As we know,cement mortar lining is one of the standard linings for steel water pipes.Some clients ask for the cement mortar lining as anti-corrosion coating.What is the advantages and disadvantages for cement mortar lining? END CAPS WITH CEMENT LINING Adva ...

Polyurethane is often used for piping coating or lining because polyurethane materials have following advantages: Fast curing – ensures economy of high production rates and efficiency. Excellent adhesion to ferrous and properly prepared steel surfaces. Hi ...

Submerged arc welding is a method of arc welding by burning under flux layer. Its full name is submerged arc automatic welding. It is one of the most commonly used welding methods in industrial production. Suitable for large batch, thicker and longer strai ...

3PE anti-corrosion steel pipe polyethylene three-layer structural protective layer, also known as three-layer PE, is an advanced anti-corrosion skill introduced from abroad in recent years. But do you know 3 layers of protection? Today we will take a close ...

Heat treatment refers to a kind of metal hot working process in which materials are heated, insulated and cooled in solid state to obtain the expected structure and properties. There are five main operations in the heat treatment of steel: annealing,normal ...

Stainless steel products are widely used in our life and industry.Do you know the characteristics of stainless steel? Please come with Haihao Group to learn some knowledge of stainless steel. Stainless Steel Weld Neck Flanges General characteristics of sta ...

In order to ensure that the steel pipe is intact and anticorrosive, the factory will coat the steel pipe surface.Recently, there are four kinds of industrial automatic coating processes for seamless steel pipes, such as oil casings, which are commonly used ...

Sometimes clients ask for the coal tar enamel coating or lining for the pipeline.We all know that coating or lining could protect the pipeline from corrosion and expand the service life.But how does it works? The coal tar pitch, which forms the basis for t ...

The heat treatment of stainless steel is to change its physical properties, mechanical properties, residual stress and restore the anti-corrosion ability that is seriously affected by pre-processing and heating, in order to obtain the best performance of s ...

In the rolling of seamless steel pipes, especially in the production process of precision seamless steel pipes, how does that pickling process proceed? As a professional supplier of steel pipes, flanges and fittings, we will unveil this mystery for you! 1. ...

When the stainless steel tube surface appears brown rust spot (spot), some people will feel more surprised, think “stainless steel is not rust, rust is not stainless steel, may be the steel problem”. In fact, this is the lack of understanding o ...

The pipeline anti-corrosion processing generally refers to external coating and internal coating.The external coating is mainly used for anti-corrosion protection for liquid pipes before burying,and internal coating is mainly used to reduce the investment ...

Sometimes client would ask for the material like L415N,do you know what the meaning is? Actually it indicate the delivery condition under API 5L. Take L415N for example,L means line pipe,415 means specified minimum yield strength in MPa and,N means normali ...

The integrity of the flange connection is critical to the fluid pipeline system. Whether it is a pipeline system that transports chemical media (such as hydrocarbons) or a water supply pipeline, flange connection leakage can cause serious environmental and ...

A flange does not cost too much, so how does it save you 200 thousand yuan? The main features of flange connection are convenient disassembly, high strength and good sealing performance. Flange plays a connecting role in the pipeline system. Once there is ...

Last page we know there are sever types of pipeline corrosion.Different types of coatings are designed to mitigate corrosion in different environments, including plant-manufactured systems and construction site tapes.Read this article you will know several ...

As is known to all, China is the world’s most important exporter of steel pipes, fittings, flanges and related products. Many countries have a large demand for steel pipes and accessories in infrastructure and economic construction. What impact will ...

In the last article we learned what is pipeline corrosion and its process,you must want to avoid it.As the saying goes, “know the enemy and know yourself, and you can fight a hundred battles with no danger of defeat”,the first thing you must do ...

Pipeline corrosion refers to the deterioration of pipeline materials and related systems due to the interaction with the working environment.It affects pipes and fittings made of metal and non-metal.Pipeline corrosion can related catastrophic failures that ...

Hebei Haihao Group completed the supply of S31803 seamless steel pipe in the upgrading project of Australian Navy wharf, which involves DN200 SCH80S SMLS PIPE A790 S31803 7.122 MTR and 7.222 MTR LENGTH POLISHED TO Ra 1. 6,total 1000 meters.All of them are ...