Allowable standard of cable tray thickness

2021/10/0418:43:09 news 1957

cable tray The allowable standard content comes from "T/CECS 31-2017 Steel Cable Tray Engineering Technical Regulations" Part 3.5 Cable tray material and load characteristics _

img

3.5 Material and load characteristics

3.5.1 The pallet and ladder frame should be made of cold-rolled steel plate. When the plate thickness is greater than 2mm, hot-rolled steel plate can be used. Its material should meet the requirements of Q235 steel in the current national standard "Carbon Structural Steel" GB/T700, and "Carbon Structural Steel Cold Rolled Steel Strip" GB/T716, "Carbon Structural Steel and Low Alloy Structural Steel Hot Rolled Relevant regulations of "Thin Steel Plate and Steel Strip" GB912 and "Continuous Hot-dip Galvanized Steel Plate and Steel Strip" GB/T2518.

3.5.2 The material of color coated steel plate pallet and ladder frame shall comply with the relevant regulations of the current national standard "Color coated steel plate and steel belt" GB/T12754.

3.5.3 The material of the mesh metal cable tray shall comply with the relevant regulations of the current national standard " high-quality carbon structural steel " GB/T699.

3.5.4 When the cable tray is made of stainless steel, stainless steel with the material designation 06Cr19Ni10N, 022Cr19Ni10N or 022Cr17Ni12Mo2 shall be used. 3.5.5 When the safe working load (SWL) is met and the length of the straight section is 2000mm, the minimum allowable thickness of each type of pallet plate shall comply with the values listed in Table 3.5.5-1. Table 3.5.5-2, and each type of ladder The minimum allowable thickness of the frame plates shall comply with the values listed in Table 3.5.5-3 to Table 3.5.5-5.

p11p img4pimg

_p5

news

In the misalignment incident, Tian Jing is the focus of today. Tian Jing is Guo Wei’s wife and Xu Min’s daughter-in-law. She has millions of fans online and has many live broadcasts online and has many fans. Tian Jing was angrily scolded by netizens and had already purchased the

Tian Jing suspected that she bought 3 million yuan per property, and her child had transferred to school, and netizens angrily revealed her "true face"

06/28 1013

Although "Double Eleven" has not arrived yet, major online shopping platforms have already started pre-sale of products in advance. It is worth mentioning that although online shopping is convenient and "Double Eleven" saves money, the quality of online shopping is uneven. Theref

The "deadly thermos cup" exposed by CCTV, the precipitation of heavy metals is harmful to health. How to buy it?

06/28 1502

#Toutiao Creation Challenge# The mother and son’s supper refused to be “fake and exquisite”. Netizens: This is how life in a small county town is! Some time ago, I posted an article about my child’s classmates coming to my house for dinner. Many netizens commented that I was too

The mother and son refused to "fake and exquisite" supper, netizens said: This is how life in a small county town is like this

06/28 1486

#Autumn Life Check-in Season#The temperature drops rapidly in autumn and winter, and many people wear thick cotton coats, and even so, it is still difficult to resist the cold. For friends who are afraid of the cold, it is really hard to endure. They can’t wait to be wrapped in a

It is recommended to prevent cold from autumn and winter. It is recommended to eat 6 types of foods frequently to warm the body and moisturize the dryness and drive away the cold, and also help improve immunity.

06/28 1159

No one can escape the natural law of birth, old age, sickness and death. However, as long as you follow some good habits, you can grow up against the trend and make yourself younger and younger. 1. Reasonable diet. In the past, there was a lack of nutrition, and in the autumn har

10 good habits to get younger and younger as soon as you develop them, they can change your life

06/28 1560

As we all know, taking a concubine, also known as filling a house, means that a woman who is not a wife, is a product of polygamy in the old era. But recently, an open "concubine" incident happened in public: several people led by a woman to the entrance of a hospital in Xuzhou,

It is not worth imitating for her husband by pulling a banner at the entrance of the hospital: it may be illegal and not wise enough

06/28 1601

In the 1960s, there was an unprecedented outbreak of malaria, and our country was not immune to tens of millions of infections. The World Health Organization was helpless.

She tried medicine with her body and used a small grass to change the fate of mankind. She won a huge prize and was questioned. She was calm but was calm.

06/28 1499