shouldered grooved pipe for tunnel

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Product Description:

Product Name

Shouldered Grooved pipe

Outside Diameter(mm)

60.3mm-425mm

Wall thickness(mm)

2mm-20mm

Certification

FM/UL; SGS/BV

Standard

1.ASTM A106/A53 GR.A; ASTM A106/A53 GR.B; ASTM A53/A106 GR.C

2.APL 5L GR.B, API 5CT J55, K55, N80

3.ASTM, BS,DIN, EN

Grade

A, B, C, ST33, ST37, ST35.8, ST45-8, ST45-4, ST52

Place of Origin

Hebei Cina

Face finished

1.Manual polished

2.mechanical polished

3.black paint on the face

4.Shoulder Grooved on both ends

5.Galvanized or Colour Painting

Export

Europe, South America, the Middle East, Africa, Asia and other countries and regions, well received by consumers!

Process Method

1.Cold Drawn

2.Cold rolled

3.Hot rolled

4. Hot expanded

Application

Tube with hollow cross-section, a large number of channels for transporting fluids, such as the transportation of oil, natural gas, gas, water and some solid materials, pipes, etc..

Package

1.Inner Packing:Caps at both ends, steel strong trips on every bundle

2.Outer Packing:Standard export package or as per clients' requirements


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Q:Hot galvanized steel pipe for use?
Hot galvanized pipe: in order to improve the corrosion resistance of steel pipe, galvanized steel pipe. Galvanized steel pipe hot galvanized and galvanized two kinds, hot galvanized, zinc coating thickness, zinc plating cost is low, the surface is not very smooth.The hot-dip galvanized pipe is an alloy layer that causes molten metal to react with the iron matrix, thus combining the substrate with the two coating. Hot dip galvanizing is the first steel pickling, in order to remove iron, steel pipe surface after pickling, cleaning by ammonium chloride or zinc chloride solution or ammonium chloride and zinc chloride aqueous solution tank, and then into the hot dip tank. Hot galvanizing has the advantages of uniform coating, strong adhesion, long service life and so on. A complex physical and chemical reaction is formed between the steel tube matrix and the molten plating solution to form a corrosion resistant structure with a tight zinc - iron alloy layer. The alloy layer is integrated with the pure zinc layer and the steel pipe matrix. Therefore, it has strong corrosion resistance.
Q:What is the difference between seamless steel pipe and welded pipe?
The thicker the diameter, the more commonly the spiral weld. The seamless steel pipe is generally molten state molten steel through the annular slot backlog, and then stretched and other treatment process, so that there is no weld. On the performance, especially the pressure capacity of the steel pipe than ordinary steel has greatly improved, so often used for high voltage equipment.
Q:What are the lengths of scaffold steel tubes?
Scaffolding steel pipe standard length is 6 meters, for easy use, respectively, 6 meters, 3 meters, 2 meters, 1.5 meters, 1 meters, etc., if there is a special length, you need to intercept.
Q:Is there any difference between thermal expansion seamless steel pipe and seamless steel pipe?
One is thermal expansion on a bar, that is, piercing between the bars and expanding the tube with a little bit of mandrel. The other is to expand the formed tube before it is heated so that the defects in the pipe will be enlarged. Comparatively speaking, the quality of the first kind is better than the second, and you should belong to the second kind. Compared with the original seamless seamless tube, the quality and chemical properties are certainly different. The price will be cheaper, too.
Q:What's the difference between hot dip galvanizing and cold galvanizing? Which kind of galvanizing method is good?
Cold galvanizing refers to the zinc plating, the coating is thinner, corrosion resistance is slightly worse, variable color. Environmental pollution.Hot dip galvanized by molten zinc ingots, the coating thickness can be adjusted, good corrosion resistance, and subsequent passivation, can be used for outdoor rust, long service life, some up to 20 years.
Q:What does the diameter of a steel pipe project mean?
Nominal surface meaning can be understood as a public address. It's as if everyone agreed to call something as a "devil", and he was the devil.Don't be confused by the numbers behind the nominal diameter. For example, DN50, this 50 is really close to the outer diameter or inside diameter of the steel tube, but DN50 is only a general model of the caliber of the national standard.
Q:Difference between cold rolled steel pipe and common steel pipe
From the above point of view, the hot rolled steel pipe used in fluid transport, mechanical structure and other requirements of the size of the situation is not high, cold-rolled steel pipe used in precision instruments, hydraulic systems, pneumatic and other places demanding.
Q:Can galvanized steel tubes simmer?
Galvanized pipe bending is one of the elbow, the surface of the pipe is coated with a layer of zinc material to improve the corrosion resistance of the elbow. Galvanized pipe bending hot galvanized and galvanized two kinds, hot galvanized, zinc coating thickness, zinc plating cost is low, the surface is not very smooth. Galvanized pipe bending cold tube, hot tube, the former has been banned, and the latter is also advocated by the state for the time being.
Q:How to make the magnetic steel, can be like a magnet?
Magnetization. Winding the insulated wire on the object, passing in the direct current, and taking it down after a period of time.
Q:Can stainless steel pipes spray black paint?
Can. The surface roughening with a thick gauze, do not use ordinary paint intensity difference. With resin paint, paint can be

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