nansteel Articles

Long-term storage method of welded pipe and preventive measures for...

In daily work and production, welded pipes stored for a long time should be inspected regularly. The exposed welded pipes should always keep the surface clean, remove dirt, and store...

What are the technologies related to oil and gas pipelines?

Compared with road transport, rail transport, water transport, and air transport. Pipeline transportation has become the main means of oil and gas transportation due to its advantages of low transportation...

What is API 5L Petroleum Casing?

API is the abbreviation of American Petroleum Institute. Founded in 1919, API is the first national business association in the United States. An important task of API is to be...

Causes of cracks in welded pipe processing

The causes of longitudinal cracking of welded pipes are various fields, including raw material factors and manufacturing process factors. If the plastic deformation of the welded pipe itself is poor...

How to identify fake and inferior cs seamless pipes?

CS seamless pipe is a steel pipe that is perforated by the whole round steel and has no weld seam on the surface. According to its production process, it can...

The production process of a500 square tube

A500 square tube is a hollow long strip of steel, also known as flat tube, flat square tube or square flat tube. When the bending and torsional strength are the...

Solution treatment of cs seamless pipe

Austenitic seamless pipes are softened by solution treatment. Usually, the seamless pipe is heated to a temperature range of 950-1150°C and held for a period of time, so that the...

Surface treatment of spiral steel pipe

It is a welded steel pipe made of strip steel coil as raw material, extruded at regular temperature, and welded by automatic double-wire double-sided submerged arc welding process. There are...

Quality inspection of welded pipe after welding

Welded steel pipe refers to a steel pipe with seams on the surface that is welded after bending and deforming a steel strip or steel plate into a circular, square...

Standard Specification for Welding Procedures for Welded Pipes

Welded steel pipe is seamed steel pipe, also known as welded pipe. Its production is the process of bending the tube blank (steel plate and steel strip) into a tube...