U-Rohre

In-House Bending

Thanks to our own in-house bending equipment, TPS can manufacture U-tubes ready for installation, for example for the use in heat exchangers, condensers, recuperators and other thermotechnical machines. With straight leg lengths of up to 9 m, our production complies with common standards or with the customer’s specification. If requested, the bent portion of the U-tubes can be heat treated.

Your advantages at a glance:

You save money and time

Surface quality

Heat treatment and bending area

Packing

Quality

Inspection

Applicable standards

U-tube tolerances

U-Rohre Tolleranzen
Tolerance on radii Rt rm 1,5 x da up to rm 200: +/- 1,0 mm
rm > 200 up to rm 400: +/- 1,5 mm
rm > 400 +/- 2,0 mm
Straight leg length difference a Straight leg length ≤ 6000 mm: - 0 / + 3 mm
Straight leg length > 6000 mm: - 0 / + 5 mm
Straight leg length tolerance l Straight leg length ≤ 6000 mm: - 0 / + 3 mm
Straight leg length > 6000 mm ≤ 9000 mm: - 0 / + 4 mm
Straight leg length > 9000 mm: - 0 / + 5 mm
Total length tolerance lg ≤ 6000 mm: - 0 / + 5 mm
> 6000 mm: - 0 / + 8 mm
Flattening of the bent area Acc. TEMA RCB-2.31:
max. 10% flattening from the nominal OD
Deviation from the roundness R [%]

rm ≤ 4 x da: R = da 5xrm x100[%]
rm ≤ 4 x da: ≤ 5 %

Calculation of the ovality:
R = da max - da min da max + da min [%]

Wall thinning of the bent area Smin Acc. TEMA R-2.31 for radii larger than 1,5da:
max 17% wall thinning
Flatness tolerance t rm ≤ 300 mm: ≤ 1,5 mm
rm > 300 mm: ≤ 2,0 mm
Deviant tolerances

With radii <1,5 x da tolerances deviating from the tolerance standard
must be defined for the ovality/flattening
and minimum wall in the bent area.

Bending of titanium/titanium alloy U-tubes is possible for radii 2 x da

You have Questions?
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+49 6592 / 712-0
service@tpsd.de
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