| ASTM-UNS No. | Wieland Designation | EN Designation | EN No. | JIS No. | Data Sheet | ||
|---|---|---|---|---|---|---|---|
| - | A22 | AlMgSi | AW-6060 | - | - |
Operating range:
High-pressure applications up to 134 bar possible (e.g. R744)
Wieland GEWA-D tubes are medium high finned tubes in copper and copper alloys as well as aluminum, carbon or stainless steel. Finned tubes of this series resist very high mechanical and thermal stress.
For improved heat transfer the inner surface of GEWA-DW tubes have an additional structure. This also favors very small bending radii and coil diameters
| Tube number | Alloy* | Tube type** | Outside diameter [mm] | Fin height [mm] | Inside diameter [mm] | Outside diameter plain end [mm] | Outside surface area [m2/m] | Approx. weight [kg/m] |
| D-1135.12100-00 | K21 | D | DW | 19.00 | 3.50 | 10.00 | 15.00 | 0.18 | 0.62 |
| D-1135.14100-00 | K21 | D | DW | 21.00 | 3.50 | 12.00 | 18.00 | 0.20 | 0.72 |
| D-1135.18100-00 | K21 | D | DW | 25.50 | 3.50 | 16.50 | 22.00 | 0.26 | 0.94 |
| D-1145.18100-00 | K21 | D | 27.50 | 4.50 | 16.50 | 22.00 | 0.33 | 1.04 |
| DW-1132.12085-16 | K21 | DW | 19.00 | 3.20 | 10.90 | 15.88 | 0.16 | 0.61 |
| DW-1135.18080-16 | K21 | DW | 25.50 | 3.50 | 16.90 | 22.00 | 0.26 | 0.81 |
| DW-1133.12079-16 | L10 | DW | 19.05 | 3.30 | 10.87 | 15.88 | 0.17 | 0.57 |
| DW-1133.25125-16 | L10 | DW | 31.75 | 3.37 | 22.51 | 28.58 | 0.33 | 1.40 |
| D-1135.14175-00 | A22 | D | 21.00 | 3.50 | 10.50 | 16.10 | 0.20 | 0.29 |
| DW-1145.11122-16 | A22 | DW | 20.00 | 4.50 | 8.56 | 14.80 | 0.22 | 0.23 |
| D-1145.18080-00 | O60 | D | 27.00 | 4.50 | 16.40 | 21.30 | 0.32 | 0.90 |
Fin pitch 11 fins/inch
* K = copper | L = copper-nickel | A = aluminum | O = carbon steel | P = stainless steel
** D = medium high finned + inside undulation | DW = medium high finned + internal structure
Tube number code system (example D-1135.14100-00)
| D- | 11 | 35. | 14 | 100 | -00 |
| Tube type | Fins/inch | Fin height [1/10 mm] | Core-tube diameter [mm] | Wall thickness [1/100 mm] | Inner structure
|
| Length [mm] | Length tolerances |
| < 2,000 | + 2 mm |
| 2,000 - 8,000 | + 1 ‰ (max 5 mm) |
| > 8,000 | + 0.7 ‰ |
The fins are obtained by roll forming the outer surface of a plain tube. This process results in an increase in strength of the finned sections. Plain ends remain soft and have a smaller diameter than fined sections. Soft annealing of the tubes is necessary if they must be suitable for coiling or bending to heat exchangers.
We offer the widest range of material in the industry and can extend it on request in case of special requirements for heat conductivity, mechanical properties or corrosion resistance. Medium-high finned tubes from Wieland Thermal Solutions are available in copper, copper-nickel, aluminium and carbon steel as well as in stainless steel in limited range.
The primary material complies with the requirements of DIN EN 12451, AD-2000 Merkblatt W6/2 and on request with ASTM B111 or ASTM B75. For aluminum, carbon or stainless steel individually standards agreed with the customer can be applied.
GEWA-D finned tubes are manufactured acc. to Wieland standard R-2200 and DIN EN 12451. On request, a production acc. to VdTÜV 420/2 (harmonized with the European Pressure Equipment Directive PED 2014/68/EU) or ASME SB 359/ASTM B359 is possible.
To ensure consistent product quality, Wieland-Werke AG has a sophisticated quality control system according to DIN EN ISO 9001:2015 which has been verified and certified by an independent certification company. Our test laboratories in the Central Laboratory and Development Services have been accredited to DIN EN ISO/IEC 17025:2018 and DIN EN ISO 9001 as test and certification laboratories.
Our Technical Marketing experts are available at any time as contact partners to work together with your experts from the very early product planning stages in order to obtain optimum results for the manufacturing stage and for your application. The only way to find the best, most cost-effective solution is by means of comprehensive technical consultation based on computerised thermal engineering rating.
