GB/T 42899-2023 in English
VALIDTest method for weldability of ocean engineering structural steel
- Issued on:2023-08-06
- Implemented on:2024-03-01
- File Format:PDF
- Delivery:Via email within 5 business days
$418.00
| Standard No: | GB/T 42899-2023 |
| Document status: | VALID |
| Title in English: | Test method for weldability of ocean engineering structural steel |
| Title in Chinese: | 海洋工程结构钢可焊性试验方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 5 business days |
| Issued on: | 2023-08-06 |
| Implemented on: | 2024-03-01 |
| ICS Classification: | 77.140.60-Steel bars and rods |
| Chinese Classification: | H44-Profile steel and deformed steel |
| Professional Classification: | GB-National Standard |
| Related Keywords: | weldability test method
test method weldability test appropriate test method marine engineering structural steel |
| Related Topics: | Thirteenth Five-Year Ocean Engineering
Marine Engineering Huge steel structure engineering Ocean Engineering Twelfth Five-Year Plan engineering structure Structural steel welding Solderability testing method Offshore engineering white copper |
《GB/T 42899-2023海洋工程结构钢可焊性试验方法》由TC183（全国钢标准化技术委员会）归口，TC183SC8（全国钢标准化技术委员会型钢分会）执行，主管部门为中国钢铁工业协会。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 42899-2023: Weldability Test Method for Marine Engineering Structural Steel
1. Background of Standard Formulation and Analysis of Technology Evolution
With the rapid development of marine engineering, higher requirements are placed on the welding performance of structural steel. GB/T 42899-2023 is formulated based on the progress of international welding technology and the accumulation of domestic practical experience in recent years, aiming to provide scientific basis and technical support for the weldability test of marine engineering structural steel.
2. Comparison table of standard frameworks
| Standard requirements | Butt welding test | Overlay welding test | Controlled thermal strength test (CTS) |
|---|---|---|---|
| Scope of application | Steel plates with a thickness of ≤150mm and hot-rolled H-shaped steel with a thickness of ≤63mm | Applicable to all marine engineering structural steels | Used to evaluate the sensitivity of hydrogen-induced cracking in the heat affected zone of welding |
| Test methods | Including Charpy V-type impact test, fracture mechanics test, etc. | Using tungsten inert gas shielded arc welding (TIG) | Combined use of restrained fillet welds and free restrained specimens |
| Technical requirements | Must meet the requirements of GB/T 229 and other series of standards | Comparison of heat affected zone hardness test with parent material | Determination of critical conditions for crack initiation |
3. Implementation suggestions section
Implementation suggestions:
- Choose the appropriate test method: choose butt welding, cladding or CTS test according to steel type and thickness.
- Strictly control welding parameters: ensure that preheating temperature and heat input meet standard requirements.
- Pay attention to specimen preparation: select representative test materials and perform low-temperature dehydrogenation treatment to reduce hydrogen content.
- Strengthen third-party witnessing: ensure the fairness and validity of test data.
4. Explanation of professional terms
Weldability test: refers to the evaluation of the performance and adaptability of materials under different welding process conditions. For offshore engineering structural steel, its weldability directly affects the reliability and service life of the structure.
Controlled Thermal Strength Test (CTS): By simulating actual welding conditions, the hydrogen-induced crack sensitivity of the material in the heat-affected zone is evaluated to ensure the quality of the welded joint.
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