Introduction of Gost Standard Carbon steel pipe
GOST Standard Carbon Steel Pipes
The GOST standards for carbon steel pipes specify the requirements for manufacturing, testing, and applications of pipes used in various industries, including construction, oil and gas, power generation, and machinery.
- Material: Carbon steel grades suitable for structural, pressure, and pipeline applications.
- Manufacturing Processes: Includes seamless, welded, cold-drawn, and hot-rolled production techniques.
GOST Standards for Carbon Steel Pipes
| GOST Standard | Description |
|---|---|
| GOST 8732-78 | Hot-rolled seamless steel pipes for general and structural use. |
| GOST 8734-78 | Cold-drawn seamless steel pipes with high precision and smooth surface finish. |
| GOST 10704-91 | Electric-welded steel pipes for pipelines and structural purposes. |
| GOST 10705-80 | Welded pipes for pipelines and non-critical applications. |
| GOST 3262-75 | Water and gas pipeline steel pipes for construction and plumbing. |
| ProductName | GOST Standard | Specification |
| Welded pipe | ||
| Gas pipeline steel pipe | GOST 3262-75 | Ø 15-180 mm |
| ERW pipe | GOST 10704-91, 10705-80 | Ø 57-810 mm |
| Pipeline steel pipe | GOST 20295-85 | Ø 140-810 mm |
| GOST 20295-85, 10706-76 | Ø 530-1420 mm | |
| Galvanized steel pipe | GOST 3262-75, GOST 10704-91, 10705-80 | Ø 15-325 mm |
| Shaped steel tube | GOST 8645-68, 8639-82, | 20x20x1,5-160x120x4,0 |
| TU 14-105-566-93 | ||
| GOST 30245-94 (st. 3 SP 5, 09 G2S) | 100x100x4,0-200x200x8 | |
| Seamless Steel Pipe | ||
| Hot rolled seamless steel pipe | GOST 8731-74, 8732-78 (st.10, 20, 09G2S) | Ø 32-680 mm |
| Cold drawn seamless steel pipe | GOST 8733-74, 8734-75 (st.20, St10, 09G2S) | Ø 10-203mm |
Testing and Quality Control of Gost Carbon Steel Pipes
To ensure compliance with GOST standards, pipes undergo rigorous testing:
- Hydrostatic Testing:
- Ensures pipes can withstand internal pressure without leaks.
- Non-Destructive Testing (NDT):
- Includes ultrasonic or eddy current testing to detect flaws.
- Tensile Testing:
- Verifies strength and elongation properties.
- Dimensional Inspection:
- Checks outer diameter, wall thickness, and length accuracy.
- Visual Inspection:
- Ensures surface quality and absence of defects like cracks or dents.
