Overview of GB/T 12771 Stainless Steel Pipe
GB/T 12771 stainless steel welded pipe is a high-quality product manufactured to Chinese national standards using advanced welding technology. This pipe offers excellent corrosion resistance and robust mechanical strength. It can handle tough industrial environments. GB/T 12771 stainless steel pipe is suitable for chemical fluids or high-pressure media, and is a reliable choice for modern pipeline projects.
Specifications
| Outside diameter(mm) |
1.00 | 1.20 | 1.50 | 2.00 | 2.50 | 3.00 | 3.40 | 4.00 | 5.00 | 6.00 |
| 18 | √ | √ | √ | |||||||
| 21.3 | ||||||||||
| 25 | √ | √ | √ | √ | ||||||
| 26.9 | ||||||||||
| 32 | √ | √ | √ | √ | √ | |||||
| 33.7 | ||||||||||
| 38 | √ | √ | √ | √ | √ | |||||
| 42.4 | ||||||||||
| 45 | √ | √ | √ | |||||||
| 48.3 | √ | |||||||||
| 57 | √ | √ | √ | |||||||
| 60.3 | √ | |||||||||
| 73 | √ | √ | √ | |||||||
| 76.1 | √ | √ | √ | √ | ||||||
| 88.9 | √ | √ | √ | √ | √ | √ | ||||
| 101.6 | √ | √ | √ | √ | ||||||
| 108 | √ | √ | √ | √ | ||||||
| 114.3 | √ | √ | √ | √ | √ | √ | √ | |||
| 133 | √ | √ | √ | √ | ||||||
| 139.7 | √ | √ | √ | √ | ||||||
| 159 | √ | √ | √ | √ | √ | |||||
| 168.3 | √ | √ | √ | √ |
| Outside diameter(mm) |
Wall Thickness(mm) | |||||||
| 2.50 | 3.00 | 3.40 | 4.00 | 4.50 | 5.00 | 6.00 | 8.00 | |
| 219.1 | √ | √ | √ | √ | √ | √ | ||
| 273.1 | √ | √ | √ | √ | √ | √ | √ | |
| 323.9 | √ | √ | √ | √ | √ | √ | ||
| 355.6 | √ | √ | √ | √ | √ | |||
| 377 | √ | √ | √ | √ | √ | |||
| 406.4 | √ | √ | √ | √ | √ | |||
| 426 | √ | √ | √ | √ | √ | |||
| 457 | √ | √ | √ | √ | √ | |||
| 480 | √ | √ | √ | √ | √ | |||
| 508 | √ | √ | √ | √ | ||||
| 530 | √ | √ | √ | √ | √ | |||
| 559 | √ | √ | √ | √ | ||||
| 610 | √ | √ | √ | √ | ||||
| 630 | √ | √ | √ | √ | √ | |||
Product Advantages
- Outstanding Corrosion Resistance:
This material resists acid and alkali corrosion well. It can handle tough working conditions, ensuring stable operation over time. - Excellent Mechanical Properties:
The product has high strength and toughness. It also offers great pressure-bearing capacity. This makes it suitable for various pressure grades. - Safety Certification:
The inner wall is smooth and flat, making it less prone to dirt accumulation and bacterial growth. It has passed relevant hygiene and safety certifications and fully complies with hygiene standards in the food, pharmaceutical, and other industries. - Long Service Life:
It features excellent durability and anti-aging performance, significantly reducing maintenance costs and providing a long and reliable service life.
Standard Comparison
| Standard comparison |
standard | OD | WT | Grade | Applicable fields |
| GB/T 12771 | 6mm ~ 630mm | 1.0mm ~ 40mm | 304, 316L, 321 | Chemical, food, pharmaceutical | |
| ASTM A312 | 13.72mm ~ 323.85mm | 1.24mm ~ 9.53mm | TP304, TP316 | Petroleum and chemical industry | |
| JIS G3459 | 13.8mm ~ 318.5mm | 1.20mm ~ 10.30mm | SUS304, SUS316 | Japanese market | |
| EN 10217-7 | 10mm ~ 610mm | 1.0mm ~ 20.0mm | 1.4301, 1.4401 | European market | |
| DIN 2463 | 6mm ~ 610mm | 1.0mm ~ 20.0mm | X5CrNi18-10 | German industry |
Application of GB/T 12771 Stainless Steel Pipe
- Oil and Gas Industry: Suitable for the transportation of corrosive media such as petroleum, natural gas, and chemical raw materials. Resistant to high temperature and high pressure, safe and reliable.
- Food & Beverage: Complies with food-grade standards. Widely used in fluid transport in brewing, dairy, beverage, and other food processing industries.
- Pharmaceutical Industry: Meets GMP standards. Used in pharmaceutical process piping systems to ensure drug production safety.
- Water Treatment Engineering: Applicable in desalination, sewage treatment, pure water systems, and other water treatment fields.
- Thermal Energy Engineering: Used in heat exchanges, boiler pipelines, heating systems, and other thermal equipment. Excellent high-temperature resistance.
Quality Assurance System
- Raw Materials Purchase: High-quality stainless steel coils from reputable steel mills, such as Tasco and Baosteel, are utilized.
- Production Process: A fully automatic welding production line to ensure weld quality.
- Process Inspection: Implement full-process quality monitoring and strictly inspect each procedure.
