TORICH INTERNATIONAL LIMITED
| Product Name | GB/T 20409 Multi-Rifled Seamless Steel Tubes for High-Pressure Boiler |
| Material | 20G , 20MnG , 25MnG , 12CrMoG , 15CrMoG |
| Surface | Oiled |
| Application | High-pressure boiler |
| Shape | Round |
| OD | 4-1200mm |
| WT | 0.3-200mm |
| Length | 8-12m |
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, |
| Supply Ability | 40000 Ton/Year |
| Delivery Time | 45 days |
| Packaging Details | Packing in wooden box，hexagonal bundles or other seaworthy ways. |
| Brand Name | TORICH |
| Model Number | GB/T 20409 |
| Certification | ISO 9001 ISO 14001 TS 16949 |
| Place of Origin | China |
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Product Specification
| Product Name | GB/T 20409 Multi-Rifled Seamless Steel Tubes for High-Pressure Boiler | Material | 20G , 20MnG , 25MnG , 12CrMoG , 15CrMoG |
| Surface | Oiled | Application | High-pressure boiler |
| Shape | Round | OD | 4-1200mm |
| WT | 0.3-200mm | Length | 8-12m |
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, | Supply Ability | 40000 Ton/Year |
| Delivery Time | 45 days | Packaging Details | Packing in wooden box，hexagonal bundles or other seaworthy ways. |
| Brand Name | TORICH | Model Number | GB/T 20409 |
| Certification | ISO 9001 ISO 14001 TS 16949 | Place of Origin | China |
| High Light | seamless steel pipe ，seamless carbon steel tube | ||
GB/T 20409 Multi-Rifled Seamless Steel Tubes for High-Pressure Boiler
Spec:
Material:20G , 20MnG , 25MnG , 12CrMoG , 15CrMoG
Size Range:OD:4-1200mm
WT:0.3-200mm
General Length:8-12m
Tolerance:
According to the following tables or customers’ request.
Longitudinal mechanical properties of internal screw tubes at room temperature
| Number | Grade | tensile strength
MPa(N/ | Lower yield strength/MPa((N/) | Elongation A/% | Impact energy
|
| 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 |
The grade and chemical composition of steel
| 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%. | ||||||||
Characteristic:
TORICH QUALITY ASSURANCE
Good surface quality
Good OD and ID tolerance controlled to Technical Standard
Stable quality
100% Eddy Current Test
Processing:Cold drawning
Technical Delivery Conditions:Heat treatment
Widely used in the field of:High-pressure boiler
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
25000000-30000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Company Overview A Professional Steel Tube Manufacturer and Solution Provider TORICH INTERNATIONAL LIMITED integrates steel tube manufacturing, international trade, warehousing, technical support and customized processing. Our manufacturing operations cover cold drawing, cold rolling, heat treat... Company Overview A Professional Steel Tube Manufacturer and Solution Provider TORICH INTERNATIONAL LIMITED integrates steel tube manufacturing, international trade, warehousing, technical support and customized processing. Our manufacturing operations cover cold drawing, cold rolling, heat treat...
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