In the composition of St37-2 Galvanized Seamless Pipe, carbon is the main element, usually accounting for 0.12% to 0.20% of the entire composition. Silicon and manganese are also important elements, usually in amounts ranging from 0.10% to 0.40% each. The phosphorus and sulfur content are controlled at low levels to maintain good toughness and corrosion resistance.
St37-2 galvanized steel pipe has high tensile strength and yield strength and can meet the strength requirements of various mechanical parts. Its tensile strength is usually between 135 and 165N/mm², and its yield strength is between 110 and 130N/mm². This enables the St37-2 hot-dip galvanized steel pipe to withstand the pressure of the load and ensure the stability and safety of mechanical parts.
St37-2 Galvanized Plumbing has good plasticity and toughness, and can be used for bending, stretching, impact and other processing operations without being prone to brittle fracture. This enables St37-2 Galvanized piping to adapt to the processing requirements of various complex shapes and manufacture mechanical parts with complex shapes.
Chemical Composition of ST 37-2 Carbon Steel Tubes
| DIN 17121 RST 37-2 Chemical Properties | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
| max 0.17 | – | – | 0.05 | 0.05 | – | – | – | – | N 0.009 |
Mechanical properties of CS DIN 17121 Seamless Tubes
| Yield Strength | Tensile Strength | Elongation A5 min | |||
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage |
| 340 | 470 | – | 26 | ||
Mild Steel Pipe Galvanized
Dimensional Tolerances of DIN 17121 Grade RST 37-2 Tubes
Grade RSt 37-2 OD/Wall tolerance
| Outer diameter and wall Thickness | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Execution | Size Range | OD Tolerance | Wall tolerance | ||||||
| DIN 17121 Grade RSt 37-2 Hot-rolled Tube | OD – 80 mmOD > 80 mmWall | ± 0.4 mm± 0.5 % of OD | ± 0.7 mm± (5 % x wallthickness + 0.1 mm | ||||||
| DIN 17121 Grade RSt 37-2 Hot-rolled peeled tube | All sizesWall | + 0.25/- 0 mm | ± 0.8 mm± (5 % x wall thickness+ 0.2 mm) | ||||||
| DIN 17121 Grade RSt 37-2 Cold Worked tubecold-rolled or cold-drawn | OD 80 Wall Thickness 8 | + 0.30/- 0 mm*+ 0.35/- 0 mm*+ 0.40/- 0 mm* | ± 0.30 mm± 0.35 mm± 0.40 mm | ||||||
Why choose us
GNEE typically has over 5,000 tons of pipe of various sizes and standards. Our stock pipe sizes range from 20mm to 406mm outer diameter and 2mm to 70mm wall thickness.
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FAQ
1.Q.Why choose Gnee?
A.With us, you will get the most competitive price, guaranteed quality, guaranteed delivery and after-sales service.
2.Q.Do you have quality control?
A.Yes, we have got BV.SGS certification.
3.Q: Can I get some samples?
A: We are glad to provide free samples to you, but we do not offer the freight.
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