標準編號:	GB/T 15574-2016
中文名稱:	鋼產品分類
英文名稱:	Steel products classification
中標分類:	H40    鋼鐵產品綜合
行業分類:	GB    國家標準
ICS分類:	77.140.01 77.140.01    鋼鐵產品綜合 77.140.01
發布機構:	中華人民共和國國家質量監督檢驗檢疫總局 中國國家標準化管理委員會
發布日期:	2016-02-24
實施日期:	2017-1-1
標準狀態:	valid
替代舊標準:	GB/T 15574-1995 鋼產品分類
翻譯語言:	英文
文件格式:	PDF
中文字符數:	33000 字
翻譯價格(元):	470.0
交付時間:	付款后 1 個工作日

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

鋼產品分類 1 范圍 本標準規定了按照生產工序、外形、尺寸和表面狀態對鋼產品進行分類的基本準則。 本標準適用于按照生產工序、外形、尺寸和表面狀態對鋼產品進行分類。 2 分類 鋼產品通常分為四大類： a) 液態鋼(見第3章)； b) 鋼錠和半成品(見第4章)； c) 軋制成品和最終產品(見第5章)； d) 其他產品(見第6章)。 3 液態鋼 通過冶煉或直接熔化原料而獲得的液體狀態鋼，用于鑄錠或連續澆注或鑄造鑄鋼件。 4 鋼錠和半成品 4.1 鋼錠 將液態鋼澆注到具有一定形狀的錠模中得到的產品。鋼錠模的形狀應與經熱軋或鍛制加工成材的形狀近似。 用于軋制型材的鋼錠的橫截面可以是方形、矩形(寬厚比小于2)、多邊形、圓形、橢圓形以及各種異形。 用于軋制板材的扁鋼錠的橫截面為矩形且鋼錠寬厚比不小于2。 為進一步加工的需要，不改變鋼錠原來的分類，還可以做如下處理： a) 用研磨工具或噴槍等全部清理表面缺陷； b) 剪切頭尾或剪切成便于進一步加工的長度； c) 表面清理后剪切。 4.2 半成品 由軋制或鍛造鋼錠獲得的，或者由連鑄獲得的產品。半成品通常供進一步軋制或鍛造加工成成品用。 這些半成品的橫截面可為各種形狀(見4.2.1～4.2.8)；橫截面的尺寸沿長度方向是不變的，其公差相對于成品更大一些，棱角更圓鈍一些。半成品的側面允許有輕微的凹入或突出，以及軋制、鍛造或連鑄痕跡，并可使用切削、火焰重熔或修磨等方法進行局部或全部的清理。 4.2.1 方形橫截面半成品 4.2.1.1 大方坯 邊長不小于200mm。 4.2.1.2 方坯 邊長小于200mm，不小于50mm。 4.2.2 矩形橫截面半成品 4.2.2.1 大矩形坯 橫截面積不小于40000mm2，寬厚比小于2的半成品。 4.2.2.2 矩形坯 橫截面積不小于2500mm2，小于40000mm2，寬厚比小于2的半成品。 4.2.3 板坯 厚度不小于50mm，寬厚比不小于2的產品。 4.2.4 圓坯 圓形橫截面的連鑄、軋制或鍛造半成品。 4.2.5 管坯 用于生產鋼管的半成品，橫截面可以為圓形、方形、矩形或多邊形。 4.2.6 異型坯 用于生產型鋼以及經預加工成型的半成品，橫截面積通常大于2500mm2。 4.2.7 VAR鋼錠 使用真空電弧重熔(VAR)爐熔煉金屬原料、重熔鋼錠或鋼坯，得到的圓形鋼錠或鋼坯的半成品。 4.2.8 ESR鋼錠 使用電渣重熔(ESR)爐熔煉金屬原料、重熔鋼錠或鋼坯，得到的圓形鋼錠或鋼坯的半成品。 5 軋制成品和最終產品 5.1 扁平產品 矩形橫截面產品，其寬度遠遠大于厚度。 注：表面通常是光滑的，除特定產品，如；花紋板，具有規律性凸起或鋸齒狀表面圖案。 5.1.1 無涂層扁平產品 無任何涂層或表面處理的扁平產品。為防銹或機械損傷而進行簡單涂層，如鈍化、有機保護層、紙、油和漆，這樣的扁平產品也定義為無涂層扁平產品。 5.1.1.1 熱軋無涂層扁平產品 熱軋半成品或熱軋鋼錠得到的扁平產品。熱軋無涂層扁平產品包含經過輕微冷平整(一般變形量小于5％)的產品。 5.1.1.1.1 寬扁鋼 公稱寬度大于150mm，不大于1250mm，公稱厚度通常大于4mm，一般直條交貨而不成卷交貨，邊部帶有棱角；寬扁鋼經四邊熱軋(或用箱型孔)或從更寬的扁平成品經剪切或火焰切割而獲得。 5.1.1.1.2 熱軋薄板和厚板 邊緣可自由寬展，以扁平狀供貨，一般為方形或矩形，公稱寬度不小于600mm，也可為其他形狀，如環形或按圖紙交貨。邊部可以是軋制邊、剪切邊、氣割邊或切削邊。成品可以預彎狀態交貨。公稱厚度小于3mm為熱軋薄板，公稱厚度不小于3mm為熱軋厚板。 熱軋薄板和厚板可按下列方法生產： a) 在可逆軋機上直接軋制(這種產品一般稱為單軋鋼板)，或在可逆軋機上軋制的原板上剪切下來； b) 在熱軋寬鋼帶上剪切下來，這種產品一般稱為熱軋薄板或厚板。 5.1.1.1.3 熱軋鋼帶 經熱軋后，或再經酸洗、退火，卷成卷狀交貨的產品。 經過軋制，鋼帶邊緣會產生輕微凸起，可剪切邊緣或將寬鋼帶縱切后交貨。開卷并橫切后，熱軋鋼帶可作為定尺或薄板交貨。 熱軋鋼帶進一步劃分為： a) 熱軋寬鋼帶：公稱寬度不小于600mm； b) 縱切熱軋寬鋼帶：軋制后公稱寬度不小于600mm，切邊后公稱寬度小于600mm； c) 熱軋窄鋼帶：軋制后公稱寬度小于600mm。 5.1.1.2 冷軋無涂層扁平產品 經冷軋后，斷面面積減少不小于25％的產品。對于寬度小于600mm的扁平產品以及某些特殊質量鋼，可以包括斷面面積減少小于25％的產品。 5.1.1.2.1 冷軋薄板和厚板 邊緣可自由寬展，以扁平狀供貨，一般為方形或矩形，寬度不小于600mm，也可為其他形狀，如環形或按圖紙交貨。邊緣可以是軋制、剪切、氣割或刨削。厚度小于3mm的為冷軋薄板，厚度不小于3mm的為冷軋厚板(電工鋼除外)。 5.1.1.2.2 冷軋鋼帶 經冷軋后，或經酸洗、退火后，以卷成卷狀交貨的產品。 經過軋制，鋼帶邊緣會產生輕微凸起，可剪切邊緣或將寬鋼帶縱切后交貨。開卷并橫切后，冷軋鋼帶可作為定尺或薄板交貨。 冷軋鋼帶進一步分為： a) 冷軋寬鋼帶：公稱寬度不小于600mm； b) 縱切冷軋寬鋼帶：軋制后寬度不小于600mm，切邊后公稱寬度小于600mm； c) 冷軋窄鋼帶：軋制后公稱寬度小于600mm。 5.1.2 電工鋼 用于電機的磁路中，具有磁性能的鋼。 電工鋼供貨形式為冷軋薄板或冷軋鋼帶，通常公稱厚度小于2mm，公稱寬度不大于1500mm；也可為公稱厚度為1.5mm～5mm的具有特定力學和磁性能的熱軋扁平產品。 5.1.2.1 晶粒無取向電工鋼 非合金鋼及含硅或含硅鋁的合金鋼，其磁性能基本上各向同性，即磁性能沿軋制方向和垂直軋制方向基本相同。 晶粒無取向電工鋼可按下列方式交貨： a) 半工藝狀態交貨，用戶根據推薦的熱處理制度對材料退火后可達到規定的總損耗； b) 全工藝狀態交貨，達到規定的總損耗，產品可不涂層或在單面或雙面涂絕緣涂層。 5.1.2.2 晶粒取向電工鋼 含硅的合金鋼，磁性能各向異性，其晶粒組織在軋制方向表現出優良的磁性能。產品雙面涂絕緣涂層交貨。 5.1.3 包裝用鍍錫和相關產品 5.1.3.1 原板 經過一次或二次冷軋，以鋼帶或薄板形式交貨的非合金低碳鋼。一次冷軋原板的厚度范圍通常為0.15mm～0.60mm，二次冷軋原板的公稱厚度通常范圍為0.12mm～0.36mm。 原板通常用來制造鍍錫板或電解鍍鉻板(ECCS)，但也可制造用于特定包裝的產品，在這種情況下，產品應涂漆。 5.1.3.2 鍍錫板 經過一次或二次冷軋，并通過連續電解法雙面鍍錫的以鋼帶或薄板形式交貨的非合金低碳鋼。一次冷軋鍍錫板的供貨厚度范圍通常為0.15mm～0.60mm，二次冷軋鍍錫板的厚度范圍為0.12mm～0.36mm。鍍錫板供貨時一般經過鈍化處理，并在表面涂油，且應適于涂漆和/或印花。 5.1.3.3 電鍍鉻、氧化鉻鋼板 經過一次或二次冷軋，通過陰極作用在基板的兩面鍍上金屬鉻雙層膜，內層為金屬鉻，外層為氫鉻氧化物或氫氧化物，以鋼帶或薄板形式交貨的非合金低碳鋼。電鍍鉻鋼板供貨時一般在表面涂油，且應便于涂漆和/或印花。 5.1.4 熱軋或冷軋扁平鍍層產品 除5.1.1、5.1.2和5.1.3定義以外的具有永久性鍍層的熱軋或冷軋產品，包括： a) 雙面鍍層，包括： ——兩面鍍層厚度相同； ——兩面的鍍層厚度(涂層)不同。 b) 僅單面鍍層。 5.1.4.1 金屬鍍層鋼板和鋼帶 有金屬鍍層(如：鋁、鋅、硅)的鋼板和鋼帶。 5.1.4.1.1 熱鍍金屬鍍層鋼板和板帶 通過熱浸在熔融槽中形成金屬鍍層的扁平產品，由鍍層總重量(g/m2)來描述。 5.1.4.1.1.1 鍍鋅鋼板和鋼帶 熱浸鍍鋅金屬的鋼板和鋼帶。鋅層總重量通常為60g/m2～700g/m2，鍍層可以呈鋅花或無鋅花。鍍鋅后，表面可用鉻酸鹽、磷酸鹽鈍化處理，也可加釩、鈦或釩鈦作表面防護，但這些表面處理不改變該產品作為熱鍍鋅鋼板和鋼帶的分類。 5.1.4.1.1.2 鍍鋁鋅鋼板和鋼帶 熱浸鍍鋁鋅金屬的鋼板和鋼帶，鍍層總重量通常為80g/m2～450g/m2，根據鋁含量分為： ——鋁鋅合金(鋁含量不小于50％)； ——鋅鋁合金(鋁含量大于3％但小于50％)。 5.1.4.1.1.3 鍍鋁或鋁硅合金鍍層鋼板和鋼帶 熱浸鍍鋁或鋁硅合金金屬的鋼板和鋼帶。鍍層總重量通常為40g/m2～300g/m2。 5.1.4.1.1.4 鉛錫合金鍍層鋼板和鋼帶 熱浸鍍鉛錫合金金屬的鋼板和鋼帶。鍍層總重量不小于120g/m2。 5.1.4.1.2 電解金屬鍍層鋼板和鋼帶 電解金屬鍍層的扁平產品，由鍍層單面厚度(μm)來描述。 5.1.4.1.2.1 電鍍鋅鍍層鋼板和鋼帶 電鍍鋅鍍層的鋼板和鋼帶，鍍層的單面厚度通常為1μm～10μm。這個鍍層無鋅花。鍍鋅后，表面可用鉻酸鹽、磷酸鹽鈍化處理，也可加釩、鈦或釩鈦作表面防護，但不改變該產品作為熱鍍鋅扁平產品的分類。 5.1.4.1.2.2 電鍍鋅鎳鍍層鋼板和鋼帶 電鍍鋅鎳合金鍍層的鋼板和鋼帶，鍍層的單面厚度通常為1μm～8.5μm。 5.1.4.1.2.3 電鍍鉛錫鍍層鋼板和鋼帶 電鍍鉛錫合金鍍層的鋼板和鋼帶，鍍層的單面厚度通常為2.5μm～10μm。 5.1.4.2 有機涂層鋼板和鋼帶 在裸露的或有金屬鍍層的(如鍍鋅層)鋼板或鋼帶的表面涂上有機材料或有機材料與金屬粉末的混 合物。有機涂層可通過以下任一種連續工藝獲得： a) 涂上一層或多層涂料或其他類型的產品，經干燥后，其涂層的厚度根據產品特性可以為每面2μm～400μm； b) 通過使用一層粘附薄膜，可以在薄膜上涂一層有機涂料，也可不涂。涂層可以有不同的表面花紋，涂層的單面厚度通常為35μm～500μm。 5.1.4.3 無機涂層鋼板和鋼帶 具有無機材料涂層的鋼板和鋼帶，如搪瓷。 5.1.5 壓型鋼板 鋼板通常由鍍層薄板制成，但也可由非鍍層薄板制成。從橫截面上看寬度明顯大于高度，見圖1。其中圖1a)為波紋板，即產品表現為大或小的縱向紋路，主要用于覆蓋、鋪設(地板或屋頂)；圖1b)為肋板，即有矩形或梯形縱向肋的產品。