不改变钢锭原来的分类，还可以做如下处理： a) 用研磨工具或喷枪等全部清理表面缺陷； b) 剪切头尾或剪切成便于进一步加工的长度； c) 表面清理后剪切。 4.2 半成品 由轧制或锻造钢锭获得的，或者由连铸获得的产品。半成品通常供进一步轧制或锻造加工成成品用。 这些半成品的横截面可为各种形状(见4.2.1～4.2.8)；横截面的尺寸沿长度方向是不变的，其公差相对于成品更大一些，棱角更圆钝一些。半成品的侧面允许有轻微的凹入或突出，以及轧制、锻造或连铸痕迹，并可使用切削、火焰重熔或修磨等方法进行局部或全部的清理。 4.2.1 方形横截面半成品 4.2.1.1 大方坯 边长不小于200mm。 4.2.1.2 方坯 边长小于200mm，不小于50mm。 4.2.2 矩形横截面半成品 4.2.2.1 大矩形坯 横截面积不小于40000mm2，宽厚比小于2的半成品。 4.2.2.2 矩形坯 横截面积不小于2500mm2，小于40000mm2，宽厚比小于2的半成品。 4.2.3 板坯 厚度不小于50mm，宽厚比不小于2的产品。 4.2.4 圆坯 圆形横截面的连铸、轧制或锻造半成品。 4.2.5 管坯 用于生产钢管的半成品，横截面可以为圆形、方形、矩形或多边形。 4.2.6 异型坯 用于生产型钢以及经预加工成型的半成品，横截面积通常大于2500mm2。 4.2.7 VAR钢锭 使用真空电弧重熔(VAR)炉熔炼金属原料、重熔钢锭或钢坯，得到的圆形钢锭或钢坯的半成品。 4.2.8 ESR钢锭 使用电渣重熔(ESR)炉熔炼金属原料、重熔钢锭或钢坯，得到的圆形钢锭或钢坯的半成品。 5 轧制成品和最终产品 5.1 扁平产品 矩形横截面产品，其宽度远远大于厚度。 注：表面通常是光滑的，除特定产品，如；花纹板，具有规律性凸起或锯齿状表面图案。 5.1.1 无涂层扁平产品 无任何涂层或表面处理的扁平产品。为防锈或机械损伤而进行简单涂层，如钝化、有机保护层、纸、油和漆，这样的扁平产品也定义为无涂层扁平产品。 5.1.1.1 热轧无涂层扁平产品 热轧半成品或热轧钢锭得到的扁平产品。热轧无涂层扁平产品包含经过轻微冷平整(一般变形量小于5％)的产品。 5.1.1.1.1 宽扁钢 公称宽度大于150mm，不大于1250mm，公称厚度通常大于4mm，一般直条交货而不成卷交货，边部带有棱角；宽扁钢经四边热轧(或用箱型孔)或从更宽的扁平成品经剪切或火焰切割而获得。 5.1.1.1.2 热轧薄板和厚板 边缘可自由宽展，以扁平状供货，一般为方形或矩形，公称宽度不小于600mm，也可为其他形状，如环形或按图纸交货。边部可以是轧制边、剪切边、气割边或切削边。成品可以预弯状态交货。公称厚度小于3mm为热轧薄板，公称厚度不小于3mm为热轧厚板。 热轧薄板和厚板可按下列方法生产： a) 在可逆轧机上直接轧制(这种产品一般称为单轧钢板)，或在可逆轧机上轧制的原板上剪切下来； b) 在热轧宽钢带上剪切下来，这种产品一般称为热轧薄板或厚板。 5.1.1.1.3 热轧钢带 经热轧后，或再经酸洗、退火，卷成卷状交货的产品。 经过轧制，钢带边缘会产生轻微凸起，可剪切边缘或将宽钢带纵切后交货。开卷并横切后，热轧钢带可作为定尺或薄板交货。 热轧钢带进一步划分为： a) 热轧宽钢带：公称宽度不小于600mm； b) 纵切热轧宽钢带：轧制后公称宽度不小于600mm，切边后公称宽度小于600mm； c) 热轧窄钢带：轧制后公称宽度小于600mm。 5.1.1.2 冷轧无涂层扁平产品 经冷轧后，断面面积减少不小于25％的产品。对于宽度小于600mm的扁平产品以及某些特殊质量钢，可以包括断面面积减少小于25％的产品。 5.1.1.2.1 冷轧薄板和厚板 边缘可自由宽展，以扁平状供货，一般为方形或矩形，宽度不小于600mm，也可为其他形状，如环形或按图纸交货。边缘可以是轧制、剪切、气割或刨削。厚度小于3mm的为冷轧薄板，厚度不小于3mm的为冷轧厚板(电工钢除外)。 5.1.1.2.2 冷轧钢带 经冷轧后，或经酸洗、退火后，以卷成卷状交货的产品。 经过轧制，钢带边缘会产生轻微凸起，可剪切边缘或将宽钢带纵切后交货。开卷并横切后，冷轧钢带可作为定尺或薄板交货。 冷轧钢带进一步分为： a) 冷轧宽钢带：公称宽度不小于600mm； b) 纵切冷轧宽钢带：轧制后宽度不小于600mm，切边后公称宽度小于600mm； c) 冷轧窄钢带：轧制后公称宽度小于600mm。 5.1.2 电工钢 用于电机的磁路中，具有磁性能的钢。 电工钢供货形式为冷轧薄板或冷轧钢带，通常公称厚度小于2mm，公称宽度不大于1500mm；也可为公称厚度为1.5mm～5mm的具有特定力学和磁性能的热轧扁平产品。 5.1.2.1 晶粒无取向电工钢 非合金钢及含硅或含硅铝的合金钢，其磁性能基本上各向同性，即磁性能沿轧制方向和垂直轧制方向基本相同。 晶粒无取向电工钢可按下列方式交货： a) 半工艺状态交货，用户根据推荐的热处理制度对材料退火后可达到规定的总损耗； b) 全工艺状态交货，达到规定的总损耗，产品可不涂层或在单面或双面涂绝缘涂层。 5.1.2.2 晶粒取向电工钢 含硅的合金钢，磁性能各向异性，其晶粒组织在轧制方向表现出优良的磁性能。产品双面涂绝缘涂层交货。 5.1.3 包装用镀锡和相关产品 5.1.3.1 原板 经过一次或二次冷轧，以钢带或薄板形式交货的非合金低碳钢。一次冷轧原板的厚度范围通常为0.15mm～0.60mm，二次冷轧原板的公称厚度通常范围为0.12mm～0.36mm。 原板通常用来制造镀锡板或电解镀铬板(ECCS)，但也可制造用于特定包装的产品，在这种情况下，产品应涂漆。 5.1.3.2 镀锡板 经过一次或二次冷轧，并通过连续电解法双面镀锡的以钢带或薄板形式交货的非合金低碳钢。一次冷轧镀锡板的供货厚度范围通常为0.15mm～0.60mm，二次冷轧镀锡板的厚度范围为0.12mm～0.36mm。镀锡板供货时一般经过钝化处理，并在表面涂油，且应适于涂漆和/或印花。 5.1.3.3 电镀铬、氧化铬钢板 经过一次或二次冷轧，通过阴极作用在基板的两面镀上金属铬双层膜，内层为金属铬，外层为氢铬氧化物或氢氧化物，以钢带或薄板形式交货的非合金低碳钢。电镀铬钢板供货时一般在表面涂油，且应便于涂漆和/或印花。 5.1.4 热轧或冷轧扁平镀层产品 除5.1.1、5.1.2和5.1.3定义以外的具有永久性镀层的热轧或冷轧产品，包括： a) 双面镀层，包括： ——两面镀层厚度相同； ——两面的镀层厚度(涂层)不同。 b) 仅单面镀层。 5.1.4.1 金属镀层钢板和钢带 有金属镀层(如：铝、锌、硅)的钢板和钢带。 5.1.4.1.1 热镀金属镀层钢板和板带 通过热浸在熔融槽中形成金属镀层的扁平产品，由镀层总重量(g/m2)来描述。 5.1.4.1.1.1 镀锌钢板和钢带 热浸镀锌金属的钢板和钢带。锌层总重量通常为60g/m2～700g/m2，镀层可以呈锌花或无锌花。镀锌后，表面可用铬酸盐、磷酸盐钝化处理，也可加钒、钛或钒钛作表面防护，但这些表面处理不改变该产品作为热镀锌钢板和钢带的分类。 5.1.4.1.1.2 镀铝锌钢板和钢带 热浸镀铝锌金属的钢板和钢带，镀层总重量通常为80g/m2～450g/m2，根据铝含量分为： ——铝锌合金(铝含量不小于50％)； ——锌铝合金(铝含量大于3％但小于50％)。 5.1.4.1.1.3 镀铝或铝硅合金镀层钢板和钢带 热浸镀铝或铝硅合金金属的钢板和钢带。镀层总重量通常为40g/m2～300g/m2。 5.1.4.1.1.4 铅锡合金镀层钢板和钢带 热浸镀铅锡合金金属的钢板和钢带。镀层总重量不小于120g/m2。 5.1.4.1.2 电解金属镀层钢板和钢带 电解金属镀层的扁平产品，由镀层单面厚度(μm)来描述。 5.1.4.1.2.1 电镀锌镀层钢板和钢带 电镀锌镀层的钢板和钢带，镀层的单面厚度通常为1μm～10μm。这个镀层无锌花。镀锌后，表面可用铬酸盐、磷酸盐钝化处理，也可加钒、钛或钒钛作表面防护，但不改变该产品作为热镀锌扁平产品的分类。 5.1.4.1.2.2 电镀锌镍镀层钢板和钢带 电镀锌镍合金镀层的钢板和钢带，镀层的单面厚度通常为1μm～8.5μm。 5.1.4.1.2.3 电镀铅锡镀层钢板和钢带 电镀铅锡合金镀层的钢板和钢带，镀层的单面厚度通常为2.5μm～10μm。 5.1.4.2 有机涂层钢板和钢带 在裸露的或有金属镀层的(如镀锌层)钢板或钢带的表面涂上有机材料或有机材料与金属粉末的混 合物。有机涂层可通过以下任一种连续工艺获得： a) 涂上一层或多层涂料或其他类型的产品，经干燥后，其涂层的厚度根据产品特性可以为每面2μm～400μm； b) 通过使用一层粘附薄膜，可以在薄膜上涂一层有机涂料，也可不涂。涂层可以有不同的表面花纹，涂层的单面厚度通常为35μm～500μm。 5.1.4.3 无机涂层钢板和钢带 具有无机材料涂层的钢板和钢带，如搪瓷。 5.1.5 压型钢板 钢板通常由镀层薄板制成，但也可由非镀层薄板制成。从横截面上看宽度明显大于高度，见图1。其中图1a)为波纹板，即产品表现为大或小的纵向纹路，主要用于覆盖、铺设(地板或屋顶)；图1b)为肋板，即有矩形或梯形纵向肋的产品。