In order to strengthen the safe use and management of the shield machine and standardize the use of the shield machine to prevent and reduce the occurrence of safety accidents in the shield machine, the Beijing Shield Machine Professional Committee recently held the â€œ2011 China Shield Technology Symposiumâ€ from Beijing. Experts of shield construction companies such as Shanghai, Shenzhen, Guangzhou and Tianjin believe that as the main machine for subway construction, the shield machine should not only be properly managed and used, but also must have methods and measures for safe use management.

It is reported that at present, there is no systematic inspection and repair standard for shields during construction, and the skills of operators are not uniform. Not only does it lack the safety management of shield machines, but it also lacks measures to ensure construction safety. The establishment of the Beijing Shield Machinery Professional Committeeâ€™s board of directors can provide in-depth discussions on issues that need to be urgently addressed in the industry, including the pre-job skill training including shield machine operators, and shield tunnel technology academic exchanges and seminars. The essay and the establishment of the talent pool for shields provided technical support for the implementation of the â€œAdministrative Provisions on Strengthening the Safe Use of Shield Machinesâ€ in Beijing on September 1.

Nickel And Nickel Alloys

Nickel is a versatile, highly corrosion resistant element that will alloy with most metals. Due to its corrosion resistance, nickel is used to maintain product purity in the processing of foods and synthetic fibers. It is highly resistant to various reducing chemicals and is unexcelled in resistance to caustic alkalies. In addition, nickel has good thermal, electrical and magnetostrictive properties. Relatively high thermal conductivity of this metal has lead to its frequent use for heat exchangers

Commercially pure or low-alloy nickel may contain very small amounts of alloying elements to absolutely none. By contrast nickel alloys contain significant amounts of added elements. Nickel and nickel alloys are both non-ferrous metals that are useful in a range of applications, most of which involve corrosion resistance and/or heat resistance.

Nickel Alloy alternatives to trademark [brand" names.

Alloy C276 alternative to Hastelloy C-276 and Hastelloy C
Alloy B-2 alternative to Hastelloy B-2
Alloy C-22 alternative to Hastelloy C-22
Alloy X alternative to Hastelloy X and Inconel HX
Alloy 20 alternative to Carpenter 20 and Incoloy 20
Alloy718 alternative to Inconel 718
Alloy 800 alternative to Incoloy 800
Alloy 800H/HT alternative to Incoloy 800H/HT
Alloy 400 alternative to Monel 400
Alloy K-500 alternative to Monel K-500
Alloy 625 alternative to Inconel 625
Alloy 600 alternative to Inconel 600
Alloy 601 alternative to Inconel 601

Nickel Alloy Boiler Tube,Nickel Alloy Seamless Tube,Astm Nickel Alloy Boiler Tube

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