考登钢管又名Corten钢，分两大类：Corten A、CortenB，是美国Cu-P系列钢的代表钢种，属于低合金高强耐大气腐蚀结构钢，国内叫做耐候钢。考登钢管主要用于：高含硫烟气中的省煤气、空气预热器、热交换器和蒸发器，用于抵御含硫烟气的结露腐蚀。具有卓越的耐硫离子，耐盐酸及其他酸性腐蚀的能力。螺旋槽管为高效、经济、成熟的传热元件，已经大量使用在各种锅炉的空气预热器产品中。螺旋槽管利用藕节状内壁和螺旋槽导流，强制扰动管内工质，从而提高传热效率。螺旋槽管的传热系数一般可以达到同径光管的1.25倍，使用螺旋槽管可以提高换热设备的效率，减少钢管的用量，缩小换热设备占用的空间，具有良好的经济性和可靠性执行标准
Corten steel pipe, also known as Corten steel, can be divided into two categories: Corten A and CortenB, which are representative steels of U.S. copper-P series steel, belong to low-alloy, high-strength, atmospheric corrosion resistant structural steel, and are called weathering steel in China. Cauden steel pipe is mainly used for saving gas, air preheater, heat exchanger and evaporator in high sulfur flue gas, to resist condensation corrosion of sulfur flue gas. Excellent sulfur ion resistance, hydrochloric acid resistance and other acid corrosion resistance. Spiral grooved tube is an efficient, economical and mature heat transfer element, which has been widely used in various air preheater products of boilers. Spirally grooved tube utilizes the inner wall of lotus root and spiral groove to guide flow, forcing disturbance of working fluid in the tube, thereby improving heat transfer efficiency. The heat transfer coefficient of spirally grooved tubes can generally reach 1.25 times of that of light tubes of the same diameter. The use of spirally grooved tubes can improve the efficiency of heat exchangers, reduce the consumption of steel tubes, and reduce the space occupied by heat exchangers. It has good economy and reliable execution standards. 考登钢管和ND钢管成品执行标准：
Execution Standard for Corden Steel Tube and ND Steel Tube Products:
1. 直接高频电焊钢管：GB/T13793-92
1. Direct High Frequency Welded Steel Pipe: GB/T13793-92
2. 结构无缝钢管：GB/T8162-2008
2. Structural seamless steel tube: GB/T8162-2008
3. 钢管的验收、包装、标志和质量证明书：GB2102-88
3. Acceptance, Packaging, Marking and Quality Certificate of Steel Pipe: GB2102-88
考登钢管和ND钢管材质标准：
Material Standards for Corden Steel Pipe and ND Steel Pipe:
1. 考登钢（Coten-A）：GB4171-84
1. Coten-A: GB4171-84
2. ND钢管（09CrCuSb 即：09铬铜锑）：GB150-98 GB/T6728
2. ND steel pipe (09CrCuSb: 09CrCuSb: 09Chromium, Copper and Antimony): GB150-98 GB/T6728
3. 螺旋槽管：GB3087-82或参照行业标准：DG1017-94
3. Spiral grooved tube: GB3087-82 or reference industry standard: DG1017-94
关于“考登钢，ND钢”简要介绍：
Brief introduction of "Coden Steel, ND Steel":
主要用于：高含硫烟气中的省煤气、空气预热器、热交换器和蒸发器，用于抵御含硫烟气的结露腐蚀。具有卓越的耐硫离子，耐盐酸及其他酸性腐蚀的能力。
Mainly used for saving gas, air preheater, heat exchanger and evaporator in high sulfur flue gas, to resist condensation corrosion of sulfur flue gas. Excellent sulfur ion resistance, hydrochloric acid resistance and other acid corrosion resistance.
考登钢管 钢牌号为Q345GNHL（09CuPCrNi-A/B),其含有少量Cu、P、Cr 、Ni等耐腐蚀性能很强的合金元素，广泛应用于电厂和炼油厂、锅炉厂、石化企业等行业用以抵御含硫腐蚀。 考登钢又名Corten钢，分两大类：Corten A、CortenB，是美国Cu-P系列钢的代表钢种，属于低合金高强耐大气腐蚀结构钢，国内叫做耐候钢。
Q345GNHL (09Cu P Cr Ni-A/B) steel pipe is widely used in power plants, refineries, boilers, petrochemical enterprises and other industries to resist sulfur corrosion. Corten steel, also known as Corten steel, can be divided into two categories: Corten A and CortenB. Corten B is the representative steel of U.S. Cu-P series steel. It belongs to low-alloy, high-strength and atmospheric corrosion resistant structural steel. It is called weathering steel in China.
考登钢管主要用于：高含硫烟气中的省煤气、空气预热器、热交换器和蒸发器，用于抵御含硫烟气的结露腐蚀。具有卓越的耐硫离子，耐盐酸及其他酸性腐蚀的能力。螺旋槽管为高效、经济、成熟的传热元件，已经大量使用在各种锅炉的空气预热器产品中。螺旋槽管利用藕节状内壁和螺旋槽导流，强制扰动管内工质，从而提高传热效率。螺旋槽管的传热系数一般可以达到同径光管的1.25倍，使用螺旋槽管可以提高换热设备的效率，减少钢管的用量，缩小换热设备占用的空间，具有良好的经济性和可靠性。
Cauden steel pipe is mainly used for saving gas, air preheater, heat exchanger and evaporator in high sulfur flue gas, to resist condensation corrosion of sulfur flue gas. Excellent sulfur ion resistance, hydrochloric acid resistance and other acid corrosion resistance. Spiral grooved tube is an efficient, economical and mature heat transfer element, which has been widely used in various air preheater products of boilers. Spirally grooved tube utilizes the inner wall of lotus root and spiral groove to guide flow, forcing disturbance of working fluid in the tube, thereby improving heat transfer efficiency. The heat transfer coefficient of spirally grooved tubes can generally reach 1.25 times of that of light tubes with the same diameter. The use of spirally grooved tubes can improve the efficiency of heat exchangers, reduce the consumption of steel tubes, and reduce the space occupied by heat exchangers. It has good economy and reliability.
高含硫烟气中的省煤气、空气预热器、热交换器和蒸发器，用于抵御含硫烟气的结露腐蚀。具有卓越的耐硫离子，耐盐酸及其他酸性腐蚀的能力。
Gas-saving, air preheater, heat exchanger and evaporator in high-sulfur flue gas are used to resist condensation corrosion of sulfur-containing flue gas. Excellent sulfur ion resistance, hydrochloric acid resistance and other acid corrosion resistance.
产品有：考登钢，ND钢高频电焊钢管；考登管、ND钢钢板、无缝钢管、鳍片钢带等。主要化学成分： C碳 Si硅 Mn锰 Cr铬 <=0.12 0.2~0.4 0.35~0.65 <=1.25 Cu铜 Sb锑 P磷 S硫 0.25~0.45 <=0.12 <=0.05 <=0.035
Products include: Corden steel, ND steel high-frequency welded steel pipe; Cordon steel pipe, ND steel plate, seamless steel pipe, fin steel strip, etc. Main chemical constituents: C-C-Si-Si-Mn-Mn-Cr<=0.120.2~0.40.35~0.65<=1.25 Cu-Sb-Sb-P-P-S 0.25~0.45<=0.12<=0.05<=0.035
