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304 Metal Hose

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304 Metal Hose

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- 商品名稱: 304 Metal Hose
Stainless steel pressure-resistant metal hose is a stainless steel corrugated pipe braided with one or more layers of steel wire or steel belt mesh sleeves, with joints or flanges at both ends, and is a flexible element used to transport various media. Its characteristics are: corrosion resistance, high temperature resistance, low temperature resistance (-196 ℃ ~ +420 ℃), light weight, small size, good flexibility. Widely used in aviation, aerospace, petroleum, chemical, metallurgy, electric power, paper, wood, textile, construction, medicine, food, tobacco, transportation and other industries.

In a complex piping system, there are often difficulties in installation due to the limitation of space and location conditions: the formed pipe cannot be installed; the pipe that is bent and straightened, and the pipe that is installed will inevitably cause partial localization. cold correction. Depending on the diameter of the pipe and the specific conditions of the site, the amount of cold correction ranges from a few millimeters to several tens of millimeters, and some reach hundreds of millimeters. Practice has proved that the larger the amount, the higher the internal stress. The installation stress remaining in the pipeline system is undoubtedly a great hidden problem.
A section of the bearing lubricating oil conduit in a certain type of engine has broken many times in actual operation, which is caused by the high installation stress.
Since it can be bent at will and the internal stress generated by bending under the condition of rated bending radius is small, it can bring great convenience to the installation work and also plays a certain role in ensuring the safe operation of the pipeline system.
Scope and Purpose:
Since the main parts of the hose are made of austenitic stainless steel, the excellent temperature resistance and corrosion resistance of the hose are guaranteed. The working temperature of the hose is wide, ranging from -196 to 600 degrees. Corrosion of the medium passing through the pipeline Select the appropriate stainless steel grade to ensure the corrosion resistance of the hose.
1. The metal hose is made of 1CR18NI9TI stainless steel as a whole, which has strong corrosion resistance.
2. The hose body is hydroformed by thin-walled stainless steel body, which has strong flexibility, elasticity, strong bending and anti-vibration ability, and the reinforced protection of the braided mesh sleeve makes it have a higher pressure bearing capacity.
3. The connection at both ends of the hose can also be made into other connection methods other than thread and flange standards, which are convenient for connection and use.
4. This product is not only suitable for matching with rotary joints, but also widely used in flexible connections for conveying various fluid media.
Corrosion resistance, high temperature resistance, low temperature resistance (-196℃~+420℃), light weight, small size and good flexibility. Widely used in aviation, aerospace, petroleum, chemical, metallurgy, electric power, paper, wood, textile, construction, medicine, food, tobacco, transportation and other industries.
1. Flexible hose between metal hose pitches and small bending radius.
2. The metal hose has good flexibility, no blockage or stiffness.
3. The metal hose has light unit weight and good caliber consistency.
4. The metal hose has good flexibility, repeated bending and flexibility.
5. The metal hose has good corrosion resistance and high temperature resistance.
6. The metal hose is anti-rat bite and wear-resistant, preventing the internal wires from being worn.
7. The metal hose has strong bending resistance, tensile performance and lateral pressure resistance.
8. The metal hose is soft and smooth, easy to thread, install and position.
9. There are many hose joints for metal hoses, which are easy to connect with instruments and equipment.
Installation requirements:
Although metal hoses can be compressed and stretched, if they are not installed in the correct position, they will break quickly and reduce service life.
The hose can be installed horizontally, vertically or obliquely. The most ideal state is vertical installation. At the same time, it should be avoided to be installed near the wheels, and a baffle can be added if necessary.
Generally, metal hoses can be divided into three lengths: the first is the compression length, that is, the length when the hose is compressed to the limit position; the second is the installation length, which is in the middle position of half of the maximum displacement The length of the hose; the third is the stretch length, the length of the hose when it is stretched to the maximum limit.
When installing the hose, the hose should be in the middle position, which is the so-called installation length. When installed in this position, the hose can have two moving directions when it is subjected to axial load. Otherwise, if it can only move in one direction, the strength of the metal hose will be affected and the service life will be reduced.
In the actual installation process, considering that using a ruler to measure the length of the hose according to the calculation result and then installing it may affect the production efficiency, some foreign manufacturers install the ruler directly on the hose, and cut the ruler off after installation.
1. When choosing metal hoses, please choose a metal hose with a loose flange at one end as far as possible for the convenience of installation.
2. The surface of the metal hose should be protected during electric welding at the construction site to prevent welding slag and arc ignition from burning the metal hose.
3. It is strictly forbidden to twist and install the metal hose.
4. It should not be bent along the root of the metal hose, and there should be no dead bend.
5. The medium passed through must not be corrosive to the bellows material, and the chloride ion content in the medium should be less than or equal to 25PPM
6. Strictly install as shown in the correct installation method. (see installation guide)
7. It is strictly forbidden to mechanically damage the flange sealing surface.

List of metal hose joints:
- 304 Metal Hose

Classification	Nominal ID(DN) (mm)	Min.ID (mm)	Max.OD (mm)	OperatingPressure(PN)		Proof Pressure(PS) (MPa)	Burst Pressure(Pb) (MPa)	Min.bend radius
Classification	Nominal ID(DN) (mm)	Min.ID (mm)	Max.OD (mm)	MPa	Psi	Proof Pressure(PS) (MPa)	Burst Pressure(Pb) (MPa)	Static state(Rj)(mm )	Dynamic state(Rd)(mm)
High pressure	4 6 8 10 12	2.5 4.5 6.5 8.5 10	8.5 12 14 16 20	35 23	5071 3332	1.5PN	3PN	≥ 10DN	≥ 2Rj
High pressure	14 18 20 25 32	12 16 18 22 30	22 26 28 34 42	21 17 15 10 7	3043 2463 2175 1449 1014		3PN
Medium pressure	4 6 8 10	2.5 4.5 6.5 8.5	8.5 12.5 14.5 16.4	10	1449		4PN
	12 14 18	12 14 18	20 22 26	8.0	1159
	20 25	20 24	28 34	6.4	927
	32 40	32 40	42 52	4.0	579
Low pressure	4 6 8 10	4 6 8 10	8.5 12 14 16	2.5	362
	12 14 18 20	12 14 18 20	20 22 26 28	1.6	231
	25 32	24 32	34 42	1.0	144
	40 50	40 50	52 64	2.5	362
	75 100	75 102	92 122	1.6	231
	125 150	125 150 200 250	161 193 252 302	1.0	144
	200 250	125 150 200 250	161 193 252 302	0.8	116	Note: PN, PS, Pb are all values at 20°C. Note: PN, PS, Pb are all the number at 20℃