Q:How to replace natural gas hose? Steps?

Replace the natural gas hose first pressure relief, and resolutely put an end to the operation with pressure;According to the connection way of the hose, if it is O ring sealed, just tighten it directly;If it is cone thread, it can be wrapped with raw material tape or sealant.

Q:Laboratory condensate water pipe must use rubber tube, shall not use latex tube reasons

Hydraulic test verification pressure test: Test hose and assembly under verification pressure, continue 30s-60s, whether to produce leakage, deformation and damage. Compression deformation test: keep 1 minutes under the specified pressure (work pressure, verification pressure or other pressure below the proof pressure), measure the length and diameter of the hose, twist angle and bend. Bursting pressure test: Determination of the pressure at which the hose burst during the specified step-up rate.

Q:What is the difference between the precast beam of the bridge and the method of pulling out the rubber tube after pouring the concrete? What's the difference between design and calculation?

Corrugated pipe is included in the design of the amount of engineering, the role is: reserved strand space. Its length is calculated when the work length of the steel strand.

Q:The rubber is sheathed on the metal cylinder. How can it be connected?

If you describe it, it is recommended that a soft binder such as 704 silicone gel will be used to prevent shock absorption and separation. Metal surface to rust treatment, clean can be coated adhesive, rubber cover surface is best polished, degreasing treatment effect is good!

Q:How to determine the parker381 hose joint?

Parker 381 series hose comes with Parker 43 series hose connector. Because the type, material, and surface treatment of hose joints are indistinguishable from the naked eye, these factors directly affect the quality of the hose assembly:1., if the factory internal judgments, according to Parker provided geometric parameters to determine;2., if purchased on the market, it is best to choose Parker authorized dealer (Parker authorized dealer has Parker's power of attorney);

Q:Method for inserting glass tube into rubber tube when assembling instrument

If the outer diameter of the two glass tube to be connected is greatly different, the method can be used repeatedly to connect the glass tube into a channel or to be connected by a socket inserting method.In addition to the use of rubber sheathed outside the glass tube, can also be used for plastic pipe glass tube is sheathed, however, due to the elastic rubber pipe plastic pipe as well, so for sheathing plastic pipe with small diameter should be equal to the outer diameter of the glass tube.In addition, the use of plastic pipe sleeve glass tube should be adopted heat law, that is, the plastic pipe heating expansion and glass tube connection, and should not be rigidly inserted.Finally, because of the poor elasticity of the plastic tube, it is easy to age, harden and brittle, so when the glass pipe is connected with the plastic sleeve, the sealing measures must be adopted for the sleeve joint, and the sealing is usually done by gluing or waxing.

Q:What are the gas hoses?

The stainless steel is expensive, 40 yuan set.The rubber is cheap, 10 yuan a set.Where do you come from? I don't know. In our Shanghai gas, this price includes the labor cost of the installation to you. In other words, fix it directly for you.

Q:The difference between the rubber pipe and PE pipe

The characteristics of the rubber tube has physiological inertia, UV resistance, ozone resistance, resistance to high temperature (-80 to 300), high transparency, strong resilience, resistant to compression permanent deformation, oil resistance, impact resistance, acid and alkali resistance, wear resistance, flame resistance, voltage, electric.

Q:Standard for implementation of type KXT-1 rubber joints

It is divided into 3 kinds: flange type, fixed flange type and thread type by connection. The structure can be divided into 5 kinds: single sphere, double sphere, different diameter body, bent sphere and wind pressure coil. A tubular rubber component is composed of inner and outer layers of rubber, cord and steel ring, which is vulcanized and molded and then combined with a metal flange or a parallel joint.

Q:What glue can glue rubber tube?

Location: in the face and then drop a little sticky rubber JL-330 iron speedglue, immediately bonded, and keep to the hardening, hardening time ranging from a few seconds. About 30 minutes to reach practical strength, 24 hours after the maximum intensity.