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GMF A/S is a quality-conscious partner and general leader when it comes to quality, but we are also able to deliver the extra quality customers demand.
GMF A/S is ISO 9001-certified and satisfies EN253 and EN448 requirements as specified in the section below.
GMF A/S satisfies FW401 standards on customer request.
Sharpening of pipe, cold bending:
Thickness ≤ 3.2 mm according to nominal wall thickness is not sharpened.
Thickness > 3.2 mm is sharpened 30° -0/+5, plane 1.6mm +/-0.8mm
Ovality according to EN448:
The max. tolerated ovality in the bend zone is 6%.
Maximum ovality at pipe ends:
The tolerance for ovality at pipe ends is compliant with EN 253 and EN10217-2.
Ovality is measured as a two-point measurement of the diameter and may not exceed:
Outside diameter ≤ 219.1 ± 1% or 0.5 mm – whichever is greatest
Outside diameter > 219.1 ± 0.75 %
Deviation in relation to angle of bend:
Outside diameter ≤ 219.1: 90° ± 2.0°
Outside diameter > 219.1: 90° ± 1.0°
Wall thickness in the bend zone is not reduced to less than 85% of nominal thickness in accordance with EN448.
Gross list:
All ends are deburred.
All ends are undamaged.
Deformations: The difference in height between bumps and dents will not exceed 25% of the actual wall thickness used.
The difference in height naturally includes the height in the angle of the bend.
Scratches: The min. wall thickness and the min. wall thickness in the bend zone will be watched at all times.
Rust grade up to B level in accordance with ISO 8501:1:2007 EN 448:2009
Steel quality in accordance with EN10217-1, EN10217-2, EN10217-3, EN10216-2, EN10216-3, EN10216-4, ASTM, ANSI
All bends are marked with a charge/heat number at one end in accordance with 3.1 (EN10204/3.1).
GMF A/S - Hylkedamvej 70 - DK-5591 Gelsted - Tlf.: +45 63 46 54 00 - gmf@gmf.dk
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