Cold Drawn Hot Rolled Hexagonal Steel Tube
Guangzhou Kingmetal Steel Industry Co., Ltd.- Usage：Hydraulic,Automobile Pipe, Construction & Decoration, Special Purpose
- Surface Treatment：Oiled
- Technique：Cold Drawn
- Material：Carbon Steel
- Type：Seamless
- Section Shape：Special Section
Base Info
- Trademark：KINGMETAL
- Specification：30MM-400MM
- Transport Package：in Bundle
- Thickness：2-30mm
- Diameter：30mm-400mm
- Model NO.：KM-20191206
- Origin：China
- HS Code：7228600000
- Production Capacity：3000 Tons Per Month
Description
Standard
Cold drawn/hot rolled hexagonal steel tube /hexagonal bar/hex bar
Grade
ST35(E235), ST37, ST24(E255), ST52(E355), 10#, 20#, 35#, 45#,AISI 1010 1020 1045
O.D.
30MM-400MM
W.T.
2-30mm
Surface Treatment
Polished , cold drawn , cold rolled, honed, anneal, Srb , od polished
Packing
1. bundle packing
2. marking as per customer's requests
3. paint on the pipe as per customer request
4. pipe caps as customer request
Condition of Delivery
1. NBK(+N)
after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium
2. GBK(+A)
after cold forming, annealing in non oxidizing medium protective gas
3. BK(+C)
the final heat treatment after cold forming, threfore small steel pipe plasticly, the plasticly degree does not guarantee
Variety
Processing
Cylinder Diameter
Straightness
Size Accuracy
W.T/mm
Inner Bore Roughess
Cold drawn
ID30-250
0.3
H9-H11
±10%
0.4~1.6um
Honed tube
ID50-250
0.3
H7-H9
±10%
<0.4um
Mechanics performance
Material
Tensile strength
Yield strength
Elongation
Hardness
Ck20/20#/AISI1020
>520 N/ mm2
>375 N/mm2
>15%
>85HB
Ck45/45#/AISI1045
>600 N/ mm2
>520 N/ mm2
>15%
>85HB
ST52/16Mn/Q345D
>600 N/ mm2
>520 N/ mm2
>15%
>85HB
25Mn/STKM 13C-T
>600 N/ mm2
>530 N/ mm2
>15%
>85HB