男吻我腿中间的那个位置,女主快穿就被肉到尾

沧州晨风建材有限公司为您免费提供球墨井盖球墨铸铁井盖报价雨水篦子规格等相关信息发布和最新资讯,敬请关注! | Site Map Cangzhou Chenfeng Building Materials Co., Ltd. provides you with free information and latest information about nodular manhole covers , nodular cast iron manhole covers , rainwater raft specifications, etc. Please stay tuned!
Cangzhou Chenfeng Building Material Co., Ltd.

categories of news

contact us

Cangzhou Chenfeng Building Material Co., Ltd.

Address: Monan Industrial Zone, Xian County

Consulting Hotline: 0317-4517918

QQ: 493660593

Your location: Home > News > Details

How is the ring of nodular cast iron manhole cover detected?

2019-11-14 http://fisherbuses.com/news/388.html

Ductile iron manhole covers are often seen on our roads, which brings us a lot of convenience. For the safety of the use of nodular cast iron manhole covers , we need to inspect them after installation. It can only be used normally if it is safe, so how do we check it? Let's introduce it below.
The inspection of ductile iron manhole covers is very important for the detection of well circles. When inspecting nodular cast iron manhole covers, we must check the quality and size of nodular cast iron manhole covers in accordance with relevant regulations. There is also the inspection of the flatness of the ductile iron manhole cover. The inspection time can be carried out by using special tire inspection tools. Nodular cast iron manhole covers will not sway and rattle after installation, and the distance between the manhole cover and the frame cannot exceed 1 mm. After the nodular cast iron manhole cover is controlled in the category of manhole cover size, the depth is required to be 40mm, and the time for detecting bolt holes should be inspected one by one with a special tool. We have to follow the steps above to ensure our safe use.

The above content is some of the relevant knowledge of nodular cast iron manhole cover we introduced to you, let's introduce it here for everyone today. If you want to know more about the products, please continue to pay attention to our website. We will continue to update our product knowledge, or you can call us for consultation, we will try our best to meet your needs.

ç ƒå ¢ ¨äº • ç ›–厂家

NEXT: How can we prevent the rainwater mule from deforming?
Next: Why are spherical ink well covers made round?

Related productsmore >>

  • 球墨铸铁井盖厂
    Ductile Iron Manhole Cover Factory
  • 球墨铸铁井盖厂家
    Ductile iron manhole cover manufacturers
  • 球墨铸铁井盖生产厂家
    Ductile iron manhole cover manufacturer
  • 球墨铸铁井盖制造厂
    Nodular cast iron manhole cover factory
  • 球墨铸铁井盖公司
    Ductile Iron Manhole Cover Company
  • 重型球墨铸铁井盖
    Heavy Ductile Iron Manhole Cover