STEAM HOSE & HOT WATER HOSE

On this range it is the same construction: EPDM tube, polyester cord, EPDM cover, 10 bar working with 40 bar burst across all 13 codes. What changes between a hot water washdown line and a steam line is the temperature at the use point, which is why we ask for it before quoting rather than assuming from the pressure.

No. A hydraulic body is built around steel wire and an oil-resistant tube, and its rating is quoted at a working pressure that says nothing about hot wet steam. This hose carries 10 bar against a 40 bar burst, and the tube is EPDM for a reason, so the two are not interchangeable even when the fittings match.

The 19 mm code is rated 10 bar working (150 psi) with 40 bar (580 psi) minimum burst. Minimum bend radius is 190 mm, mass is 0.52 kg/m, and the coil is 100 m, so a 3/4 inch order arrives as a 52 kg coil.

5 m3/h is 1.4 l/s. A 1 inch (25 mm) bore moves that at about 2.8 m/s, while a 3/4 inch bore needs 4.9 m/s and starts to cost pressure. The 1 inch row is 0.70 kg/m with a 250 mm bend radius, and it is the last size that ships on a 100 m coil.

1/2 inch is the usual size: 13 mm bore, 10 bar working, 0.34 kg/m and a 130 mm bend radius, which is short enough to drop into a press frame without a loop. Above that bore the mass climbs fast, 0.52 kg/m at 3/4 inch and 0.70 kg/m at 1 inch.

Saturated steam at 10 bar sits near 180 ℃, which is why pressure and temperature have to be quoted together on a steam line. The 10 bar rating describes the pressure the body holds, not the temperature it will see at the use point. Send both figures and the compound is confirmed against the duty.

Heat and condensate hammer, together, on a body rated 10 bar working with 40 bar burst. The coupling end is where the tube is coolest and the condensate collects, so the ferrule sees a temperature swing on every cycle while the crimp holds the cover. A ferrule matched to the cover thickness, crimped and tested as an assembly, is what stops it; a hose clip on a steam line does not.

Heat ageing reaches the cover from outside as well as through the wall, and a cover cycled hot and dry between shifts hardens first. The cover here is EPDM, which is chosen for exactly that duty, but a 4 inch line at 4.06 kg/m left lying against a hot manifold is being aged from both sides at once.

YIBO, in Luohe, Henan, builds 13 codes from 6 mm to 102 mm bore on one line, all rated 10 bar working with 40 bar burst. Coils and crimped assemblies ship from the same plant, loading through Qingdao or Shanghai.

Price follows bore and ends: 0.24 kg/m at 3/8 inch, 0.70 kg/m at 1 inch, 4.06 kg/m at 4 inch. Coils are 100 m up to the 25 mm code and 61 m above it, bagged and palletised. Send bore, length, ends and destination for a firm figure the same working day.