JIS Standard Hot Rolled Steel U Channels for Constrction

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
200000 m.t./month

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Product Description:

Specifications of JIS Standard Hot Rolled Steel U Channels for Constrction:

1. We are definitely speciallizing in manufacturing and supplying channel steel as per japanese standard, which is characterised with high mechanical strength and competitive prices.

2. The sections in details are as followings in the table-1


JIS CHANNEL

Standard


h



Sectional


b



Dimension


s





t



Mass:


Kg/m




(mm)

(mm)

(mm)

(mm)


50x25

50

25

3.0

6.00

2.37

75X40

75

40

3.8

7.00

5.30

75X40

75

40

4.0

7.00

5.60

75X40

75

40

4.5

7.00

5.85

75X40

75

40

5.0

7.00

6.92







100X50

100

50

3.8

6.00

7.30

100X50

100

50

4.2

6.00

8.03

100X50

100

50

4.5

7.50

8.97

100X50

100

50

5.0

7.50

9.36







125X65

125

65

5.2

6.80

11.66

125X65

125

65

5.3

6.80

12.17

125X65

125

65

5.5

8.00

12.91

125X65

125

65

6.0

8.00

13.40







150x75

150

75

5.5

7.30

14.66

150x75

150

75

5.7

10.00

16.71

150x75

150

75

6.0

10.00

17.90

150x75

150

75

6.5

10.00

18.60

150x75

150

75

6.5

10.00

24.00







200X80

200

80

7.5

11.00

24.60

Table-1

3. The mechanical property of JIS Channel in the table-2:

Grade

Yield Strength,N/mm²

Extension Strength N/mm²

Thickness of Steel,mm

≦16

>16-≦40

>40-≦100

>100

SS330

≧205

≧195

≧175

≧165

330-430

SS400

≧245

≧235

≧215

≧205

400-510

SS490

≧285

≧275

≧255

≧245

490-610

SS540

≧400

≧390

-

-

≧540

                  Table-2


4. The chemical composition of JIS Channel in the table-3

Grade

Element(%)

C

Mn

P

S

SS330

--

--

≦0.050

≦0.050

SS400

SS490

SS540

≦0.30

≦1.60

≦0.040

≦0.040

                   Table-3



Usage of JIS Standard Hot Rolled Steel U Channels for Constrction:

1.The JIS channel can be devided into two kinds, namely common channel steel and light channel steel. The sizes of hot rolled common channel steel range from 5# to 40#. Meanwhile, the channel steel can be divided into cold forming sectional equal channel steel, cold forming sectional unequal channel steel, cold forming inner edge channel steel and outer edge channel steel.

2.The JIS channel  is usually used for arch-itechtural structure, and they could be welded in order to support or hang a vari-ety of facilities. They are also usually used in combination with I beam. The channel steel with sizes under 14# is usually applied to construction engineering, as purline, while the channel steel with sizes above 16# is more likely to be used in building vehicle chassis structure and mechanical structure. Furthermore, the channel steel in sizes above 30# are target at building bridge structure, as tension bar.

3.In a word, the channel steel must possess perfect welding property, riveting property and mechanical property and so on.



Package & Delivery of JIS Channel:

1.The JIS channel will be packed in bundle with steel wire at each end of every bundle and color marking in order to help the customer to recognize his goods more easily at sight.

2. And the JIS channel could be loaded into 20ft or 40ft container, or by bulk cargo.If the weight of each bundle reaches more than 3.5 mt, the loading by break bulk cargo should be choosed.When the weight of each bundle reaches less than 3mt, the loading by container should be choosed.

3.As for the transportaion from mill to loading port, the truck will be usually used. And the maximum quantity for each truck is 40mt.

4.All in all, we could do in accordance with customer's request.



Production Flow of JIS Standard Hot Rolled Steel U Channels for Constrction:

1.The steel billet shall be heated in the high temperature furnace.

2. The heated steel billet shall be rolled five to nine times with the aim of shaping the general figure of steel u channel.

3. The rolled steel channel should be put onto the cooling bed to make the temperature low.

4. The JIS Channel should be straighted on the straightener.

5. The straighted steel u channel will be cut into meters by saw, as per customer's requirements.

6. At the last part of production, the channel steel must be tested in order to confirm that the finished products are completely free from crack, pore, slag, scab or fold on the surface.


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Q:Span 6 meters, simple beam support center force 380Kg, need to choose how large channel steel, how to calculate?
Span 6 meters, simple beam support center force 380Kg, need to choose how large the calculation of channel:1, it is estimated that the weight of channel steel is approximately concentrated load;2, according to carrying capacity calculation and 3.8KN as load basic combination, get P value;3. Calculate the bending moment M = 1/4 (p * L);The flexural strength of 4 Q235, the design value of F - =215N/mm hot-rolled steel;5. Section modulus Wx of channel steel = M/f;6, check the channel section mechanical parameters, will know the specifications of channel steel.
Q:Channel 40 is used as a support leg. How many tons can each bear?
Bearing capacity determined by strengthThe maximum thickness of the member cross section is 18.00mm, according to GB50017-2003, 3.4.1-1, f = 205.00N/mm2According to GB/T 700-1988 and GB/T 1591-1994, FY =225.00N/mm2According to formula 5.1.1-1,N1 = 1 x F X An = 1 x 205 x 67.54 x 102103 = 1384.49kN
Q:What are the acceptance criteria for channel steel?
Channel steel is a kind of carbon structural steel used for construction and machinery. It is a complex section steel. Its cross section has a groove shape.
Q:Standard for channel 20
According to the GB / T 707 - 1998 hot-rolled steel GB, No. 20 channel is divided into: 20A; 20b two.20A: height: 200 mm width: 73 mm thickness: 7 mm weight: 22.637 kg / m theory.20b: height: 200 mm width: 75 mm thickness: 9 mm weight: 25.777 kg / m theory.(Note: the theoretical weight calculation of steel hot-rolled steel according to the density of 7.85 g / cm3)
Q:8# what's the size of the channel steel?
8# channel steel size 80*43*5mm
Q:What machine is used to bend the channel?
Is there a 3D molding requirement that will determine the number of NC shafts?.
Q:What does channel 20# mean?.
Channel 20# means: channel No. 20 is channel steel.
Q:What are the advantages of channel steel?
According to the channel shape and can be divided into 4 kinds: cold bending equilateral channels, cold-formed non equilateral channel steel, cold rolled edge channels, the cold bending edge channelsAccording to the theory of steel structure, it should be stressed by the channel plate, that is to say, the channel should stand rather than lie prone.The main use of channel steel is to fix the tray.
Q:Steel GB channel and non GB there is no difference?
From the price can be found at a glance, the cost is really reduced; finally, we recommend that you do not buy non - standard channel steel.
Q:What material is the channel steel bought in the steel market?
Carbon structural steels are normally used directly under heat supply without heat treatment.

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