What Is a Rotary Hose?

Hose is an important part in modern industry. The hose is mainly used for wires, cables, wire and cable protection tubes for automatic instrument signals and civilian shower hoses, with specifications from 3mm to 150mm. Small-caliber hoses (inner diameter 3mm-25mm) are mainly used for the protection of sensor lines and industrial sensor lines of precision optical rulers.

the inside diameter of [mm]	Outer diameter [mm]	tolerance +/- [mm]	Stretched weight +/- 10% [Kg / m]	Minimum bending radius [mm]	Minimum radial load [N]	Minimum tensile strength [N]
4	6	0.1	0.034	15	800	320
5	7	0.1	0.039	17	835	340
6	8	0.2	0.044	19	875	360
7	9	0.2	0.049	20	930	380
8	10	0.2	0.056	twenty two	975	400
9	11	0.2	0.063	25	1020	450
10	13	0.2	0.100	30	1060	500
11	14	0.2	0.110	31	1095	550
12	15	0.2	0.120	32	1140	600
13	16	0.2	0.130	33	1175	650
14	17	0.2	0.140	35	1215	700
15	18	0.2	0.150	37	1250	720
16	19	0.2	0.160	40	1290	760
17	20	0.2	0.170	45	1330	800
18	twenty one	0.2	0.180	42	1470	890
19	twenty three	0.3	0.212	40	1510	840
20	twenty four	0.3	0.223	42	1545	890
twenty one	25	0.3	0.235	45	1580	920
twenty two	26	0.3	0.247	48	1620	940
twenty three	27	0.3	0.258	52	1655	960
twenty four	28	0.3	0.269	55	1690	980
25	29	0.3	0.280	58	1735	1000
26	30	0.3	0.292	60	1770	1020

After the metal reacts with oxygen in the atmosphere, an oxide film is formed on the surface. The iron oxide formed on ordinary carbon steel continues to be oxidized, which continuously expands the rust and eventually forms holes. Carbon steel surfaces can be electroplated with paint or oxidation-resistant metals (eg, zinc, nickel, and chromium), but, as is known, this protection is only a thin film. If the protective layer is broken, the underlying steel begins to rust.

The corrosion resistance of stainless steel hoses depends on the content of chromium. When the amount of chromium is added to 10.5%, the atmospheric corrosion resistance of steel is significantly increased, but when the chromium content is higher, the corrosion resistance is still not obvious, but . The reason is that when steel is alloyed with chromium, the type of surface oxide is changed to a surface oxide similar to that formed on pure chromium metal. This tightly adhered chromium-rich oxide protects the surface from further oxidation. This oxide layer is extremely thin, and through it you can see the natural luster of the stainless steel surface, which makes stainless steel a unique surface. Moreover, if the surface layer is damaged, the exposed steel surface will react with the atmosphere to repair itself, re-form this "passivation film" and continue to protect. ^[2]