JIS Standard Hot Rolled Steel U Channels for Constrction

Loading Port:Tianjin

Payment Terms:TT OR LC

Min Order Qty:25 m.t.

Supply Capability:200000 m.t./month

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.