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.
Modèle: GB/T 20409
marque: TORICH
Détails d'emballage: Protection antirouille à l'huile, en matériau d'emballage, en faisceaux hexagonaux ou dans une boîte en bois
productivité: 40000 ton per year
transport: Ocean,Land,Air
Lieu d'origine: Zhejiang, Chine
Soutenir: 50000 ton per year
Certificats : ISO 9001:2008 ISO 14001:2008 TS 16949
Code SH: 7304191000
Hafen: Shanghai,Ningbo,Foshan
Type de paiement: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,FCA,CPT
Tubes et tuyaux sans soudure en acier à plusieurs facettes GB / T 20409 pour chaudière à haute pression
Spec :
Matériel: 20G, 20MnG, 25MnG, 12CrMoG, 15CrMoG
Gamme de taille : OD: 4-1200mm
WT: 0.3-200mm
Longueur générale: 8-12 m
Tolérance:
Selon les tableaux suivants ou la demande des clients.
Propriétés mécaniques longitudinales des tubes à vis internes à température ambiante
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 |
Le grade et la composition chimique de l'acier
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%. |
Caractéristiques:
ASSURANCE QUALITÉ TORICH
Bonne qualité de surface
Bonne tolérance OD et ID contrôlée selon la norme technique
Qualité stable
Test à 100% par courants de Foucault
Traitement: étirage à froid
Conditions techniques de livraison: Traitement thermique
Largement utilisé dans le domaine de : chaudière à haute pression
Groupes de Produits : Tubes en acier sans soudure
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.