1)Outer Diameter:

5mm-120mm

2Wall Thickness:

0.5mm-20mm

3)Length:

2m-8m

4)Standard:

EN 10297-1, EN 10305-1, EN 10277, DIN 2391-2, DIN 1629, ASTM A572, ASTM A53, ASTM A519, JIS G3445, JIS G3444,     JIS G3441, etc

5)Usage

machinery,damper, automobile fitting, metal products, refrigeration facilities, fasteners, machinery manufacture, ironware and so on,

6 Characters:

High precision, no oxide layer, fine finish outside and inside.and  

 the internal bore can be shaped in a circle, square, plum-blossom etc.

7) Technology:

cold drawn or cold rolled

The Main Product:Cold Drawn or Cold Rolled Refined Bright Steel Tubes;   Production  Range:OD:4.0-60mm  WT:0.5-8mm

Availability   Status

 

Brand

Performance  Indicator 

Executive

Standard

Tensile

Strength 

Yield Strength

Elongation

σb

σs

δs

Enterprise

Standard

QQTB-

2005

Mpa

Mpa

 %

StressReliefAnnealing 

BKS

(+Sr@)

St35(10#)

420

315

14

St45(20#) 

520

12

St52(16Mn)

580

420

10

Annealing

GBK

(+A)

St35(10#)

315

35

St45(20#)

390

32

St52(16Mn)

490

30

Normalizing  

NBK

(+N)

St35(10#)

340-470

235

32

St45(20#)

440-570

255

30

St52(16Mn)

490-630

355

28