Applications
Heat Treated, High Strength Hollow Sections Are Suitable For All Construction And Mechanical Applications.
Production Range Heat Treated Square & Rectangular Hollow Sections
| Square: | 20x20mm - 250x250 mm | Wall Thickness: 1.2mm - 13 mm |
| Rectangular: | 20x30mm - 300x200 mm | Wall Thickness: 1.2mm - 13 mm |
| 10x10" - 12x8" | Wall Thickness: 5mm – 13mm | |
| Length: | 4m to 14m (as per chart) |
Full Body Heat Treatment
20x20 mm ≤ H,B ≤ 250x250 mm: Normalizing
20x20 mm ≤ H,B ≤ 250x250 mm: Stress Relieving Annealing
Stress relieving and normalizing (bright annealing) are carried out offline with atmosphere controlled ''rolled hearth furnace'' between 550 - 700 °C (Stress relieving) and 880-950 °C (normalizing) on full pipe body. By means of full body annealing; micro structure and hardness differences between main material and weld seam are removed and products toughness, grain structure, bending and mechanical properties are improved. After the annealing, high surface quality and bright surface are obtained.
Production Standards
DIN 2395, ASTM A 500, ASTM A513-8a, ASTM A 500, EN 10210 1-2
Material Quality / Steel Grade
| ASTM A 513-8a: | MT 1010, MT 1015, MT X 1015, MT 1020, MT X 1020 |
| DIN 2395: | Ust 37-2, RSt 37-2 , St 37-3,St 44-2, St 44-3, M 22, QStE 340 |
| EN 10210 1-2: | S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H, S275NH, S275NLH, S355NH, S355NJH, S420NH, S420NLH, S460NH, S460NLH |
| ASTM A 500: | GRADE D |
| EN 10305-5: | E155, E195, E235, E275, E355 |
Mill Test Certificates
In accordance to EN 10204 2.1, 2.2, 3.1, 3.2 Quality Control
Quality Control
| Destructive Tests: | Flattening Test Expanding Test Tensile Test Impact Test Charpy V Notch Test |
| Non-destructive test: | Purser Hydrostatic Test Eddy Current Test Phased Array |
| Chemical Analysis: | Spectral Analysis |
| Metallographic Examination: | Macro Examination Micro Examination Micro Hardness Analysis Grain Size Control |
| Other: | HV and HRC Hardness Test Visual and Dimensional Check |
Finishing
Square Cut
Heat Treated Square & Rectangular Hollow Sections Range, Click Below