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.
Why choose tempered glass for explosion-proof transparent parts?
Transparent components are a crucial material for explosion-proof electrical equipment. When selecting transparent components, customers always inquire about the material to be used? Can it be glass? Can it be plastic?
Below, Shenzhen Zhongnuo Testing Technology Co., Ltd. explains to you.
There is a clear specification in GB/T3836.1 for thermal shock tests on transparent parts, which is to verify the thermal stability of glass under rapid cooling conditions. Currently, toughened glass is a material that meets this requirement and offers a high cost-performance ratio.
普及 the fact that tempered glass, after being heated and then quenched, forms a uniform layer on the surface
The compressive stress layer counters the tensile stress generated on the surface during rapid cooling, thus, qualified tempered glass, even when subjected to stress from rapid cooling, will have the compressive stress to offset its effects.

Certification standards for explosion-proof equipment used in environments with explosive gas:
GB/T 3836.1-2021 Explosive Atmospheres – Part 1: Equipment – General Requirements
GB/T 3836.2-2021 Explosive Atmospheres Part 2: Equipment protected by a flameproof "d" enclosure
GB/T 3836.3-2021 Explosive Atmospheres Part 3: Equipment protected by an "e" type of increased safety
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 enclosures "p"
GB/T 3836.6-2017 Part 6: Equipment protected by "o" type immersion for explosive atmospheres
GB/T 3836.7-2017 Explosive Atmospheres, Part 7: Equipment protected by filling with sand of type “q”
GB/T 3836.8-2021 Explosive Atmospheres, Part 8: Equipment protected by "n" type protection
GB/T 3836.9-2021 Explosive Atmospheres, Part 9: Equipment protected by "m" type encapsulation

Does the explosion-proof certification include the explosion-proof 3C certification?
To put it this way, in China, explosion-proof certifications are divided into Explosion-proof 3C Certification and Explosion-proof Compliance Certificate Certification.
As of October 1, 2009, a portion of explosion-proof electrical equipment was included in the CCC certification list, which is a mandatory product certification. Products on the list must apply for explosion-proof 3C certification, while explosion-proof products not on the list must apply for explosion-proof qualification certification.
This falls under different certification models. The explosion-proof 3C certification requires both "product testing and factory audit." It's not just about product testing; an on-site audit of the production facility is also necessary. Only after the product testing and factory audit are both passed can the CCC certificate be issued.
A防爆certification requires product testing; once the testing is passed, a防爆certificate can be issued frequently.
When inquiring, customers should first confirm the product type, then decide on the certification model.
For more details, please contact Shenzhen ZhongNuo Testing Technology Co., Ltd. directly!

Explosive-proof certification standards for combustible dust environments:
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 Explosion-Proof Environments, Part 5: Equipment Protected by Positive Pressure Enclosures "p"
GB/T 3836.9-2021 Explosive Atmospheres Part 9: Equipment protected by a “m” type of encasement
GB/T 3836.31-2021 Explosive Atmospheres, Part 31: Equipment protected by dust-protection enclosures "t"
Explosion-Proof Certification Application Consultancy Services - Shenzhen ZhongNuo Testing Technology Co., Ltd.