API 5Lfistula ferrea
Gradus chalybis: L360 vel X52 (PSL1)
Requisita compositionis chemicae:
C: ≤0.28 (sine sutura) ≤0.26 (soldatum)
Mn: ≤1.40
P: ≤0.030
S: ≤0.030
Cu: 0.50 vel minus
Ni: ≤0.50
Cr: ≤0.50
Mo: ≤0.15
*V+Nb+Ti: ≤0.15
* Quantitas mangani augeri potest 0.05% pro qualibet 0.01% reductione in quantitate carbonis, usque ad maximum 1.65%.
Requisita proprietatum mechanicarum:
Robur cessionis: ≥360Mpa
Robur tensile: ≥460Mpa
Robur tensile conglutinationis tubi chalybis conglutinati: ≥460Mpa
Elongatio: ≥1940* AXC0.2/4600.9, ubi AXC est area sectionis transversalis exemplaris tensili.
Tolerantia diametri exterioris tubi ferrei:
| Diameter externus D mm | Deviatio diametri exterioris extremitatis mm | |
| Tubus ferreus sine suturis | Tubus ferreus conglutinatus | |
| < 60.3 | -0.8, +0.4 | |
| 60.3 D vel minus 168.3 vel minus | -0.4, +1.6 | |
| 168.3 < D≤610 | ±0.005D, sed maximum ±1.6 | |
| 610 < D ≤ 1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Ex pacto | |
Murus crassitudo tolerantia of chalybs fistula
| Crassitudo parietis t mm | Tolerantia mm |
| Tubus ferreus sine suturis | |
| 4.0 vel minus | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| XXV vel plus | +3.7 vel +0.1t, quod maius est -3.0 vel -0.1t, maius sume. |
| Tubus conglutinatus | |
| 5.0 vel minus | + / - 0.5 | |
| 5.0 | < t < 15 | Plus minusve 0.1 t |
| 15 | vel plus | + / - 1.5 |
Chalybs gradus: L360N or X52N(PSL2)
Chemica compositio requisita:
C: ≤0.24
Si: ≤0.45
Mn: ≤1.40
P: ≤0.025
S: ≤0.015
V: ≤0.10
Numerus:≤0.05
Ti: ≤0.04
Cu: ≤0.50
Ni: ≤0.30
Cr: ≤0.30
Mo: ≤0.15
V+Nb+Ti: ≤0.15
* Contentum manganesi augeri potest 0.05% pro qualibet 0.01% reductione in contento carbonis, usque ad maximum 1.65%.
* Nulla additio bori voluntaria permittitur, B residuum ≤ 0.001%
Carbonium aequivalens:
CEP cm: ≤0.25
CEIIW: ≤0.43
* CE utere cum contentum carbonis maius quam 0.12% est, et CE IIW utere cum contentum carbonis minus quam vel aequale 0.12% est, in P cm.
CEP cm = C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B
Si eventus analysis liquefactionis B minus quam 0.0005% est, non opus est analysin elementi B in analysi producti includere, et contentum B in calculo aequivalentis carbonis CEP cm-1 tamquam nihilum considerari potest.
CEIIW =C+Mn/6 (C+Mo+V)/5+(Ni+Cu)/15
Mechanica proprietates requisita:
Robur cessionis: 360-530Mpa
Robur tensile: 460-760Mpa
Ratio cessionis: ≤0.93 (solum ad tubos ferreos D > 323.9mm pertinet)
Robur tensile conglutinationis tubi chalybis conglutinati: ≥460Mpa
Elongatio minima: = 1940 * AXC0.2/4600.9, ubi AXC est area sectionis transversalis exemplaris tensi.
Examen impactus tubi CVN
Temperatura probationis 0 °C
| Diametrum externum D mm specifica. | CVN plenae magnitudinisEnergia absorptaKVJ |
| 508 vel minus | 27 |
| > 508 ad 762 | 27 |
| > 762 ad 914 | 40 |
| > 914 ad 1219 | 40 |
| > 1219 ad 1422 | 40 |
| > 1422 ad 2134 | 40 |
Exterior diameter tolerantia of chalybs fistula
| Diameter externus D mm | Deviatio diametri exterioris extremitatis | |
| Tubus ferreus sine suturis | Tubus ferreus conglutinatus | |
| < 60.3 | -0.4, +0.8 | |
| 60.3 D vel minus 168.3 vel minus | -0.4, +1.6 | |
| 168.3 < D=610 | ±0.005D, sed maximum ±1.6 | |
| 610 < D=1422 | + / - 2.0 | + / - 1.6 |
| > 1422 | Ex pacto | |
Murus crassitudo tolerantia of chalybs fistula
| Crassitudo parietis t mm | Tolerantiae |
| Tubus ferreus sine suturis | |
| 4.0 vel minus | +0.6, -0.5 |
| 4 < t < 25 | +0.150t, -0.125t |
| XXV vel plus | +3.7 vel +0.1t, quod maius est -3.0 vel -0.1t, maiora sume. |
| Tubus conglutinatus | |
| 5.0 vel minus | + / - 0.5 |
| 5.0 < t < 15 | Plus minusve 0.1 t |
| Quindecim vel plures | + / - 1.5 |
Tempus publicationis: XXVI Septembris, MMXXIII
