Pipe knowledge: Why most of the seamless pipe is not fixed

Seamless steel pipe in the standard (such as API5L, ASTMA106, etc.), there are fixed-length and variable-length, and some special items require length, but also for storage and transportation neat, but most of them are not fixed, because the production process due to Wall thickness, bil.......

Common five types of pollution-free pesticides

The term “no pollution” has been ingrained in the hearts of ordinary people. What are the common pollution-free pesticides? In addition to the biological pesticides often mentioned in Xiaobian? Today Xiaobian simply summarizes five common pollution-f.......

Near net forming ability of steel-copper alloy bimetal sliding bearing

New aluminum alloy research and development

[China Aluminum Network] In recent decades, the world aluminum alloy is developing in the direction of high-performance aluminum alloy of new materials such as high strength and toughness, in order to meet the needs of aerospace and military industry and some special industrial sectors; at .......

Several types of mineral elements essential to sow feed

The feed of the sow is mainly the seed of the plant, and the inorganic salt content of the plant is relatively low, which cannot meet the needs of the pig. In particular, the pig that grows faster on the cement floor of the fully enclosed pig house must be supplemented to achieve The balanc.......

Servo valve working principle and function

Electro-hydraulic servo valve is mainly used for electro-hydraulic servo automatic control system, its role is to convert the low-power electrical signal into a high-power hydraulic output, through the hydraulic actuator to complete the automation of mechanical equipment.
The .......

Wear protective tools to prevent occupational diseases

Wuhu City Health Supervision Center Zhongda Electronics Luhu Co., Ltd. held a publicity week with the theme of “Prevention and treatment of occupational diseases and happiness, 10 million homes”. It mainly focused on employing units and workers to carry out.......

5 yuan "hard hat", how can we keep safe?

Go down one foot, accompanied by a "bang" sound, the helmet was recessed into a pit. On June 17th, when the reporter supervised a company in the province with the security supervision department, he witnessed the frightening security risks of the 5 yuan infer.......

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