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Cold Drawn Seamless Tube

1. OD size: 6mm-114mm(1/2"-4"),etc. WT: 1.0mm-30mm(SCH10-XXS),etc. Length: 1m,3m,5.8m,6m,11.8m,12m,etc
2. Standard: ASTM A106, API 5L, DIN1626, DIN1629, DIN17175, DIN2448, JIS G3452
3. Ends: Beveled ends or plain ends with protection cap
4. Usage: Low and middle-pressure fluid pipeline, Boiler, oil & gas industry······
Availability:


What is cold drawn seamless tube

Cold Drawn Seamless Steel Pipe as implied is made by cold drawing a larger mother seamless pipe, which is generally manufactured through an HFS process. In the Cold Drawn Seamless process, the mother pipe is pulled through a die & plugin cold without any heating. Because of the tool on the outside and inside the surface and tolerances are better in Cold Drawn Seamless. While this is an additional process over HFS, it is necessary to get smaller size pipes that otherwise cannot be manufactured in HFS. Some applications which require close tolerances and smooth surfaces also specify the requirements to be necessarily Cold Drawn Seamless. Cold Drawn Seamless pipes & tubes are extensively used in Heat-Exchanger, Bearing & Automotive sectors.


Cold drawn seamless steel pipe is used for the mechanical structure, hydraulic equipment, which has precision size, good surface finish. It can greatly reduce mechanical processing hours and improve material utilization, and improve the quality of products. High-quality cold-drawn seamless steel pipes are mainly using the 10# 20#. In addition, to ensure chemical composition and mechanical properties, it will check by the Hydrostatic test, crimping, flared, and Squashed test.


Cold Drawn Seamless (CDS) as implied is made by cold drawing a larger mother seamless pipe, which is generally manufactured through an HFS process. In the CDS process, the mother pipe is pulled through a die & plugin cold without any heating. Because of the tool on the outside and inside the surface and tolerances are better in CDS. While this is an additional process over HFS, it is necessary to get smaller size pipes that otherwise cannot be manufactured in HFS. Some applications which require close tolerances and smooth surfaces also specify the requirements to be necessarily CDS. CDS pipes & tubes are extensively used in Heat-Exchanger, Bearing & Automotive sectors.



Size of cold drawn seamless tube

ID Size : 20mm – 1500mm

Length: max 16m



Manufacturing process of cold drawn seamless tube

CDS seamless tube and pipe are produced by piercing hot billets and subsequent rolling which reduces their diameter and elongates them. This material is then passed through a die and over a mandrel plug to produce an accurate size and gauge which is the essence of the cold drawing process.



Standard of cold drawn seamless tube

Cold Drawn Seamless Tube – Mechanical – BS 6323 Part 4 : 1982 CFS 3

BS 6323 Part 4 : 1982 Bright-as-Drawn – CFS 3 BK Annealed – CFS 3 GBK


Wall

0.71

0.81

0.91

1.22

1.42

1.63

2.03

2.34

2.64

2.95

3.25

4.06

4.76

4.88

6.35

7.94

9.53

12.7

O.D.




















4.76




















6.35




X

X


X













7.94




X

X


X

X












9.53




X

X

X

X

X


X


X








11.11




X

X

X

X

X












12.7




X

X

X

X

X


X


X








14.29


X


X

X


X

X


X

X

X








15.88




X

X


X

X


X

X

X

X


X





17.46




X



X

X




X








19.05





X


X

X


X

X

X

X


X

X




20.64







X

X




X








22.22





X

X

X

X


X

X

X

X


X

X




25.4





X

X

X

X

X

X

X

X

X


X

X




26.99







X

X




X

X


X





28.58





X

X

X

X


X


X

X


X

X




30.16







X

X


X










31.75





X


X

X


X


X

X


X

X

X



33.34







X





X








34.93





X


X

X


X


X

X


X

X

X

X


38.1







X

X


X


X

X


X

X

X

X


39.69












X



X





41.28







X

X


X


X

X


X

X

X

X


42.86










X


X








44.45







X

X


X


X

X


X

X

X

X


47.63










X


X

X


X

X

X



50.8





X


X

X


X


X

X


X

X

X

X


53.98












X



X

X

X

X


57.15








X


X


X

X


X

X


X


60.33







X





X

X


X

X

X

X


63.5








X


X


X

X


X

X

X

X


66.68












X



X

X




69.85










X


X

X


X

X


X

X

73.02







X













76.2







X

X


X


X



X

X

X

X

X

79.38







X













82.55







X



X


X




X


X


88.9












X




X

X

X


95.25












X




X




101.6












X



X





107.95












X




X




114.3












X




X




127












X







X


Cold Drawn Seamless Tube – Mechanical


Cold Drawn Seamless tube for Hydraulic & Pneumatic Lines – BS 3602 Part 1 CFS Cat 2 Alternatively Din 2391 ST 35.4 NBK

BS 3602 Part 1 CFS Cat 2 Alternatively Din 2391 ST 35.4 NBK


Wall

0.91

1

1.22

1.42

1.5

1.63

2

2.03

2.5

2.64

2.95

3

3.25

3.66

4

4.06

4.88

5

6

O.D.





















6



X



X


X













6.35


X


X



X














7.94


X


X



X














8



X



X


X













9.52


X


X

X


X


X












10



X



X


X













12



X



X


X


X



X








12.7


X


X



X


X


X










13.5














X







14



X



X


X


X











15



X



X


X


X



X








15.88


X


X



X


X


X



X







16



X



X


X





X








17.46












X









18



X



X


X













19.05




X



X


X


X



X







20






X


X


X



X



X





21.43











X



X







22






X


X


X



X








22.22




X



X


X


X



X







25






X


X


X



X



X





25.4




X



X


X


X



X







26.99















X






28






x


x


x






X





30








X


X



X



X



X


31.75







X


X


X



X



X




34.13

















X




34.93









X












35






X


X





X



X





38








X





X



X



X

X

38.1







X




X



X







42








X





X








44.45







X







X







48.42


















X



50













X








50.8







X


X



X



X



X




Cold Drawn Seamless tube for Hydraulic & Pneumatic Lines



Application of cold drawn seamless tube

  • Oil & Gas Sector

  • Automotive Industry

  • Hydrocarbon Process Industry

  • Bearing Industry

  • Hydraulic Cylinder

  • Boiler, Heat Exchanger, super heater& Condenser

  • Mechanical, Structural General Engineering


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