GB5310 specifies the technical requirements for seamless steel tubes and pipes for high pressure boilers.

GB5310规定了高压锅炉用无缝钢管的技术要求。

GB 5310 is a Chinese national standard that specifies the technical requirements for seamless steel tubes and pipes for high-pressure boilers. The standard was first issued in 1995 and has since undergone several revisions, with the latest version being GB/T 5310-2017.

GB 5310是中国国家标准，规定了高压锅炉用无缝钢管的技术要求。该标准于1995年首次发布，此后经历了多次修订，最新版本为GB/T 5310-2017。

GB 5310 sets out the classification, code, dimensions, shapes, masses, technical requirements, samples, test methods, inspection rules, packing, marking, and quality certification of seamless steel tubes and pipes used in the manufacture of steam boilers and pipelines operating at high pressures and above.

GB 5310规定了用于制造高压及以上蒸汽锅炉和管道的无缝钢管的分类、代码、尺寸、形状、质量、技术要求、样品、试验方法、检验规则、包装、标记和质量认证。

GB 5310 standard is widely used in various industries, including power generation, manufacturing, and petrochemicals, among others, as it aims to ensure the safety and reliability of high-pressure boilers by establishing strict standards for the production and use of seamless steel tubes and pipes.

GB 5310标准广泛应用于发电、制造和石化等各个行业，因为它旨在通过制定严格的无缝钢管生产和使用标准来确保高压锅炉的安全性和可靠性。

GB5310 sets out the classification, code, dimensions, shapes, masses, technical requirements, samples, test methods, inspection rules, packing, marking and quality certification of the tubes and pipes used in the manufacture of steam boilers and pipelines operating at high pressures and above.

GB5310规定了用于制造高压及以上蒸汽锅炉和管道的管材的分类、代码、尺寸、形状、质量、技术要求、样品、试验方法、检验规则、包装、标记和质量认证。

The standard is also known as GB/T 5310-2017 and it is applicable to various industries that require high pressure boilers, such as power generation, manufacturing, and petrochemicals, among others. GB5310 aims to ensure the safety and reliability of high-pressure boilers by establishing strict standards for the production and use of seamless steel tubes and pipes.

该标准也称为GB/T 5310-2017，适用于需要高压锅炉的各种行业，如发电、制造和石化等。GB5310旨在通过制定严格的无缝钢管生产和使用标准来确保高压锅炉的安全性和可靠性。

GB 5310 is a standard for seamless tubes used in high-pressure steam boilers and pipelines. The main application for GB 5310 tubes is as high-pressure pipeline tubes in boiler projects. These tubes can be used for superheaters, reheaters, and windpipes.

GB 5310是高压蒸汽锅炉和管道用无缝管的标准。GB 5310管材主要应用于锅炉项目中的高压管道。这些管子可用于过热器、再热器和风管。

The GB 5310 standard applies to tubes made from materials such as:GB 5310标准适用于由以下材料制成的管子：

• 10#, 20#, 45#
• 15Mn, 20Mn, 45Mn
• 30Mn2, 20Mn2, 15CrMoG
• 12Cr1Mo1VG, 12CrMoG

The long-term use temperature for GB 5310 20G seamless steel pipes used as headers and steam pipes is ≤ 425 ° C.

GB 5310 20G无缝钢管用作集管和蒸汽管的长期使用温度≤425°C。

Chemical Compositions(%) of GB 5310  GB 5310化学成分（%）

Manufacturing methods制造方法

Steel smelting method炼钢方法
High-quality carbon structural steel and alloy structural steel shall be smelted by electric furnace plus furnace refining, oxygen converter plus furnace refining or electroslag remelting method, and steel refined outside the furnace shall be subjected to vacuum degassing treatment.

优质碳素结构钢和合金结构钢应采用电炉加炉精炼、氧气转炉加炉精炼或电渣重熔法冶炼，炉外精炼的钢应进行真空脱气处理。

10Cr9Mo1VNbN, 10Cr9MoW2VNbBN, 10Cr11MoW2VNbCu1BN, 11Cr9Mo1W1VNbBN and stainless (heat-resistant) steel should be smelted by electric furnace plus furnace refining or electroslag remelting. The steel refined outside the furnace should be vacuum degassed.
10Cr9Mo1VNbN、10Cr9MoS2VNbBN、10Cr11MoW2VNbCu1BN、11Cr9Mo1W1W1VNbBN和不锈钢（耐热）应通过电炉加炉精炼或电渣重熔冶炼。炉外精炼的钢材应进行真空脱气处理。

After consultation between the supplier and the buyer, and indicating in the contract, other higher-required smelting methods may be adopted. When the purchaser specifies a certain smelting method, it should be indicated in the contract.
经供需双方协商，并在合同中注明，可采用其他要求更高的冶炼方法。当买方指定某种冶炼方法时，应在合同中注明。

Manufacturing methods and requirements for tube blanks管坯的制造方法和要求
The tube blank can be produced by continuous casting, die casting or hot rolling (forging).管坯可以通过连铸、压铸或热轧（锻造）生产。
Continuous casting tube blanks shall comply with the provisions of YB/T 4149, in which the level of low-fold structural defects shall not exceed 1; the hot-rolled (forged) tube blanks shall comply with the provisions of YB/T ××××; It is carried out in accordance with the regulations for hot-rolled (forged) tube blanks.

连铸管坯应符合YB/T 4149的规定，其中低折结构缺陷等级不得超过1级；热轧（锻）管坯应符合YB/T××××的规定；按照热轧（锻造）管坯的规定进行。

Manufacturing method of steel pipe钢管制造方法
Steel pipes shall be manufactured by hot rolling (extrusion, expansion) or cold drawing (rolling). Steel pipes of grade 08Cr18Ni11NbFG shall be manufactured by cold drawing (rolling) seamless method.

钢管应通过热轧（挤压、膨胀）或冷拔（轧制）制造。08Cr18Ni11NbFG级钢管应采用冷拔（轧制）无缝法制造。

Delivery status交货状态

The steel pipe shall be delivered in a heat treated condition. The heat treatment system for steel pipes shall comply with the requirements of Table 4. The heat treatment system for steel pipes should be filled in the quality certificate.

钢管应在热处理状态下交付。钢管的热处理系统应符合表4的要求。钢管的热处理系统应填写在质量证书中。

Heat treatment system for steel pipes钢管热处理系统

Mechanical Properties of GB5310  GB5310机械性能

Additional Condition附加条件

• UT(Ultrasonic examination),··超声波检测
• AR(As Hot Rolled only)··AR（仅热轧）
• TMCP(Thermal Mechanical Control Processing)··TMCP（热机械控制处理）
• N(Normalized)·N（标准化）
• Q+T(Quenched and Tempered)·Q+T（淬火和回火）
• Z Direction Test(Z15,Z25,Z35)·Z方向测试（Z15、Z25、Z35）
• Charpy V-Notch Impact Test·夏比V型缺口冲击试验
• The Third Party Test (such as SGS Test)·第三方测试（如SGS测试）
• Coated or Shot Blasting and Painting.·涂层或喷丸和涂漆。

GB 5310 High pressure boiler tube ApplicationGB 5310高压锅炉管应用

• GB5310 20G seamless steel pipes are mainly used for pressure vessels, machinery, pipe fittings, oil and chemical industry.·
• GB5310 20G无缝钢管主要用于压力容器、机械、管件、石油和化学工业。
• GB 5310 High pressure boiler tube Other Name
• GB 5310高压锅炉管其他名称
• GB 5310 High pressure boiler tube, 20G boiler steel pipe, 20G boiler pipe
• GB 5310高压锅炉管20G锅炉钢管20G锅炉管

Boiler tubing is used in these industries:锅炉管用于以下行业：

• Steam Boilers·蒸汽锅炉
• Power Generation·发电
• Fossil Fuel Plants·化石燃料发电厂
• Electric Power Plants·发电厂
• Industrial Processing Plants·工业加工厂
• Cogeneration Facilities·热电联产设施