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Process and requirements for obtaining explosion-proof certificate of ultrasonic thickness gauge

The basic process of applying for the explosion-proof certificate at Zhongnuo Testing is to provide product manuals for customers. Firstly, Zhongnuo provides preliminary evaluation. Zhongnuo provides preliminary opinions on the explosion-proof certification mark, and Zhongnuo collaborates with customers to determine th……

The main differences and connections between explosion-proof qualification certificate and explosion-proof 3C certification

The main differences and connections between explosion-proof qualification certificate and explosion-proof 3C certification are as follows: 1. Different product ranges. Both explosion-proof qualification certificate and explosion-proof CCC certification are certification requirements for explosion-proof equipment. Whet……

Certification bodies and laboratories for explosion-proof CCC certification

Not all institutions can do explosion-proof 3C certification, there are designated certification institutions and laboratories. At present, there are six designated issuing institutions for the first batch of explosion-proof electrical CCC certification certificates announced by the State Administration for Market Regu……

What is the relationship between explosion-proof certification, explosion-proof qualification certificate, and explosion-proof 3C certification?

Explosion proof certification: Explosion proof certification is the process of determining that equipment meets the requirements of explosion proof standards, conducting type tests and applicable routine tests, and issuing relevant certificates of conformity. Explosion proof certificate: a document used to determine wh……

Is the execution standard for explosion-proof qualification certificate and explosion-proof 3C certification the same?

Since October 1, 2019, some explosion-proof electrical equipment has been included in the national mandatory product certification catalog, and everyone is unclear about the relationship between the original production license, explosion-proof qualification certificate, and explosion-proof 3C certification. Below is a ……

Example of Changes in Coal Safety Certification Mark in the New GB/T3836 Standard

a) The mining explosion-proof type (Ex d I Mb) has been changed to the mining explosion-proof type (Ex db I Mb); b) The mining explosion-proof and pouring sealing type (Ex d mb I Mb) has been changed to the mining explosion-proof and pouring sealing type (Ex db mb I Mb); c) For equipment such as explosion-proof and int……

Example of explosion-proof signs in the new version of GB/T3836 standard

Example of explosion-proof marking: Ex ib I Mb Ex: Electrical equipment marking for explosion-proof gas environments ib: Protection type is intrinsic safety type I: Coal mine gas environment Mb: Equipment protection level, can be used in Zone 1 Ex db eb II C T6 Gb Ex: Electrical equipment marking for explosion-proof ga……

What are the meanings of Class II and Class III explosion-proof certificates? What conditions are required for processing?

Explosion proof electrical equipment is divided into Class I explosion-proof certificate, Class II explosion-proof certificate, and Class III explosion-proof certificate according to different usage locations. The Class I explosion-proof certificate we refer to is a certification certificate used for underground equipm……

What is the qualification certificate for installation, maintenance, and repair of explosion-proof electrical equipment?

Many institutions engaged in engineering construction, especially those involved in installation and construction in explosive locations, require their owners to provide relevant explosion-proof electrical installation and construction qualification certificates, which we refer to as "explosion-proof electrical eq……

The difference between explosion-proof certification and explosion-proof CCC certification for two types of explosion-proof product certification

Since the announcement issued by the State Administration for Market Regulation in July 2019 regarding the implementation requirements of the mandatory product certification management for explosion-proof electrical and other products, it has been almost two years now. Many enterprises producing explosion-proof electri……