When customers call and ask about products, they often say, “i want good fittings, not defective products.” Finished pipe fittings are difficult to distinguish from good or bad quality from the appearance, and they are only known during use. Th ...

ERW pipe is made by rolling low carbon structural steel or low alloy structural steel strip into tube blank according to certain helix angle, and then welding the tube seam. It can produce large diameter steel pipe with narrow steel strip. The specificatio ...

Hebei Haihao Group is one of biggest manufacturers specialized in the production of pipes, pipe fittings and flanges. In 2014 we exported 2,000pcs boiler tubes to Portugal. Boiler tubes material is ASTM A179, seamless. At that time we delivered the high qu ...

Liquid applied epoxy lining is one important lining type.It has excellent water and chemical resistance properties. They can be applied at various thicknesses and are factory applied to provide a dielectric lining. Bonded dielectric lining systems can be a ...

Cement mortar lining is one of the standard linings for steel water pipes.It has good performance to provide long-term protection for steel water pipe at a low cost.How does it protect the pipe? Cement Mortar Lining Protect Steel Water Pipe The actual ceme ...

Galvanized steel pipes are divided into two types, one is hot-dip galvanized steel pipe, and the other is cold-galvanized steel pipe. Cold-galvanized steel pipe is electro-galvanized steel pipe.The content of galvanized steel is very small, only 10 grams t ...

Nipple is a kind of common pipe fittings, which belongs to reducer products, and its main purpose is to install pipes at both ends. As the manufacturer of reducer, we will introduce to you wholeheartedly: When selecting reducer, the port size shall be indi ...

The essential difference between the elbow and the bend is mainly the difference between the “head” and the “pipe”. In addition, there are also great differences in the manufacturing process. Elbow is a kind of connection fittings c ...

As is known to all, stainless steel due to its special internal structure and surface of the oxidation film, so that it is more difficult to react with the medium in general chemical corrosion.However,once the oxide film is destroyed, oxygen atoms in the a ...

The heat treatment of stainless steel is to improve the processability, eliminate internal stress and prepare a good metallographic structure for the final heat treatment. Stainless steel heat treatment processes include annealing, normalizing, aging, and ...

Many problems often occur when forgings are heat treated and quenched, such as: oxidation and decarburization, overheating and overburning, deformation and cracking, and insufficient hardness. These problems will affect the size of the product, reduce the ...

The ideal solution should be a combination of excellent corrosion protection and simple construction procedures, and should be suitable for all sizes and shapes of flanges, and easy to operate bolts during maintenance. As a professional flange supplier of ...

The integrity of flange connections is critical to the fluid piping system. Whether it is the piping system transporting chemical media or the water supply pipeline, the leakage of flange connection will cause serious environmental and economic impacts,and ...

As we all know,there are many 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 mai ...

Novel coronavirus (2019-nCoV) disease affects all parts of the country from  all walks of life in China. For us steel foreign trader, traffic control, resume work delay , many direct and indirect effects will cause the order delivery delay, no quotation , ...

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 ...

Spiral steel tube and T-welded steel tube are basically the same raw materials used for steel pipe, but they are very different in the production process. Spiral steel pipe: the spiral seam steel pipe is made by automatic double silk and double submerged a ...

What’s the casing pipe? The shape of the casing section is round, in large diameter pipes and is inserted into the oil well, fixed with cement to protect other equipment that is mostly made of iron and steel. The oil well must be designed to withstan ...

Seamless pipes and welded pipes are widely used piping products.Seamless pipes means the pipes have no welding or seam,but welded pipes have welds on the surface.Now i’ll tell you the difference between them,let’s see: Seamless pipes don’ ...