Standard: DIN1630
Application: These tubes are predominantly used in the construction of chemical plant, vessels, pipework and for general mechanical engineering purposes.
Size(mm): O. D.: 6.0~219.0 W. T.: 1~30 L: Max 12000
Delivery condition: Normalized, Bright Annealing.
Certificate: ISO9001 TUV
Packing:
1. Standard export bundle wrapped with strong steel strip
2. Wooden case
3. Nylon packed
Payment: T/T
Delivery: With 40 days of order confirmation
Your special requirement is highly welcomed and will be fulfilled.
We always provide highest quality seamless pipe/tube and best service.
Chemical Composition:
| Grade | ChemicalComposition( % ) | ||||
| C max | Si max | Mn | P max | S max | |
| St 37.4 | 0.17 | 0.35 | ≥ 0.35 | 0.04 | 0.04 |
| St 44.4 | 0.2 | 0.35 | ≥ 0.40 | 0.04 | 0.04 |
| St 52.4 | 0.22 | 0.55 | ≤ 1.60 | 0.04 | 0.035 |
Mechanical Properties (Mpa):
| Steel Grade | Yield Strength(Mpa) for wall thicknesses,in mm. | Tensile Strength(Mpa) | Elongation(%) | |||
| up to 16 | over 16, up to 40 | over 40, up to 65 | longitudinal | transverse | ||
| ST 37.4 | ≥235 | ≥225 | ≥215 | 350-480 | ≥25 | ≥23 |
| ST 44.4 | ≥275 | ≥265 | ≥255 | 420-550 | ≥21 | ≥19 |
| ST 52.4 | ≥355 | ≥345 | ≥335 | 500-650 | ≥21 | ≥19 |
