国产三级片一区二区三区不卡免费观看_(凹凸)最新毛片婷婷99精品视频_97人妻无码在线视频一区_julia在线视频观看_拧花蒂尿用力按凸起喷水尿AV_国产丝袜高跟鞋AV在线播放_一个人的免费hd_亚洲古典另类卡通动漫_快看影院网 影视大全_一区二区三区无码日韩国产粉嫩

NEWS-HEBEI KERRY PIPE FITTNGS CORPOPATION

?
?
mobi
?
?
positionCurrent location:HOME > NEWS >
?

How to use carbon steel flanges correctly

With the development of long-distance pipeline construction, carbon steel flange blind plates have become an important part of pipeline pressure testing. Before and after pressure t...

2024-01-16

What treatments do carbon steel flanges undergo after quenching?

During the heat treatment process of carbon steel flanges, due to the change in microstructure, i.e. the transformation from austenite to martensite, the increase in specific volume...

2024-01-16

Cleaning knowledge of carbon steel flanges

During the heating and cooling process of carbon steel flanges, due to the inconsistency in cooling speed and time between the surface and core, a temperature difference is formed, ...

2024-01-16

How to install stainless steel flat welding flanges normally

The accessories on one side of the stainless steel flat welding flange are customized, and the fixture needs to reach the leakage point first. The key is to establish a closed chamb...

2024-01-16

Advantages of Heat Treatment Process for Carbon Steel Bends

Carbon steel elbows are an important component of long-distance oil and gas pipelines. The long-distance pipeline passes through multiple areas with complex terrain and harsh climat...

2024-01-16

The manufacturing process flow of carbon steel elbows

The production process of carbon steel elbow: Hot push forming: The hot push elbow forming process uses a one-to-one elbow pushing machine, a core mold, and a heating device to make...

2024-01-16

First 1 [2] [3] Next Last
?
?

TEL:+86 0317-6195777
Email:kairuijituan@126.com

Address:Zhenggang Road Industrial Park in Yanshan County
Url:http://dodokid.cn/en

?2024-2025 HEBEI KERRY PIPE FITTNGS CORPOPATION Copyright

Scan it

Scan it

Mobile version

Mobile version

TEL

+86 0317-6195777

(Service Time:7 x 24h)

?