Published: September 14, 2026 | Category: Product News · Standard Guide
Introduction
GB/T 5310 high pressure boiler seamless steel pipe is widely used for boiler heating surfaces, superheaters, reheaters, economizers, headers and high-temperature steam systems. Different grades provide solutions for conventional high-pressure boilers as well as more demanding high-temperature applications.
As a professional seamless steel pipe supplier, SANONPIPE provides GB/T 5310 carbon steel and alloy steel boiler tubes together with international standards including ASTM, ASME, API and EN. We support material selection, quality inspection, processing, documentation and global delivery through one-stop supply services.
❶ What Is GB/T 5310 Standard?
GB/T 5310 specifies technical requirements for seamless steel tubes used in high-pressure and higher-pressure boilers.
The standard focuses not only on room-temperature mechanical properties, but also on the requirements necessary for long-term high-temperature service, including chemical composition, mechanical properties, manufacturing quality and inspection.
GB/T 5310 tubes are commonly used in:
● Power plant boilers
● High-pressure and ultra-high-pressure boilers
● Superheaters and reheaters
● Economizers
● Water-wall systems
● Steam headers
● High-temperature steam piping
● Industrial boilers
● Waste heat and thermal energy systems
Compared with general-purpose carbon steel pipe, boiler tubes require more careful control of material quality and service performance.
❷ Core Grades & Material Characteristics
GB/T 5310 covers carbon steel, carbon-manganese steel and alloy heat-resistant steel grades.
20G
20G is one of the commonly used carbon steel grades for boiler applications.
It offers a good balance of mechanical properties, weldability and cost, making it suitable for conventional boiler heating surfaces and other pressure-bearing components.
Typical applications:
● Economizer tubes
● Water-wall tubes
● Boiler heating surfaces
● Industrial boilers
20MnG & 25MnG
These carbon-manganese grades provide higher strength characteristics than conventional carbon steel and can be selected for specific high-pressure boiler applications.
Typical applications:
● Boiler heating surfaces
● Headers
● High-pressure boiler components
● Industrial thermal systems
15CrMoG
15CrMoG is a Cr-Mo alloy steel grade designed for elevated-temperature service.
Its alloying system provides improved high-temperature strength and oxidation resistance compared with conventional carbon steel.
Typical applications:
● Superheaters
● Reheaters
● High-temperature steam piping
● Boiler headers
● Power generation equipment
12Cr1MoVG
12Cr1MoVG is an important Cr-Mo-V alloy steel grade for high-temperature and high-pressure boiler service.
It offers good high-temperature strength and creep resistance, making it suitable for demanding thermal power applications.
Typical applications:
● High-pressure boilers
● Superheaters
● Reheaters
● Steam systems
● Power plant equipment
10Cr9Mo1VNbN
For higher-parameter power generation systems, 10Cr9Mo1VNbN provides enhanced high-temperature strength and creep resistance.
It is used in applications where conventional carbon steel and lower-alloy materials cannot provide sufficient long-term performance.
Typical applications:
● Supercritical power plants
● Ultra-supercritical power plants
● High-temperature boiler components
● Superheater and reheater systems
Other GB/T 5310 Grades
Depending on project requirements, SANONPIPE can also supply or source grades including 10Cr5MoWVTiB, 12Cr2MoG and 15NiCuMoNb5.
The appropriate grade should always be selected according to the design temperature, pressure, service medium, operating conditions and project specification.
❸ Typical Applications Power Generation
GB/T 5310 boiler tubes are widely used in thermal power plants and other energy facilities.
Typical applications include boiler heating surfaces, superheaters, reheaters, economizers and high-temperature steam systems.
Industrial Boilers
Industrial plants use high-pressure boiler tubes for steam generation, process heating and thermal energy systems.
Material selection depends on operating temperature, pressure and expected service life.
High-Temperature Steam Systems
For high-temperature steam applications, alloy grades such as 15CrMoG and 12Cr1MoVG can provide improved high-temperature performance compared with conventional carbon steel.
Supercritical & Ultra-Supercritical Power Plants
Higher-parameter power generation requires advanced heat-resistant materials. Depending on the design conditions, high-alloy grades such as 10Cr9Mo1VNbN may be considered for demanding boiler components.
❹ How to Select the Right GB/T 5310 Grade?
Material selection should not be based simply on the highest available strength.
Engineers should consider:
● Operating temperature
● Working pressure
● Steam conditions
● Thermal cycling
● Required service life
● Welding requirements
● Boiler design
● Applicable project specifications
As a general guideline, 20G is suitable for many conventional boiler applications where cost efficiency is important, while 15CrMoG and 12Cr1MoVG are more suitable for elevated-temperature service.
For supercritical and ultra-supercritical applications, higher-alloy heat-resistant grades may be required.
The final material selection should always follow the applicable design code and equipment manufacturer's requirements.
❺ GB/T 5310 and International Steel Pipe Standards
International projects may require different material standards depending on the country, engineering company and equipment manufacturer.
SANONPIPE can support multi-standard procurement, including:
| Standard | Typical Product | Main Applications |
|---|---|---|
| GB/T 5310 | High-pressure boiler seamless tube | Boilers and power plants |
| ASTM A335 / ASME SA335 | Alloy steel seamless pipe | High-temperature piping |
| ASTM A213 / ASME SA213 | Seamless boiler & heat exchanger tube | Boilers and heat exchangers |
| ASTM A210 / ASME SA210 | Seamless carbon steel boiler tube | Boilers and superheaters |
| ASME SA179 | Seamless heat exchanger tube | Heat exchangers and condensers |
| ASME SA192 | High-pressure boiler tube | High-pressure boilers |
| ASME SA106 | High-temperature carbon steel pipe | Steam and process piping |
| ASTM A333 | Low-temperature steel pipe | Low-temperature service |
| API 5L | Line pipe | Oil & gas transportation |
| ASTM A519 | Mechanical tubing | Machinery and industrial applications |
| EN 10210 | Hot-finished hollow section | Structural applications |
| EN 10219 | Cold-formed hollow section | Structural applications |
This allows customers to consolidate multiple steel pipe requirements through one supplier.
❻ How to Select a Reliable GB/T 5310 Supplier?
For boiler and power plant projects, supplier reliability directly affects project quality and delivery schedules.
Quality & Traceability
Material should be supplied with complete quality documentation and traceability according to project requirements.
SANONPIPE can provide inspection documentation covering chemical composition, mechanical properties, dimensions and other applicable tests.
Inspection Support
Depending on project requirements, we can coordinate third-party inspection, dimensional inspection, PMI, non-destructive testing and other quality control services.
Processing Capability
To reduce on-site fabrication work, value-added services can include:
● Cut-to-length
● End beveling
● Threading where applicable
● Surface treatment
● Marking and tagging
● Customized packing
Global Logistics
We support international trade terms such as FOB, CIF and DAP, together with professional logistics arrangements for both small orders and large EPC projects.
❼ Why Choose SANONPIPE?
High Standards
We focus on material compliance, quality control and complete documentation to support demanding international projects.
Fast Delivery
By integrating inventory and qualified mill resources, SANONPIPE helps customers reduce procurement lead times and respond quickly to urgent project requirements.
One-Stop Supply
From GB/T 5310 boiler tubes to ASTM, ASME, API and EN standard products, customers can consolidate multiple steel pipe requirements through one supply partner.
Our product range includes:
● Seamless steel pipe
● Alloy steel pipe
● Carbon steel pipe
● Boiler tubes
● Heat exchanger tubes
● API line pipe
● ERW welded pipe
● Square steel tube
● Rectangular steel tube
Zero-Risk Supply
Quality inspection, documentation review, traceability, professional packing and logistics coordination help reduce procurement and delivery risks.
Green & Low-Carbon
We optimize material sourcing, order consolidation, packaging and transportation to improve resource efficiency and support customers' efforts toward a more sustainable supply chain.
❽ Frequently Asked Questions
Q1: What is GB/T 5310 used for?
GB/T 5310 is primarily used for seamless steel tubes in high-pressure and higher-pressure boiler applications, including superheaters, reheaters, economizers and other boiler pressure components.
Q2: What are the common GB/T 5310 grades?
Common grades include 20G, 20MnG, 25MnG, 15CrMoG, 12Cr1MoVG and 10Cr9Mo1VNbN, with additional alloy grades available for specific applications.
Q3: How do I choose between 20G and 12Cr1MoVG?
The choice depends mainly on operating temperature, pressure, design requirements and material specifications. 20G is widely used for conventional applications, while 12Cr1MoVG is intended for more demanding high-temperature service.
Q4: Can SANONPIPE supply other international standards?
Yes. SANONPIPE supplies a broad range of ASTM, ASME, API, EN and GB steel pipe products, allowing customers to combine different standards in one project order.
❾ Conclusion
GB/T 5310 high pressure boiler seamless steel pipe provides reliable material solutions for power generation, industrial boilers and high-temperature thermal systems.
From economical carbon steel grades such as 20G to alloy grades including 15CrMoG, 12Cr1MoVG and 10Cr9Mo1VNbN, customers can select materials according to specific operating conditions and project requirements.
As a professional global steel pipe supplier, SANONPIPE combines high standards, fast delivery, quality assurance and international logistics to provide a reliable one-stop solution for boiler, energy, EPC and industrial projects.
For your next project, send us your required standard, grade, OD, wall thickness, length, quantity and delivery destination.
Our team will provide a professional quotation and material supply solution.
SANONPIPE — High Standards. Fast Delivery. Zero-Risk Supply. Green & Low-Carbon.
Post time: Sep-15-2026
