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Nominal Size (mm)	Base Tube Dia for Pricing (mm)	Equivalent Round (mm) Due to Friction Loss	Nominal Size (mm)	Base Tube Dia for Pricing (mm)	Equivalent Round (mm) Due to Friction Loss

150 x 500	381	279	400 x 645	559	533
x 555	406	297	400 x 645	559	533
x 635	457	317	x 740	610	566
x 710	508	332	x 815	660	597
x 785	559	351	x 890	711	627
x 865	610	363	x 965	762	655
x 940	660	378	x 1040	813	680
x 1040	710	391	x 1120	864	703
x 1115	762	403	x 1200	914	726
			x 1295	965	749
200 x 535	406	337	x 1370	1016	769
x 610	457	363	x 1450	1067	790
x 685	508	383	x 1525	1118	807
x 760	559	403	x 1600	1168	828
x 840	610	421	x 1680	1219	845
x 925	660	439	x 1760	1270	863
x 1000	711	454
x 1090	762	472	450 x 700	610	586
x 1170	813	485	x 790	660	622
x 1245	864	497	x 865	711	652
x 1320	914	513	x 940	762	683
			x 1015	813	711
250 x 585	457	398	x 1090	864	739
x 660	508	426	x 1175	914	764
x 735	559	449	x 1250	965	790
x 810	610	469	x 1345	1016	813
x 890	660	492	x 1420	1067	833
x 965	711	510	x 1500	1118	853
x 1050	762	528	x 1575	1168	876
x 1145	813	546	x 1650	1219	896
x 1220	864	561	x 1730	1270	914
x 1295	914	579
x 1370	965	592	500 x 660	610	600
x 1450	1016	607	x 745	660	640
x 1525	1069	619	x 840	711	675
x 1610	1118	635	x 915	762	708
			x 990	813	739
300 x 635	508	457	x 1070	864	767
x 710	559	485	x 1145	914	800
x 790	610	510	x 1225	965	825
x 865	660	533	x 1305	1016	845
x 940	711	556	x 1390	1067	873
x 1015	762	576	x 1470	1118	896
x 1100	813	596	x 1550	1168	919
x 1195	864	614	x 1625	1219	942
x 1270	914	637	x 1700	1270	962
x 1345	965	650
x 1420	1016	668	600 x 1090	914	875
x 1500	1069	683	x 1170	965	900
x 1580	1118	698	x 1250	1016	912
x 1650	1168	713	x 1325	1067	938
x 1750	1219	728	x 1405	1118	960
x 1820	1270	741	x 1490	1168	997
			x 1565	1219	1000
350 x 685	559	513	x 1645	1270	1030
x 760	610	541	x 1720	1321	1038
x 840	660	568	x 1800	1372	1060
x 915	711	594	x 2000	1500	1150
x 990	762	620
x 1070	813	640	700 x 1115	965	927
x 1150	864	660	x 1195	1016	965
x 1245	914	683	x 1270	1065	1000
x 1320	965	703	x 1355	1118	1036
x 1400	1016	721	x 1430	1168	1068
x 1475	1067	739	x 1515	1219	1102
x 1550	1118	746	x 1595	1270	1135
x 1625	1168	774	x 1675	1321	1165
x 1700	1219	790	x 1755	1372	1195
x 1800	1270	957	x 1830	1420	1223
			x 1950	1500	1266

MAXIMUM LENGTH 3.5M, EXCEPT 600 AND 700 (MAXIMUM 2M)

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Roladuct operates Australia wide

For more information email us at one of our offices

Roladuct Spiral Tubing Pty Ltd
PO Box 41, Kemps Creek NSW 2178

Created and Designed by Jason Waddell

Sizes of Flat-Oval Spiral Duct

Maximum Length - 3.5m Double Corrugated Standard Gauge Galv.

Maximum Length - 3.5m
Double Corrugated
Standard Gauge Galv.