Sun. Jul 21st, 2024
wall of the special heat-tracing cable scarf steel pipe is

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6. The joint shall be foamed and insulated on the spot. 7. The welding of jacket pipe should follow the principle of perfecting means and strengthening acceptance. two。 The construction operation of casting method should meet the following provisions: 1) the sundries and oil stains on the joint pipe should be removed before welding. 8. Sand filling, soil return 9. Engineering acceptance problems that should be paid attention to in the design and construction of polyurethane thermal insulation directly buried heating pipe: OK. The size and structure of the pipe for laying the heat-tracing cable is exactly the same as that of the ordinary heat preservation pipe. The outer wall of the special heat-tracing cable scarf steel pipe is laid in parallel with it, and the point heat is used to heat the medium through the steel pipe. When the heating power of the cable is just turned on, the resistance of the PTC memory material in the cable increases gradually with the increase of temperature, so the working current and electrothermal power also gradually decrease, until the heat loss of the heating power compensation system makes the temperature of the system in a stable state.

# # soft scarf # # Liu Shishi # wearing a dark coat, plush bags and scarf accessories add to the warm atmosphere of winter. Zhu Zhixin # wearing a yellow lamb coat, with a checkerboard knitted scarf, a beret and curly hair show a warmer atmosphere, clever and handsome. Sun Rui # wears a black-and-white striped coat with a blue-and-white thick woolen scarf to make her look even more cold and beautiful.

You can also bring some nice napkins and take good pictures. Can also bring the usual small square scarf, gauze, shawl. Wait, they can be used not only with clothes, but also for picnics.

Second, use the shop window and red scarf radio station to publicize the knowledge of “entering the Dragon Boat Festival folklore” to the students, and introduce the Dragon Boat Festival traditional customs such as hanging white mugwort, hanging calamus, sachet, wearing purse, packing zongzi and so on from a scientific point of view, which not only let students understand the folk culture of Dragon Boat Festival, but also educate students to enhance their daily life knowledge.

When using a silk scarf to make a bag, there is another way to open it. You can use items such as bracelets and collars as handles, and then tie the scarf to the bracelet. It is also a good choice to carry it so that you can easily go out.

By admin