ROMANIAN 
ENGLISH
| Process |
Parameter |
M. U. |
Limits |
Remarks |
||
|
Min |
Max |
|||||
| Stress release (primary heat treatment) |
Overall sizes |
mm |
8000x5000x2800 |
|||
| Induction stress release |
Overall sizes |
mm |
10.000x3500x3000 |
|||
| Vibration stress release |
Press weight |
Kg |
100 50.000 |
|||
| Automatic oxy-gas cutting as per dwg. |
Thickness Width Length |
mm mm mm |
– – – |
250 3000 12000 |
||
| Plasma cutting of refractory and stainless steels |
Thickness Width Length |
mm mm mm |
0,5 – |
20 2500 12000 |
||
| Mechanical cutting |
Thickness and Width |
mm
|
–
|
15×3000 |
||
| Plates or other items straightening |
Plate thickness |
mm
|
– |
50 |
||
| Welded structures redressing |
Pressing force Length Width |
Tf mm mm |
– – – |
250 3000 1600 |
||
| Plates bending |
Thickness Width |
mm mm |
1 1000 |
20 6000 |
||
| Profiles bending |
Profile height Radius |
mm mm |
10 500 |
100 – |
||
| Manual electric arc welding |
Thickness Thickness Thickness |
mm mm mm |
1,5 2 2 |
100 20 20 |
Carbon steel, low alloyed and alloyed steel Aluminium and aluminium alloys Copper and copper alloys |
|
| Hardness tests |
Hardness |
HRC |
30 |
60 |
||
| Semiautomatic CO2 welding |
Thickness |
mm |
2 |
300 |
Carbon steel or low alloyed steel |
|
| Electric arc Argon welding (W.I.G. method) |
Thickness Thickness Thickness |
mm mm mm |
1 2 2 |
12 15 15 |
Carbon steel, low alloyed and alloyed steel Aluminium and aluminium alloys Copper and copper alloys |
|
| Submerged flux automatic welding |
Thickness |
mm |
6 |
300 |
Carbon steel or low alloyed steel |
|
| Tack welding |
Thickness |
mm |
0,5 |
3 |
||
APPROVALS FROM CERTIFICATION BODIES FOR EXECUTION OF WELDED STRUCTURES
- Approval for execution of welded structures as per DIN 18800-7 class E and DIN 15018. S.L.V. Munchen Institute
- Certification as per EN ISO 3834-2 S.L.V. Munchen Institute
- TUV SUD GRUPPE Institute (Germania) Certificate for execution of pressure equipment as per AD 2000 Merkblatt – Directive 97/23/EC
- Germanischer Lloyd Institute Certificate for execution of welded structures components in naval industry
- I.S.C.I.R Approval for repairing and mounting of lifting appliances
- I.S.C.I.R. Approval for repairing and mounting of pressure metallic vessels
Execution personnel:
– 27 certified welders as per EN 287 – 1 PROCESSES 111, 135, 136, 141.
Survey Personnel for welded structures execution:
– 1 EWE
– 1 welding engineer
Welding procedures qualified per welding processes:
– Welding with covered electrodes (111)
– Welding with solid wire MAG (135)
– Welding with flux cored wire MAG ( 136 )
– MIG (131) welding
– WIG (141) welding
– Submerged arc welding – UP (121)
Welding procedures for materials used in fabrication as per:
– EN 10025; EN 10028; EN 10083; EN 10088; EN 10137; EN 1563
Inspection of welded joints:
– NDT testing ÷ RT; UT; MT; PT; metallographic analysis
– Destructive testing ÷ tensile test, bend test, impact test, microhardness test – HV 10
Welding equipment:
– Welding invertors with covered electrodes;
– MIG – MAG welding systems;
– WIG welding systems;
– Submerged arc welding systems.
EXECUTION OF SHELL RINGS ON ROLLER
|
Plate thickness ( mm ) |
Shell ring length ( mm ) |
Diameter ( mm ) |
Remarks |
|
1- 4 |
1500 |
150-1000 |
|
|
4-10 |
2600 |
400-6500 |
|
|
12-20 |
2600 |
800-6800 |
|
|
25-40 25-40 |
1500 2200 |
1500-6800 3000-6800 |
|
|
45-60 |
1600 |
1500-6800 |
With ends pre-heating and hot rolled |
|
60-80 |
1200 |
3000-6800 |
With ends pre-heating and hot rolled |
Note: Lengths greater than 2600 mm respectively 1600 mm can be executed from circular welded sections.