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ALLOY STEELS
Cold Drawn Seamless Tube
Cold Drawn Seamless Tube
Cold Drawn Seamless Tubes are ideal for a variety of applications requiring high strength. By providing high tolerances and strong physical properties, it is the most suitable tube type for use in heat exchangers, boilers, pressure piping applications, automotive components, stair lifts, restorations and more.
Specifications :
- High strength
- Dimension accuracy
- High precision
- Easy workability
- Cost-effective
Usage of Areas :
Cold drawn seamless tubes are frequently used for critical applications as well as hydraulic, mechanical and general engineering applications.
Technical Tube Tables
| STANDARDS | STANDARD DESCRIPTION |
|---|---|
| ANSI | American National Standards Institute |
| API | American Petroleum Institute |
| ASME | American Society of Mechanical Engineers |
| ASTM | AST International |
| BSI | British Standards Institution |
| DIN | Deutsches Institute for Normung |
| EN | European Standards |
| GOST | gosudarstvennyy standart |
| JIS | Japan Industrial Standards |
| NF | Norme Francise |
Definitions Used in Cold Tubes
| Old Term | New Term | Description |
|---|---|---|
| + BK | +C | Tubes without heat treatment (hard bright) after cold drawing |
| + NBK | +N | Tubes normalised under protective gas after cold drawing |
| + GBK | +A | Tubes annealed under gas after cold drawing |
| + BKM | +CR 1 | Tubes not normally heat treated, but suitable for final annealing |
| +CR 2 | Unheat-treated tubes after welding and gauge calibration | |
| + BKW | + LC | Tubes (soft) which, after heat treatment, have undergone a complementary cold drawing process at a very low strain rate. |
Main Terms Used in Welded and Seamless Tubes
| ABBREVIATION | EXPLANATION |
|---|---|
| SRM | Stretch Reducing Mill |
| ERW | Electrical Resistance Welded |
| SAW | Spiral Welded |
| PE | Plain End |
| PBE | Plain Both Ends |
| PLE | Plain Large End |
| PSE | Plain Small End |
| BW | Butt Weld |
| SW | Socket Weld |
| BBE | Beveled Both Ends |
| BLE | Beveled Large Ends |
| BSE | Beveled Small Ends |
| THD | Thereaded |
| TBE | Thereaded Both Ends |
| TLE | Thereaded Large End |
| TSE | Thereaded Small End |
SHC NORMS
| NOMINAL DIAMETER | OUTER DIAMETER (INC) | OUTER DIAMETER (mm) | SCH 20 | SCH 30 | SCH 40 | SCH 60 | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | XXS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 10.30 | 1.73 | 2.41 | |||||||||
| 1/4 | 13.70 | 2.24 | 3.02 | |||||||||
| DN 10 | 3/8 | 17.10 | 2.31 | 3.20 | ||||||||
| DN 15 | 1/2 | 21.30 | 2,77 | 3.73 | 4.78 | 7.47 | ||||||
| DN 20 | 3/4 | 26.70 | 2.87 | 3.91 | 5.56 | 7.82 | ||||||
| DN 25 | 1 | 33.40 | 3.38 | 4.55 | 6.35 | 9.09 | ||||||
| DN 32 | 1 1/4 | 42.20 | 3.56 | 4.85 | 6.35 | 9.70 | ||||||
| DN 40 | 1 1/2 | 48.30 | 3.68 | 5.08 | 7.14 | 10.16 | ||||||
| DN 50 | 2 | 60.30 | 3.91 | 5.54 | 8.74 | 11.07 | ||||||
| DN 65 | 2 1/2 | 73.00 | 5.16 | 7.01 | 9.52 | 14.02 | ||||||
| DN 80 | 3 | 88.90 | 5.49 | 7.62 | 11.13 | 15.24 | ||||||
| DN 90 | 3 1/2 | 101.60 | 5.74 | 8.08 | ||||||||
| DN 100 | 4 | 114.30 | 6.02 | 8.56 | 11.13 | 13.49 | 17.12 | |||||
| DN 125 | 5 | 141.30 | 6.55 | 9.52 | 12.70 | 15.88 | 19.05 | |||||
| DN 150 | 6 | 168.30 | 7.11 | 10.97 | 14.27 | 18.26 | 21.95 | |||||
| DN 200 | 8 | 219.10 | 6.35 | 7.04 | 8.18 | 10.31 | 12.70 | 15.09 | 18.26 | 20.62 | 23.01 | |
| DN 250 | 10 | 273.00 | 6.35 | 7.80 | 9.27 | 12.70 | 15.09 | 18.26 | 21.44 | 25.40 | 28.58 | |
| DN 300 | 12 | 323.90 | 6.35 | 8.38 | 10.31 | 14.27 | 17.47 | 21.44 | 25.40 | 28.58 | 33.34 | |
| DN 350 | 14 | 355.60 | 7.92 | 9.52 | 11.13 | 15.09 | 19.05 | 23.82 | 27.79 | 31.75 | 35.71 | |
| DN 400 | 16 | 406.40 | 7.92 | 9.52 | 12.70 | 16.64 | 21.44 | 26.19 | 30.96 | 36.52 | 40.49 | |
| DN 450 | 18 | 457.20 | 7.92 | 11.13 | 14.27 | 19.05 | 23.82 | 29.36 | 34.92 | 39.69 | 45.24 | |
| DN 500 | 20 | 508.00 | 9.52 | 12.70 | 15.09 | 20.62 | 26.19 | 32.54 | 38.10 | 44.45 | 50.01 | |
| DN 550 | 22 | 558.80 | 9.52 | 12.70 | 22.22 | 28.60 | 34.92 | 41.28 | 47.62 | 53.98 | ||
| DN 600 | 24 | 609.60 | 9.52 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.30 | 59.54 |
