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- BAM - Federal Institute for Materials Research and Testing
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DIN EN 4555
Aerospace series - Pipe coupling 37°, in heat resisting steel - Ferrules, welded end - Inch series; German and English version EN 4555:2003
DIN EN 4554
Aerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Straight unions, threaded - Inch series; German and English version EN 4554:2003
DIN EN 4553
Aerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Elbow 90° nipples, welded end - Inch series; German and English version EN 4553:2003
DIN EN 4552
Aerospace series - Pipe coupling 37°, spherical, in heat resisting steel - Straight nipples, welded end - Inch series; German and English version EN 4552:2015
DIN EN 4549
Aerospace series - Pipe coupling, in heat resisting steel or in heat resisting nickel alloy - Coupling end, welded - Design configuration - Inch series; German and English version EN 4549:2014
DIN EN 4550-1
Aerospace series - Pipe coupling, 37° - Design configuration - Inch series - Part 1: Male sealing ends, spherical; German and English version EN 4550-1:2014
DIN EN 4550-4
Aerospace series - Pipe coupling, 37° - Design configuration - Inch series - Part 4: Female sealing ends; German and English version EN 4550-4:2014
DIN EN 4551
Aerospace series - Pipe coupling, 37°, in heat resisting steel - Swivel nuts - Inch series; German and English version EN 4551:2014
DIN EN 4550-3
Aerospace series - Pipe coupling 37° - Design configuration - Inch series - Part 3: Port connections; German and English version EN 4550-3:2003
DIN EN 4550-2
Aerospace series - Pipe coupling 37° - Design confirguration - Inch series - Part 2: Port ends; German and English version EN 4550-2:2003





