Hebei Haihao High Pressure Flange & Pipe Fitting Group Co.

  • Carbon Steel Plate -Things You Should Know

    Carbon Steel Plate -Things You Should Know

    Carbon steel plate usually been considered as the steel that does not contain much alloy steel elements. Generally elements are C, Mn, P, S, Si, besides these there are no minimum limits for elements of Al, Cr, Ni, Mo, V etc. Carbon steel plates are availa ...
  • Five nondestructive testing of UT RT MT PT ET

    Five nondestructive testing of UT RT MT PT ET

    Nondestructive testing is widely used in the field of industry. The technology does not destroy parts or materials, can be detected on site directly with high efficiency. At present, the most common non-destructive testing there are five kinds: UT (Ultras ...
  • The difference between sand blasting and shot blasting

    The difference between sand blasting and shot blasting

    Sand blasting and shot blasting are both mechanical surface cleaning processes and are often confused.Let’s see what’s the difference between and blasting and shot blasting?The main difference between them is that they have different working pr ...
  • The introduction of sand blasting

    The introduction of sand blasting

    The sand blasting is also a surface treatment of steel products, which is a process of cleaning and roughening the surface of the matrix by the impact of high-speed sand flow. It uses compressed air as the power to form a high-speed jet jet to spray the ma ...
  • The introduction of shot blasting

    The introduction of shot blasting

    Shot blasting is a surface treatment technology of steel. It uses the centrifugal force of the impeller on the head of the shot blasting machine to shoot the abrasive to the surface of the treated steel at a high linear speed to produce a striking and grin ...
  • Difference between ASTM A53 pipe and ASTM A106 pipe

    Difference between ASTM A53 pipe and ASTM A106 pipe

    ASMT A53 Pipe and ASTM A106 Pipe are the most commonly used carbon steel pipe types in industry today, and they’re very similar.But the most important thing is to distinguish the differences between them. 1.Scope ASTM A53 is Standard Specification fo ...
  • What's spiral welded steel pipe?

    What’s spiral welded steel pipe?

    Spiral welded steel pipe is made with the steel strip or steel plate bending deformation shapes like round, square etc. before welding, jointed on the surface of the steel pipe. There are different welding ways: electric arc welding, high frequency or low ...
  • 2205 duplex stainless steel gas pipeline: a lasting solution for West to East Gas Transmission

    2205 duplex stainless steel gas pipeline: a lasting solution for West to East Gas Transmission

    Deep in Xinjiang’s Tarim Basin, natural gas is mined, refined and transported across the country through gas pipelines.However, due to the corrosion of the pipeline, gas leakage occurs frequently.A new natural gas pipeline made of 2205 dual phase sta ...
  • What's 317 stainless steel material?

    What’s 317 stainless steel material?

    Stainless steel is called high-alloy steel.They contain about 4-30% chromium.According to its crystal structure, it can be divided into martensite steel, austenite steel and ferrite steel. Class 317 stainless steel is an improved version of 316 stainless s ...
  • How to choose plastic lined steel pipe?

    How to choose plastic lined steel pipe?

    With the popularization of people’s awareness of environmental protection and health, new types of pipes for environmental protection water supply are springing up one after another, and the varieties are hard to enumerate. Plastic lined steel pipe i ...
  • The differences between forged steel flange and cast iron flange

    The differences between forged steel flange and cast iron flange

    There are mainly two methods to manufacture the flanges: forging and casting.(The difference between forging and casting) Cast flange is a lower cost flange and suitable for medium or low pressure pipelines. It has below features: High production efficien ...
  • Waterproof epoxy – Is epoxy waterproof?

    Waterproof epoxy – Is epoxy waterproof?

    Is Epoxy Waterproof? Apart from Epoxy having a great filling and adhesive qualities, its best quality is its ability to seal and provide a waterproof and non-corrosive protective layer. Epoxy Resin is a very versatile material and is used in countless appl ...
  • Points to note when cutting stainless steel sheet

    Points to note when cutting stainless steel sheet

    The use of CNC plasma cutting machine and laser CNC cutting machine equipment to realize the processing of stainless steel sheet is the current mainstream processing method. As a low-priced material, the requirements for welding performance are different f ...
  • Manufacturing method of seamless stainless steel pipe

    Manufacturing method of seamless stainless steel pipe

    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 ...
  • Design and manufacture of screw taps for stainless steel pipe fitting

    Design and manufacture of screw taps for stainless steel pipe fitting

    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 ...
  • Introduction of plastic lined steel pipe

    Introduction of plastic lined steel pipe

    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 ...
  • Overview of steel pipe quality inspection methods

    Overview of steel pipe quality inspection methods

    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 ...
  • What is a ductile iron pipe?

    What is a ductile iron pipe?

    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 of the plain end

    Hydrostatic testing of the plain end

    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, advantages and disadvantages of ultrasonic testing

    Basic principle, advantages and disadvantages of ultrasonic testing

    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 ...