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.
Modelo: GB/T 20409
Marca: ENRIQUECER
Paquete: Protección contra el óxido del óxido, en material de embalaje marinero, en paquetes hexagonales o en caja de madera
productividad: 40000 ton per year
transporte: Ocean,Land,Air
Lugar de origen: Zhejiang, China
Apoyo sobre: 50000 ton per year
Certificados : ISO 9001:2008 ISO 14001:2008 TS 16949
HS-Code: 7304191000
Hafen: Shanghai,Ningbo,Foshan
Tipo de Pago: L/C,T/T,D/P,Paypal,Money Gram,Western Union
Incoterm: FOB,CFR,CIF,FCA,CPT
GB / T 20409 Tubos de acero sin costuras múltiples con reborde para calderas de alta presión
Spec :
Material: 20G, 20MnG, 25MnG, 12CrMoG, 15CrMoG
Rango de tamaño : OD: 4-1200mm
WT: 0.3-200 mm
Longitud general: 8-12 m
Tolerancia:
De acuerdo con las siguientes tablas o solicitud de los clientes.
Propiedades mecánicas longitudinales de los tubos de tornillo internos a temperatura ambiente
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 |
El grado y la composición química del acero
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%. |
Característica:
ASEGURAMIENTO DE LA CALIDAD TORICH
Buena calidad superficial
Buena tolerancia de OD e ID controlada según el estándar técnico
Calidad estable
Prueba de Corriente Eddy 100%
Procesamiento: estiramiento en frío
Condiciones técnicas de suministro: tratamiento térmico
Ampliamente utilizado en el campo de : Caldera de alta presión
PRODUCTOS POR GRUPO : Tubos de acero sin costura
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.