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Q345無縫管是什么?

2020-10-21

Q345E無縫鋼管,Q表示該材料的成熟度,后者345表示該材料的降服值(345)。并且,隨著材料的厚度增加投降值減少。

  對Q345無縫鋼管分類

  Q345A、Q345C、Q345D、Q345E。這是等級的不同,說明了沖擊的溫度不同和沖擊的不同。

  Q345A的等級不影響;Q345B等級是20度常溫影響;Q345C的等級是0度的影響;Q345D等級是-20度的影響;Q345E的等級是-40度的影響。沖擊值也根據沖擊溫度而不同。在板中是低合金。在低合金材料中,這個材料是普遍的。沒有Q345的縫隙的鋼管的過去的東西被稱作:沒有16Mn接續的鋼管。Q345無縫鋼管的外部執行規格為GB709,內部執行規格為GB / T1591-94。

  Q345無縫管屬低合金系列----低合金高強度結構鋼(GB/T1591-1994)。Q345A、B、C、D、E是此類鋼的代表牌號,其中A、B級鋼通常稱16Mn,此種材質為最普通;Q代表的是這種材質的屈服,后面的345,就是指這種材質的屈服值,在345左右。(類同于Q235的命名方法)并會隨著材質的厚度的增加而使其屈服值減小。

  Q345無縫管此類鋼同碳素結構鋼比。具有強度高、綜合性能好、使用壽命長、應用范圍廣、比較經濟等優點。該鋼多軋制成板材、型材、無縫鋼管等,被廣泛用于橋梁、船舶、鍋爐、車輛及重要建筑結構中。

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Q345E seamless steel pipe, q is the maturity of the material, the latter 345 is the surrender value of the material (345). Moreover, with the increase of material thickness, the surrender value decreases.

Classification of Q345 seamless steel pipe

Q345A、Q345C、Q345D、Q345E。 This is the difference of grades, which indicates the difference of temperature and impact.

The grade of Q345A has no influence; the grade of Q345B is the influence of 20 ℃ at room temperature; the grade of Q345C is the influence of 0 degree; the grade of Q345D is the influence of - 20 degree; the grade of Q345E is the influence of - 40 degree. The impact value also varies according to the impact temperature. In the plate is a low alloy. This material is common in low alloy materials. The past of steel pipe without Q345 gap is called: steel pipe without 16Mn connection. The external execution specification of Q345 seamless steel pipe is gb709, and the internal execution specification is GB / t1591-94.

Q345 seamless pipe belongs to low alloy high strength structural steel (GB / t1591-1994). Q345A, B, C, D and E are the representative grades of this kind of steel, of which grade A and B are usually called 16Mn, which is the most common material; Q represents the yield of this material, and the latter 345 refers to the yield value of this material, which is about 345. (similar to the naming method of Q235) and the yield value will decrease with the increase of material thickness.

Q345 seamless pipe this kind of steel and carbon structural steel ratio. It has the advantages of high strength, good comprehensive performance, long service life, wide application range and comparative economy. It is widely used in bridges, ships, boilers, vehicles and important building structures.


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