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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?
- Construction process, in order to avoid concrete into bellows, influence later wear steel strand, construction units generally use PVC and other rubber tube into bellows, in order to double insurance, don't let concrete into. Its length is certainly larger than the length of bellows (750mm at one end for easy operation)s
The difference between silicone tube and rubber tube
- The main performance of the rubber tube: rubber tube is non-toxic, environmental protection, physical inertia, UV resistance, ozone resistance, resistance to high temperature (-8 to 300), high transparency, strong resilience, resistant to compression permanent deformation, oil resistance, impact resistance, acid and alkali resistance, wear resistance, flame resistance, voltage, conductive properties.Scope of application: supporting electrical appliances, electronics, furniture, equipment, toys, hardware, medical equipment, sporting goods, audio, lighting, machinery, automobile and other industries.s
How can we prevent the aging of rubber tubes?
- The second is the design of the structure of the rubber products (especially damping products), has a great relationship between aging and fatigue, should avoid stress concentration! If the product is good has been produced to prevent aging, more trouble! Can be sprayed on the rubber surface, spraying insulation polymer.s
What are the types of metal hose couplings?
- DKJ jointStructure and characteristics:The DKJ card sleeve type metal hose joint can connect the steel pipe without the screw and the hose, and save the thread setting process, just screw the screw in;The metal joint is made of zinc alloy. The surface is zinc plated, sanded or chrome plated. The structure is compact and the strength is high. The steel pipe and the metal hose are connected reliably, and the appearance is beautiful;The metal fittings are jacketed to connect the metal hose to the non threaded steel tube;Suitable metal hose: JS, JSH, JSB, JSHG;Adaptation: steel thin steel wire pipe, black, tin pipe (water, gas);When choosing DKJ card type metal joint, please pay attention to the specification and size of the connecting pipe hose.s
What's the rubber sleeve of the expander?
- Expansion rubber flexible joint, installation of the flange sleeve telescopic device.s
Production process and raw material of rubber
- The relationship between tensile strength and rubber structure: a large force between molecules, such as polar and rigid groups; the molecular weight increases, increasing the fan Edward force, the chain segment is not easy to slip, the equivalent of molecules formed between physical crosslinking points with the molecular weight increased, the tensile strength increased to a certain extent reached equilibrium; microstructure the molecular structure, such as the effect of cis - and trans structure;s
The principle of the common bicycle valve
- An elastic thin edge hose is placed below to form the whole of the core. In fact, it is a one-way valve. When inflating the bicycle tyre, the compressed air in the air pump enters the valve core from the hollow part, and the elastic rubber tube is top, and the air enters the tyre.s
How to make a rubber tube requires flow
- High pressure rubber hose made of inner rubber, steel wire (braid layer), outer rubber. High temperature processing and vulcanization.s
How do you thaw frozen pipes
- During winter months, water inside plumbing can freeze and, in the worst cases, crack or burst pipes. Not all frozen pipes break, however, and you can prevent major problems by car...
what happens when pipes freeze
- Water expands when it freezes.If it freeze then the water pipe will be broken. Most piping systems allow for expansion and contraction, but only to a certain point. Once there is n...
what to do when pipes freeze
- Shut off the water immediately. Don't attempt to thaw frozen pipes unless the water is shut off. Freezing can often cause unseen cracks in pipes or joints.Apply heat to the fro...
How to fix frozen pipes
- 1.Turn off the water supply at the main shutoff valve. Open the faucet located nearest http://bestwashingmachinex.com/ to the frozen pipe to allow the water to drain as it thaws.2....
What to do when your pipes freeze
- “Frigid temperatures can lead to frozen water pipes inside of the home and costly plumbing repairs, while substantial amounts of blowing and drifting snow can impede access to fi...