Hebei Haihao High Pressure Flange & Pipe Fitting Group Co.

  • Purchase steel pipe and maintenance of steel pipes

    Purchase steel pipe and maintenance of steel pipes

    How to purchase high quality steel pipe? First,you need to cheek the surface of the steel pipe.The color is selected to be uniform and uniform,the inner and outer walls are smooth and flat,and there are no bubbles,depressions or impurities, which affect th ...
  • How to choose steel pipe?

    How to choose steel pipe?

    Steel pipes are a very important building material, whether it is transporting fluids and powdered solids, exchanging heat, making mechanical parts and containers, manufacturing building structures, pillars and mechanical supports, or seeing home furniture ...
  • How to distinguish the authenticity of stainless steel pipe fittings?

    How to distinguish the authenticity of stainless steel pipe fittings?

    Because the stainless steel pipe fittings are the joints designed to work under various working conditions,it is very important to select the right stainless steel pipe fittings, so how to distinguish them?(Effect of heat treatment of stainless steel pipe ...
  • Solid solution characteristics of stainless steel pipe fittings

    Solid solution characteristics of stainless steel pipe fittings

    The solid solution process of stainless steel pipe fitting has a great influence on the corrosion resistance and appearance brightness of stainless steel, and plays a decisive role in the processing performance of stainless steel. Therefore, the heat treat ...
  • Effect of heat treatment on stainless steel pipe fittings

    Effect of heat treatment on stainless steel pipe fittings

    Stainless steel pipe fittings and flanges  production enterprises should take into account the production cost of pipe fittings, but also the factors of preventing corrosion and improving product quality. Therefore, it is necessary to adopt solid solution ...
  • What are the problems in the processing of stainless steel products?

    What are the problems in the processing of stainless steel products?

    Any finished product needs to be processed. What are the surface treatment processes for stainless steel products, and what problems will occur during processing?Please follow me to find out.(What measures should be taken to prevent corrosion of stainless ...
  • What measures should be taken to prevent corrosion of stainless steel?

    What measures should be taken to prevent corrosion of stainless steel?

    In previous articles, there were many introductions to stainless steel rust,and today i will summarize the measures that stainless steel should take to prevent rust. 1 Storage, lifting and transportation 1.1 Storage of stainless steel parts: There should b ...
  • Do you know how to process the surface of stainless steel forgings?

    Do you know how to process the surface of stainless steel forgings?

    Stainless steel has excellent characteristics such as unique strength,high abrasion resistance,superior anticorrosive performance,and resistance to rust.Therefore,it is widely used in chemical industry,food machinery,mechanical and electrical industry,envi ...
  • How to clean rusted carbon steel pipe?

    How to clean rusted carbon steel pipe?

    For the rusted carbon steel pipe, some people use cleaning, but when cleaning, it note that should a solvent, emulsion cleaning the steel surface, this method is only used as an anti-corrosion auxiliary means, for the real removal carbon steel pipe rust, t ...
  • Advantages and disadvantages of the electric resistance welding

    Advantages and disadvantages of the electric resistance welding

    The electric resistance welding (ERW) is a kind of welding method, which uses the resistance heat generated by the current passing through the welding piece and the contact place as a heat source to heat the piece locally, and at the same time to weld unde ...
  • Characteristics of Duplex and Super Duplex Stainless Steel

    Characteristics of Duplex and Super Duplex Stainless Steel

    Duplex and Super Duplex Stainless Steel material are often required for some severe project.What characteristics for them? Duplex stainless steel It is a popular material that is used in many industries. The designation of “duplex” comes with the biphasic ...
  • Coating types of steel water transmission pipe and  fittings under AWWA standard

    Coating types of steel water transmission pipe and fittings under AWWA standard

    For the steel water transmission pipes and fittings,the coatings are necessary to use in order to prolong the service life of products.The often used standard is AWWA standard.There are several coating types for steel pipes and fittings under this standard ...
  • Requirements of ship pipeline

    Requirements of ship pipeline

    Ship pipeline is the pipeline used to connect various mechanical equipment on the ship,which is used to transmit water, oil, gas and other related working fluids.There are the requirements of ship pipeline: The material selection of ship pipeline must be i ...
  • Introduction of ship pipeline

    Introduction of ship pipeline

    Ship pipeline is the pipeline used to connect various mechanical equipment on the ship,which is used to transmit water, oil, gas and other related working fluids.There are two kinds of ship pipeline: power pipeline and ship system pipeline. PTFE Lined Pipe ...
  • What is the nominal pressure, working pressure and design pressure of steel pipe?

    What is the nominal pressure, working pressure and design pressure of steel pipe?

    The nominal pressure,working pressure and design pressure of steel pipe are different,read this article you will know the different between them. What is nominal pressure PN (MPa)? A reference value relating to the pressure-bearing capacity of a ductwork c ...
  • Introduction of fusion bonded epoxies piping coating or lining

    Introduction of fusion bonded epoxies piping coating or lining

    Pipe coating or lining can protect the piping goods from corrosion effectively.Fusion Bonded Epoxies(FBE) is one important way for pipe coating or Lining. Fusion bonded epoxies are a one part, heat curable, thermosetting epoxy. FBEs are applied to heated p ...
  • Advantage and disadvantage for cement mortar lining

    Advantage and disadvantage for cement mortar lining

    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 ...
  • Introduction of Polyurethane Piping Coating or Lining

    Introduction of Polyurethane Piping Coating or Lining

    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 ...
  • What is the submerged arc welding and its advantages?

    What is the submerged arc welding and its advantages?

    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 ...
  • What is 3PE three-layer protective layer?

    What is 3PE three-layer protective layer?

    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 ...