1. SCOPE
This Standard applies to medium-weight tubes suitable for screwing. They are suitable for nominal pressure 2 for liquids and nominal pressure 10 for air and non-hazardous gases.
2. Other relevant Standards
DIN 2444 Zinc coatings on steel tubes; quality standard for the hot galvanizing of steel tubes for installation purposes
DIN 2999 Part 1 Withworth pipe threads for tubes and fittings; cylindrical internal thread and conical external
DIN 17100 Steels for general structural purposes; quality specificationsDIN 50136 Testing of metallic materials; flattenin test on tubes.
3. Dimensions, designation
Designation of a medium-weight tube suitable for screwing, nominal width 40, seamlesly gavenized(B), in manufacturing lengths:
Table 1. Threaded tube DIN 2440 – DN 40-seamless B
| Nominall width |
Conn- ecting nomin- al width of the flttings according to DIN 2950 and DIN 2980 |
Whit- worth- pipe threads according to DIN 2999 Part1 |
Tube | Screw thread |
Corresponding socket according to DIN 2986 |
||||||||
|
Outside diameterd1 |
Wall thick- nesss |
Weight |
Theo- retical screw thread diameter d2 |
Threads per 25.4mm |
Usable screw thread length J min at a max. |
Distance of screw thread dlameter d2 from tube end |
Outside diameter |
Length | |||||
|
Plain-end tube kg/m |
socketed tubekg/m |
a max. |
a min. |
min. | min. | ||||||||
| 6 | 1/8 | R 1/8 | 10.2 | 2.65 | 0.493 | 0.496 | 9.728 | 28 | 7.4 | 4.9 | 3.1 | 14 | 17 |
| 8 | 1/4 | R 1/4 | 13.5 | 2.9 | 0.769 | 0.713 | 13.157 | 19 | 11.0 | 7.3 | 4.7 | 18.5 | 25 |
| 10 | 3/8 | R 3/8 | 17.2 | 2.9 | 1.02 | 1.03 | 16.662 | 19 | 11.4 | 7.7 | 5.1 | 21.3 | 26 |
| 15 | 1/2 | R 1/2 | 21.3 | 3.25 | 1.45 | 1.46 | 20.955 | 14 | 15.0 | 10.0 | 6.4 | 26.4 | 34 |
| 20 | 3/4 | R 3/5 | 26.9 | 3.25 | 1.90 | 1.91 | 26.441 | 14 | 16.3 | 11.3 | 7.7 | 31.8 | 36 |
| 25 | 1 | R 1 | 33.7 | 4.05 | 2.97 | 2.99 | 33.249 | 11 | 19.1 | 12.7 | 8.1 | 39.5 | 43 |
| 32 | 1 1/4 | R 1 1/4 | 42.4 | 4.05 | 3.84 | 3.87 | 41.910 | 11 | 21.4 | 15.0 | 10.4 | 48.3 | 48 |
| 40 | 1 1/2 | R 1 1/2 | 48.3 | 4.05 | 4.43 | 4.47 | 47.803 | 11 | 21.4 | 15.0 | 10.4 | 54.5 | 48 |
| 50 | 2 | R 2 | 60.3 | 4.5 | 6.17 | 6.24 | 59.614 | 11 | 25.7 | 18.2 | 13.6 | 66.3 | 56 |
| 65 | 2 1/2 | R 2 1/2 | 76.1 | 4.5 | 7.90 | 8.02 | 75.184 | 11 | 30.2 | 21.0 | 14.0 | 82 | 65 |
| 80 | 3 | R 3 | 88.9 | 4.85 | 10.1 | 10.3 | 87.884 | 11 | 33.3 | 241 | 17.1 | 95 | 71 |
| 100 | 4 | R 4 | 114.3 | 5.4 | 14.4 | 14.7 | 113.030 | 11 | 39.3 | 28.9 | 21.9 | 122 | 83 |
| 125 | 5 | R 5 | 139.7 | 5.4 | 17.8 | 18.3 | 138.430 | 11 | 43.6 | 32.1 | 25.1 | 147 | 92 |
| 150 | 6 | R 6 | 165.1 | 5.4 | 21.2 | 21.8 | 163.830 | 11 | 43.6 | 32.1 | 25.1 | 174 | 92 |
| 1) Referred to an average length of 6m | |||||||||||||
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Research use only,Commercial use is prohibited .