Seamless steel tube for transmission of fluids

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Product Description:

Standard:
GB/T8163 Chinese national standard
Application:
General seamless steel tubes for conveying fluids
Models of major steel tubes:
10.20,Q345,etc.

Diamensional tolerances:

Types of steel tubes

Outer diameter

Wall thickness

Cold-rolled tubes
Tube sizes(mm)

Tolerances(mm)

Tube sizes (mm)

Tolerances(mm)

>30~50

±0.3

≤30

±10%

>50~219

±0.8%

Hot-rolled tubes

>219

±1.0%

>20

±10%

Mechanical properties:

Standard codes
Models of steel tubes

Tensite strength(MPa)

Yield strength(MPa)

Elongation(%)

GB/T8163

10

335~475

≥205

≥24

20

410~550

≥245

≥20

Q345

490~665

≥325

≥21

Chemical composition:

Standard codes
Models of steel tubes

Chemical compositions(%)

C

Si

Mn

P

S

Cr

Ni

Cu

GB/T8163

10

0.07~0.14

0.17~0.37

0.35~0.65

≤0.035

≤0.035

≤0.15

≤0.25

≤0.25

20

0.17~0.24

0.17~0.37

0.35~0.65

≤0.035

≤0.035

≤0.25

≤0.25

≤0.25

Q345

0.12~0.20

0.20~0.55

1.20~1.60

≤0.045

≤0.045

/

/

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Q:What's the difference between No. 20 steel pipe and 27SiMn Steel Pipe?
27SiMn =27 - steel pipe, which is a seamless steel tube material, the carbon content in 0.24 - 0.32%, SIMN single because it five elements (carbon manganese silicon Si, C, Mn, P P, S, guimeng sulfur) the high content of about 1.10 - 1.40%.
Q:What is the difference between seamless steel pipe and welded pipe?
Such as hydraulic equipment pipeline connection. The weld seam of common steel pipe is its weak link, and the quality of weld is the main factor that affects its overall performance. People who have lived in the north have experienced the experience of freezing pipes and pipes in winter, and the places where they burst are usually welds. Welded pipe is not seamless steel pipe.
Q:Where is the difference between seamless steel pipe and welded pipe
In appearance, seamless steel pipe and welded steel pipe difference in the welded pipe wall welded tendons, and seamless No.
Q:What is lined pipe?
Pipe lining is a new technology in recent ten years of development, also called composite pipe conveying fluid with different needs, the use of different materials to make the durability of the pipeline inner wall and outer wall of pipeline, to ensure the purity of the fluid, pipeline adaptability, performance is greatly improved, more extensive use.
Q:How to identify stainless steel pipe and steel pipe?
Steel pipe according to the production method can be divided into two categories: seamless steel pipe and pipe joints, pipe joints as welded steel pipe.1. seamless steel tube according to the production methods can be divided into: hot-rolled seamless pipe, cold drawn tube, precision steel tube, heat expansion tube, cold spinning tube and extrusion tube.Seamless steel tubes are made of high quality carbon or alloy steel. They are hot-rolled and cold-rolled (drawn).Bundled steel pipe2. welded steel pipe for different welding process and divided into the furnace pipe welding (ERW) pipe and automatic arc welding, because of the different forms of welding seam welded pipe and spiral welded pipe is divided into two kinds, end its shape is divided into circular welded and shaped (square, flat) pipe.
Q:Which is more load-bearing, the same thickness of steel pipe and steel bar?
The same length, the same pipe diameter, the same material strength is hollow, the ratio of area of steel (solid), and the cyclical and slender radius smaller than the larger, so the longitudinal stability coefficient is smaller, three factors, two factors are weak in steel reinforced, another factor: strength, they are the same, no doubt, steel reinforced bearing less than.
Q:Is it good to buy a simple wardrobe or a steel pipe?
Natural nobility, if the quality and the degree of firmness, is the simple steel cloth cabinet is the best. However, because the texture of wood wardrobe, solid wood wood may be used after deformation.
Q:What are the uses of welded steel pipes?
Low pressure fluid conveying galvanized steel tube (GB/T3091-1993) is also called galvanized pipe, commonly known as white tube. It is used for hot water, gas, air, oil, heating, steam, warm water and other generally low pressure fluid or other hot dip galvanizing (furnace welding or welding) steel pipe. The wall thickness of the steel pipe is divided into ordinary galvanized steel pipe and thick galvanized steel pipe. The end of the pipe is divided into non - threaded galvanized steel pipe and threaded galvanized steel pipe. The specification of steel pipe is expressed by nominal caliber (mm). The nominal diameter is the approximate value of the inner diameter. Usually used in inches, such as 11/2.
Q:What's the difference between a cracked carbon steel tube and a liquid carbon steel tube?
If the material is the same, the process is different from the test.
Q:What type of steel pipe for security windows?
General anti-theft window through the round tube is 3 cm square tube, 22.5 mm diameter round tube, also can use all square tube to do, if you want to median 304, the pipe is estimated more expensive, the market to do the price in 60 to 110 range. As for plastic steel, Anhui conch brand, the price of 180 this way. Aluminum alloy 110 to 230 specific look what material?!

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