According to different production methods, it can be divided into hot-rolled pipe, cold-rolled pipe, cold-drawn pipe, extruded pipe and so on. Hot-rolled stainless steel seamless tubes are generally produced on automatic tube rolling mills. The solid bille ...

The internal threads of stainless steel pipe fittings are mainly tapped through taps.The process can improve the viscosity of stainless steel pipe materials,but if you do not pay attention to some matters,during the tapping process of taps,cutting and scra ...

Plastic lined steel pipe, with galvanized seamless steel pipe and welded steel pipe as the base pipe, is lined with food grade polyethylene (PE) pipe with the same diameter as the galvanized pipe after the welding reinforcement is removed from the inner wa ...

As a professional manufacturer that supplies steel pipes for a long time and strictly controls the quality, today we will briefly introduce the quality inspection methods of steel pipes. 1.Chemical composition analysis: Chemical analysis, instrumental anal ...

Ductile iron pipe is made of cast iron, carbon and silicon alloy. It is a product of blast furnace smelting of iron ore.According to the different forms of carbon in cast iron, it can be divided into steel-making cast iron, cast iron and ductile iron, etc. ...

Hydrostatic testing requires the element to be fully filled with test medium, such as water.Slowly apply pressure to the test medium until the required test pressure is achieved.This pressure is maintained for the required time, at which point the componen ...

Basic principle of ultrasonic testing: Ultrasonic flaw detection is a method that uses ultrasonic energy to penetrate the depth of metal materials, and from one section to another section, reflection occurs at the edge of the interface to inspect the defec ...

Detection of cracks or defects in metal materials or components. The commonly used flaw detection methods are: X-ray flaw detection, ultrasonic flaw detection, magnetic particle inspection, penetrant inspection, eddy current flaw detection and gamma ray fl ...

Nondestructive testing(NDT) is a testing method to check the surface and internal quality of the inspected parts on the premise of not damaging the working state of the workpiece or raw materials. Method The commonly used nondestructive testing methods are ...

Hebei Haihao offers one of the most extensive selections of black and galvanized malleable iron fittings in the industry. Available in 13 diameters from 1/8″ to 6″, every fitting is produced to exact specifications. All galvanized products are ...

What is Galvanized Pipe Nipple? For laymen, they would never have thought that galvanized nipple is a pipe fitting, but the fact is this word have been using for more than 400 years in plumbing and engineering. We can’t finger out the first usage of ...

A pipe nipple is a kind of fitting commonly used in industrial pipeline connection.There are common screw nipples, which are divided into double head outer thread, single head outer thread and flat head outer thread. In addition, there are also nipples con ...

In recent years, branch (Olet) is widely used in foreign countries, which is used for branch pipe connection, instead of the traditional branch pipe connection types such as reducing tee, reinforcing plate and strengthening pipe section. It has outstanding ...

In the production and processing of pipe fittings, hot galvanizing and cold galvanizing methods are often used to prevent pipe fittings from rusting, especially galvanized elbow and galvanized size head. Customers often according to their own needs and act ...

For a piping component,it will have a working pressure,proof test pressure and burst pressure.What is the difference between these pressure specifications for pipe fittings? The working pressure is the working conditions range of the pipe fittings or flang ...

Non-Destructive Testing(NDT) is used in inspecting,testing,or evaluating materials,components or assemblies for discontinuities,or differences in characteristics without destroying the pipes,fittings or flanges.That means the products can still be used whe ...

The Charpy impact test, also known as the Charpy V-notch test, is a high strain-rate test that involves striking a standard notched specimen with a controlled weight pendulum swung from a set height. The impact test helps measure the amount of energy absor ...

Destructive weld testing, as the name suggests, involves the physical destruction of the completed weld in order to evaluate its characteristics. This method of testing is used frequently for a number of applications. Some of these applications include wel ...

Destructive weld testing, as the name suggests, involves the physical destruction of the completed weld in order to evaluate its characteristics. This method of testing is used frequently for a number of applications. Some of these applications include wel ...

Heat treatment process is an important part of pipe manufacturing. Through the heat treatment steps of heating, heat preservation and cooling, the work hardening, residual stress and metal deformation defects produced in the forming process can be eliminat ...