SAE 100 R7/EN856 R7 DN38

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DNHose I.DHose O.DWorking PressureBurst PressureMinimum Bend RadiusWeightLength
inchmmmmMPaPsiMPaPsimmkg/mmetres
31/83.38.517.2250068.910000130.03720~100
53/164.810.820.7300082.712000200.06820~100
61/46.413.020.7300082.712000330.08520~100
85/167.915.117.2250068.910000460.10320~100
103/89.517.015.5225062.19000510.14120~100
131/212.720.713.8200055.28000760.21020~100
193/419.027.18.6125034.550001270.28720~100
25125.4346.9100027.640002030.54220~100

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Q:Classification of metal hoses
Corrugated metal hose (abbreviated bellow) is a kind of high quality flexible pipe in modern industrial pipeline. The utility model is mainly composed of a corrugated pipe, a net sleeve and a joint. The inner pipe of the utility model is a thin wall stainless steel corrugated pipe with a spiral shape or an annular waveform, and the mesh cover of the outer layer of the corrugated pipe is made of stainless steel wires or steel strips according to certain parameters. The joint or flange at the ends of the hose is matched to the connector or flange of the customer's pipe.
Q:What are the standard numbers for hose couplings? What standards are they used to accomplish?
Hose: a tubular rubber product for the delivery of gases, liquids, slurries, or granular materials. It is composed of inner and outer rubber layer and skeleton layer. The material of skeleton layer can be made of cotton fiber, various synthetic fiber, carbon fiber or asbestos, steel wire and so on.
Q:The basement of submersible sewage pump outlet pipe installation need and flexible rubber joint is not installed? Can not?
Gu called it a shock throat. It not only plays a role in noise reduction, but also protects the pump from the adverse effects of vibration. Rubber joints belong to GB products, the price is not expensive. Recommended installation.
Q:How long is the service life of the gas hose?
The protection work is very important, regular replacement of gas hose and make use of the gas hose gas pipeline safety in general, the gas hose has a life span of two years, usually pay more attention to inspection / check whether the aging hose, wear, corrosion or bad connection, avoid leakage.
Q:High pressure hose K type joints KJR32 and KJR31.5D what is the difference between ah, please give us a answer,
K type joint has the distinction between national standard and German standard. In general, 32 of the tubes are 1 1/4 inches, and the K type mine connections are also 1 1/4, but there are two methods of KJR32 and KJR31.5D. But KJR31.5D, D means that the inner diameter is 1 1/4 inches.
Q:What kind of material does hose screw protection cover have? What are their advantages and disadvantages?
The utility model relates to a pipe protecting sleeve, which is a new product replacing the traditional metal protecting spring used for the protection of traditional rubber hoses. Alias: hose sheath, rubber tube outside protection special nylon spiral sheath, etc..
Q:Do you know the inner diameter of the hose for household shower hose is the same? Can different brands of shower and hose mix?
Yes, it's easy to have this problem with sprinkler tubes. Because the hose and shower head inside and outside the effective length of the difference between the thread is too large, resulting in gaskets did not play a role in sealing, multi pad 1-2 pads can be, the gasket can be purchased at the hardware store to buy
Q:Is rubber tube harmful to drinking water?
If it is a constant water, okayIf you are in the tube for a period of time, it is best to put on the water, then, after all, rubber is not a food container, some of the inside material will gradually dissolved
Q:What is the method of making large diameter rubber joint?
Method for making large caliber rubber parts:Mold making: external shell, internal steam box, steam, internal core, hydraulic cylinder do support (two years earlier, with Jack) and high strength rubber cord wrapped into the mould, after high-temperature steam curing, eventually forming.
Q:Rubber tube in the production process need to wrap cloth, in order to finalize the design, I want to know what cloth is winding cloth, what is the specification, please god!
Polyamide (nylon) water cloth with high strength nylon filament as raw materials, the introduction of the Swiss high-speed shuttleless loom woven, has the characteristics of high density, fine texture, smooth surface, not deformation, surface sulfide even shrinkage, fracture strength, long service life, make good products and rubber skeleton material good adhesive effect the appearance of black, wove neat, shallow indentation.

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