Monthly Archives: January 2022

Black steel pipe is uncoated steel, also known as black steel. The dark color comes from the iron oxide formed on its surface during the manufacturing process. When a steel pipe is forged, a black oxi...

Welding process of oil casing pipe (1) Selection of welding method: 80%Ar+20%CO2 gas shielded welding. Selection of welding data: ER55-G welding wire is used, with a diameter of 3.2mm. Welding paramet...

Inspection of geometric dimensions and shape of steel pipes: 1. Steel pipe wall thickness inspection: micrometer, ultrasonic thickness gauge, no less than 8 points on both ends and record. 2. Inspec...

What are the specific contents of seamless steel pipe acceptance? Inspection of geometric dimensions and shape of steel pipes: ①Wall thickness inspection of steel pipe: micrometer, ultrasonic thic...

In order to maintain the heating temperature of the petroleum casing pipe during rapid heat treatment, the heating temperature is evenly distributed along the longitudinal direction of the steel to ob...

Why is ERW steel pipe the first choice for urban gas pipeline network? The main advantages and disadvantages are: (1) High strength (large carrying capacity); (2) The wall thickness is uniform and lig...

Comparison of pipe materials used in urban gas pipeline network: At present, the urban gas pipeline network mainly uses ERW pipes, cast iron pipes and polyethylene (PE) pipes. From the perspective of ...

How to accept the ERW pipe? 1. Product quality certification document requirements 1) Welded steel pipes should have factory quality certification documents Including: product certificate, material ce...

In the process of rapid heat treatment of steel induction heating, horizontally inclined roller rotation mechanism. The inclination of the device of the roller is wide and the inclination of the devic...

The atmosphere that causes decarburization on the surface of Q345B seamless steel tubes is mainly oxidizing gases such as oxygen, water vapor and carbon dioxide. When these oxidizing gases come into c...