Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Model: GB/T 20409
merk: TORICH
verpakkingen: Anti-roest oliebescherming, in zeewaardig verpakkingsmateriaal, in zeshoekige bundels of in houten kist
produktiviteit: 40000 ton per year
vervoer: Ocean,Land,Air
Plaats van herkomst: Zhejiang, China
Ondersteuning over: 50000 ton per year
Certificaat: ISO 9001:2008 ISO 14001:2008 TS 16949
GS-code: 7304191000
Haven: Shanghai,Ningbo,Foshan
betaling Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,FCA,CPT
GB / T 20409 Multi-getrokken naadloze stalen buizen voor hogedrukketel
Spec :
Materiaal: 20G, 20MnG, 25MnG, 12CrMoG, 15CrMoG
Grootte Bereik : OD: 4-1200mm
WT: 0,3-200 mm
Algemeen Lengte: 8-12 m
Tolerantie:
Volgens de volgende tabellen of het verzoek van de klant.
Longitudinale mechanische eigenschappen van interne schroefbuizen bij kamertemperatuur
Number | Grade |
tensile strength / MPa(N/) |
Lower yield strength /MPa((N/) |
Elongation A/% |
Impact energy /J |
Not less than | |||||
1 | 20G | 410~550 | 245 | 24 | 35 |
2 | 20MnG | ≥415 | 240 | 22 | 35 |
3 | 25MnG | ≥485 | 275 | 20 | 35 |
4 | 12CrMoG | 410~560 | 205 | 21 | 35 |
5 | 15CrMoG | 440~640 | 235 | 21 | 35 |
De kwaliteit en chemische samenstelling van staal
Number | Brand | chemical composition(mass fraction)/ % | ||||||
C | Mn | Si | Cr | Mo | S | P | ||
1 | 20G | 0.17~0.23 | 0.35~0.65 | 0.17~0.37 | -- | -- | ≤0.020 | ≤0.025 |
2 | 20MnG | 0.17~0.23 | 0.70~1.00 | 0.17~0.37 | -- | -- | ≤0.020 | ≤0.025 |
3 | 25MnG | 0.22~0.29 | 0.7~1.00 | 0.17~0.37 | -- | -- | ≤0.020 | ≤0.025 |
4 | 12CrMoG | 0.08~0.15 | 0.40~0.70 | 0.17~0.37 | 0.40~0.70 | 0.40~0.55 | ≤0.020 | ≤0.025 |
5 | 15CrMoG | 0.12~0.18 | 0.40~0.70 | 0.17~0.37 | 0.80~1.10 | 0.40~0.55 | ≤0.020 | ≤0.025 |
Note1:Residual element content of 20G,20MnG,25MnG should satisfy: Cu≤0.20%,Cr≤0.25%,Ni≤0.25%,V≤0.08%,Mo≤0.15%;The remaining elements of other brands should satisfy: Cu≤0.20%,Ni≤0.30%. Note2:The acid soluble aluminum in 20G steel should not be more than 0.010%. Note3:The nitrogen content of the steel produced by the oxygen converter plus the refining of the furnace should not be more than 0.008%. |
Kenmerk:
KWALITEITSBORGING VAN TORICH
Goede oppervlaktekwaliteit
Goede OD- en ID-tolerantie geregeld volgens de technische norm
Stabiele kwaliteit
100% wervelstroomtest
Verwerking: Koudtrekken
Technische leveringsvoorwaarden: warmtebehandeling
Op grote schaal gebruikt in het gebied van : Hogedrukketel
Product Categorie : Naadloze stalen buizen
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.