Shenzhen Zhongnuo Testing Technology Co., Ltd. is based in South China and specializes in explosion-proof certification and coal safety certification application consulting services, offering one-stop explosion-proof technology consulting services.
Is product explosion certification the same as explosion-proof certificate of conformity?
Many customers inquire about the difference between obtaining explosion-proof certification and a certificate of conformity for explosion-proof products.
Flameproof certification and flameproof approval are two distinct concepts. Once a product undergoes flameproof certification, the resulting document is the flameproof approval.
Explosion-proof certification is the process, and the explosion-proof certificate is the result.
So the client mentioned that the product needs to have a防爆 certification or防爆qualification certificate.
The product must pass the explosion-proof standard tests and meet the requirements to obtain an explosion-proof certification.
Explosion-proof certifications can be categorized according to different protection types, such as intrinsic safety, flameproof, positive pressure, and encased types.
ZhongNuo Inspection boasts a team of explosion-proof engineers who can provide early-stage design services for explosion-proof circuits and structures.
Assist companies in preparing the required drawings, documentation, and manuals for explosion-proof certifications, such as corporate standards, to facilitate the convenient acquisition of explosion-proof compliance certificates.
If you require certifications in this area, feel free to send us a private message!

Certificate of Compliance for Explosion-Proof Products: Expiration and Renewal Issues
Currently, the validity of domestic explosion-proof certification is 5 years from the date of issuance. If the Certificate expires, you can choose to renew or replace it. When the expiration of the enterprise's explosion-proof certification is approaching, the enterprise should provide an application letter for a replacement within three months before or after the expiration date, and should bring the following documents for a new application.
International explosion-proof certifications, such as ATEX and IECEx, are valid for a specific period. This is due to their certification process, which combines type testing with a factory production quality system review, thereby ensuring the validity of the Certificate.

Flammability Dust Environment Explosion Proof Certification Standard:
GB/T 3836.1-2021 Explosive Atmospheres, Part 1: Equipment - General Requirements
GB/T 3836.4-2021 Explosive Atmospheres, Part 4: Equipment protected by intrinsic safety "i"
GB/T 3836.5-2021 Explosive Atmospheres, Part 5: Equipment protected by positive pressure enclosure “p”
GB/T 3836.9-2021 Explosive Atmospheres – Part 9: Equipment protected by encasing of type “m”
GB/T 3836.31-2021 Explosion-proof Environment, Part 31: Equipment protected by dust ignition-proof enclosures "t"

What standards are used for explosion-proof certification? What are the technical requirements?
An explosion-proof type is a type of explosion-proof design for electrical equipment.
The housing is designed to withstand explosive mixtures entering through the housing joint surfaces or structural gaps, and to withstand internal explosions without damage.
And ignition of an explosive gas atmosphere formed by one, several gases or vapors.
Explosion-proof casings must have both explosion-proof and anti-explosion capabilities. Generally, the casings of explosion-proof products are rather bulky, suitable for products and equipment designed for fixed installation and use.
Explosion-proof shell design essentials: width of the隔爆 joint surface, gap, and roughness.
Design requirements for explosion-proof three elements vary depending on the different explosive gas environments of Class I mining, non-mining Classes IIA, IIB, and IIC.
Refer to the design standards of GB/T3836.1 and GB/T3836.2 for specifics.
Chinano Inspection has long been focused on explosion-proof product design, testing, and certification services.
Our team in the explosion-proof field is well-versed in the requirements of explosion-proof standards.
We offer explosion-proof housing design, drafting, modification guidance, certification agency services.
If you have a need for this as well, feel free to send us a private message anytime!
Explosion-proof Certification Application Consulting Service - Shenzhen Zhongnuo Testing Technology Co., Ltd.