Factory Cheap Cold Drawn Round Steel Tube - JIS G3444 – FIVE STEEL

Factory Cheap Cold Drawn Round Steel Tube -
 JIS G3444 – FIVE STEEL

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JIS G3444 Round  Steel Pipe Outside diameter(mm):21.7-1016.0 Wall Thickness(mm): 2.0-22 Length: 1m-12m or customized length Surface treatment: black, painting, galvanized, etc. Ends:plain or threaded both end with one end plastic cap one end coupling Packing: in bundle or wrapped with water-proof pvc cloth. Shipping.: bulk or load in containers. Payment: T / T, L / C, western union Applications: structure,water,gas and so on.   Table 1. Chemical Composition           Unit:% Symbol of ...


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Factory Cheap Cold Drawn Round Steel Tube - JIS G3444 – FIVE STEEL Detail:

JIS G3444 Round  Steel Pipe

Outside diameter(mm):21.7-1016.0

Wall Thickness(mm): 2.0-22

Length: 1m-12m or customized length

Surface treatment: black, painting, galvanized, etc.

Ends:plain or threaded both end with one end plastic cap one end coupling

Packing: in bundle or wrapped with water-proof pvc cloth.

Shipping.: bulk or load in containers.

Payment: T / T, L / C, western union

Applications: structure,water,gas and so on.

 

Table 1. Chemical Composition

         

Unit:%

Symbol of grade

C

Si

Mn

P

S

STK290

-

-

-

0.050 max.

0.050 max.

STK400

0.25 max.

-

-

0.040 max.

0.040 max.

STK490

0.18 max.

0.55 max.

1.65 max.

0.035 max.

0.035 max.

STK500

0.24 max.

0.35 max.

0.30 to 1.30

0.040 max.

0.040 max.

STK540

0.23 max.

0.55 max.

1.50 max.

0.040 max.

0.040 max.

Notes                                                                                                                                                                   a)  If necessary,alloying elements other than specified in this table may be added.                                                                                                b)  For the tube of grade STK540 exceeding 12.5 mm in wall thickness,the chemical composition may be subject to the aggreement between the purchaser and the manufacturer.                                                           

 

 

Table 2. Mechanical Properties

Symbol of grade

Tensile strength      N/mm²

Yield point of proof stress              N/mm²

Tensile strength in weld zone         N/mm²

Flattening

Bendability

Distance between plates(H)

Bend angle

Inside radius

Applied outside diameter

All outside diameters

All outside diameters

All outside diameters

All outside diameters

50 mm max.

STK290

290 min.

-

290 min.

2/3 D

90°

6 D

STK400

400 min.

235 min.

400 min.

2/3 D

90°

6 D

STK490

490 min.

315 min.

490 min.

7/8 D

90°

6 D

STK800

500 min.

355 min.

500 min.

7/8 D

90°

6 D

STK540

540 min.

390 min.

540 min.

7/8 D

90°

6 D

NOTE 1 D of this table is the outside diameter of the tubes.                                                                                                                              NOTE 2 1 Nmm²=1MPa

 


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Factory Cheap Cold Drawn Round Steel Tube -
 JIS G3444 – FIVE STEEL detail pictures


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