日本无码中出在钱,欧美一级成人网站,黄色毛片免费看片,五区六区久久久久,日韩美女永久网址在线观看

對于鋼材來說，鋼材不止是用于建房中，我們在各種建筑中也隨時可以看到鋼材的身影，對于鋼材的型號很多，下面 濟鋼一級代理商廠家的小編帶大家來看鋼材分類。
For steel, steel is not only used in building, we in all kinds of buildings can always see the figure of the steel, steel for many models, the following Jinan agents manufacturers Xiaobian take you to see the steel classification.
鋼材應用廣泛、品種繁多，參照的標準不同，劃分出的鋼材種類也不同。其主要分類有如下七種：
Widely used in steel, a wide range of products, the standard of reference is different, the types of steel are also different. The main categories are as follows: seven:
1、按品質分類
1, according to quality classification
(1) 普通鋼（P≤0.045%，S≤0.050%）
(1) ordinary steel (P = 0.045%, S = 0.050%)
(2) 優質鋼（P、S均≤0.035%）
(2) high quality steel (P, S = 0.035%)
(3) 高級優質鋼（P≤0.035%，S≤0.030%）
(3) high quality steel (P = 0.035%, S = 0.030%)

2、按化學成份分類
2, according to chemical classification
(1) 碳素鋼：低碳鋼（C≤0.25%）；中碳鋼（C≤0.25-0.60%）；高碳鋼（C≥0.60%）。
(1): carbon steel low carbon steel (C = 0.25%); carbon steel (C = 0.25-0.60%); high carbon steel (C = 0.60%).
(2) 合金鋼：低合金鋼（合金元素總含量≤5%）；中合金鋼（合金元素總含量>5-10%）；高合金鋼（合金元素總含量>10%）。
(2): alloy steel, low alloy steel (alloy element content is less than or equal to 5%); in the alloy (>5-10% alloy element content; high alloy steel (>10%) alloy element content).
3、按成形方法分類： (1) 鍛鋼 (2) 鑄鋼 (3) 熱軋鋼 (4) 冷拉鋼。
3, according to the forming method classification: (1) forged steel (2), cast steel (3), hot rolled steel (4), cold drawn steel.
4、按金相組織分類
4. Classification according to metallographic structure
(1) 退火狀態的：亞共析鋼（鐵素體+珠光體）；共析鋼（珠光體）；過共析鋼（珠光體+滲碳體）；萊氏體鋼（珠光體+滲碳體）
(1) annealed state: hypo eutectoid steel (ferrite + Zhu Guangti); eutectoid steel (Zhu Guangti); eutectoid steel (Zhu Guangti + cementite); bainitic steel (Zhu Guangti + cementite)
(2) 正火狀態的：珠光體鋼；貝氏體鋼；馬氏體鋼；奧氏體鋼。
(2) normalized condition: pearlitic steel; bainite steel; martensitic steel; austenitic steel.
(3) 無相變或部分發生相變的。
(3) without phase change or part of phase change.
5、按用途分類
5. Classification by purpose
(1) 建筑及工程用鋼：普通碳素結構鋼；低合金結構鋼；鋼筋鋼。
(1) building and engineering steel: plain carbon structural steel; low-alloy structural steel; reinforced steel.
(2) 結構鋼
(2) structural steel
(3) 工具鋼：碳素工具鋼；合金工具鋼；高速工具鋼。
(3) tool steel: carbon tool steel; alloy tool steel; high speed tool steel.
(4) 特殊性能鋼：不銹耐酸鋼；耐熱鋼：包括抗氧化鋼、熱強鋼、氣閥鋼；電熱合金鋼；耐磨鋼；低溫用鋼；電工用鋼。
(4) special performance steel: stainless acid resistant steel; heat-resistant steel: including oxidation resistant steel, hot strong steel, air valve steel; electrothermal alloy steel; wear resistant steel; low temperature steel; electrical steel.
(5) 專業用鋼: 如橋梁用鋼、船舶用鋼、鍋爐用鋼、壓力容器用鋼、農機用鋼等。
(5) professional steel: such as bridge steel, shipbuilding steel, boiler steel, pressure vessel steel, agricultural machinery steel and so on.
6、綜合分類：(1)普通鋼 (2)優質鋼
6. Comprehensive classification: (1) ordinary steel (2) high quality steel
7、按冶煉方法分類
7, according to smelting method classification
(1) 按爐種分：a.平爐鋼 b.轉爐鋼 c. 電爐鋼
(1) according to the furnace types: A. steel B. steel C. steel
(2)按脫氧分：沸騰鋼；半鎮靜鋼；鎮靜鋼；特殊鎮靜鋼。
(2) according to deoxidation points: rimmed steel; semi killed steel; killed steel; special killed steel.
我們的熱忱，一如既往！我們的追求，永無止境！我們的服務，精益求精！歡迎來電咨詢!
Our enthusiasm, as always! Our pursuit is endless! Our service, excellence! Welcome to inquire!