Customer area
Tubes manufactured according to NF EN 10224 Standard:
ø > 350 mm : SAW SPIRAL (Submerged Arc Welded)
Submerged Arc welding with filler metal: welding is performed inside and outside the tube with 100% ultrasound control of the welding wire. Each tube is hydraulically tested.
ø 100 à 400 mm : ERW-HFI (Electric Resistance Welded - High Frequency Induction)
Welding is performed without metal filler by melting both edges of the coil in order to allow them to mix after passing through a mould calibrated to the external diameter of the tube. This operation is also performed under 100% ultrasound control and each tube is hydraulically tested.
Dimensions
Controls - Tubes
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Freeze branding on one end:
Tube number + manufacturer's brand - Control of diameter, thickness and circumference
- Unit hydraulically tested at 90% of yield strength
- Control of socket inner diameter
- 3.1 CERTIFICATE according to EN 10 10 204 standard
- Steel chemical and mechanical specifications
Control - Welds
Welding wire: 100% ultrasound + 250 mm X-rayed on each side
