EVERBRIGHT

Galvanized steel in terms of hardness test is a Brinell hardness, Rockwell hardness, Vickers hardness, Shore hardness, micro-hardness and high-temperature hardness, etc.,

which can be divided into a variety, most of the manufacturers or using a Buchner,Rockwell, Vickers hardness of these three methods.

Brinell hardness measurement principle is the test force F (N) with a certain size, the diameter D (mm) of hardened steel balls or carbide ball pressed into the surface of the metal under test, to maintain a predetermined time after the drop test force, the the indentation average diameter d (mm) measured with a reading microscope, and then the equation Brinell hardness HB value, or the value d from the prepared Brinell hardness table to detect HB Brinell hardness measurement method is suitable for cast iron, non-alloy, annealing and quenching and tempering steel, the determination should not be too hard, too small, too thin and the surface does not allow the larger indentation specimen or workpiece.

Rockwell hardness test when the sample is too small or Brinell hardness (HB) is greater than 450, to switch to a Rockwell hardness measurement. The test method is an apex angle of 120 degrees with a diamond cone or the diameter 1.59mm/3.18mm the ball, pressed into the surface of the material under a certain load, the hardness of the material by the indentation depth obtained.

The Vickers hardness means a standard of the hardness of the material. Vickers hardness there is a small negative Vickers hardness test load 1.961 <49.03N, it applies to a thinner workpiece, the tool surface or coating hardness measurement; micro-Vickers hardness test load <1.961N applicable to the metal foil, , of the ultra-thin surface layer hardness measurement.

Galvanized pipe process characteristics

• What is Galvanized Steel Pipe?

• Advantage of galvanized spiral pipe welding process

• Anticorrosion performance of galvanized mild steel pipe

• Cold galvanized(galvanizing)

• Difference between galvanized pipe and seamless pipe

• Difference between plastic coated pipe and galvanized steel pipe

• Difference between black steel pipe and galvanized steel pipe

• Difference between galvanized mild steel and galvanized iron

• Difference hot-dip galvanizing and cold galvanizing

• Defects of hot dip galvanized pipe

• Galvanized coating on pipe surface

• Galvanized steel pipe production line

• Galvanized pipe corrosion principle

• Galvanized steel hardness

• Galvanized steel pipe welding technology

• Galvanized pipe process characteristics

• Galvanized steel clamp connection technology applications

• Galvanized mild steel welded seam welding proces

• Disadvantages of Galvanized Steel pipe

• Hot-dip galvanized (galvanizing)

• How should paint galvanized steel pipe ?

• Hot galvanized plate surface defects

• The technical requirements of galvanized steel pipe

• Usage characteristics of thin-walled galvanized stainless steel tube

• Quality defects of galvanized layer

Delivery information:

• Material: SPHC,SPHD,SPHE,Q195-Q235,SAE1006

• Size: OD (6-610 mm) x WT (1-50mm)

• GTC (galvanized threaded and coupling) steel pipe: DN15-DN200 (NB1/2"-NB8")

• GPE (galvanized plain end) steel pipe: DN15-DN200

• Grooved steel pipe: DN15-DN200 (NB1/2"-NB8")

• Section type: round, square, rectangular, oval and other special section type.