TORICH INTERNATIONAL LIMITED
| Payment Terms | T/T L/C D/P D/A WesternUnion Others |
| Supply Ability | 60000 Ton/Year |
| Delivery Time | 30 days |
| Packaging Details | Packing in wooden, hexagonal box or other seaworthy ways |
| Product Name | Factory Direct Sale Seamless Steel Tubes for Structural Purposes GB/T 8162 |
| Keyword | Seamless Steel Tubes |
| Material | 10# 45# 20Mn 25Mn Q235 Q345 |
| Shape | Round |
| Usage | For structural purpsoes |
| OD | 3-1200mm |
| WT | 0.5-200mm |
| Length | 1-12m |
| Brand Name | TORICH |
| Model Number | GB/T 8162 |
| Certification | ISO 9001 ISO 14001 TS 16949 |
| Place of Origin | Zhejiang,China |
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Product Specification
| Payment Terms | T/T L/C D/P D/A WesternUnion Others | Supply Ability | 60000 Ton/Year |
| Delivery Time | 30 days | Packaging Details | Packing in wooden, hexagonal box or other seaworthy ways |
| Product Name | Factory Direct Sale Seamless Steel Tubes for Structural Purposes GB/T 8162 | Keyword | Seamless Steel Tubes |
| Material | 10# 45# 20Mn 25Mn Q235 Q345 | Shape | Round |
| Usage | For structural purpsoes | OD | 3-1200mm |
| WT | 0.5-200mm | Length | 1-12m |
| Brand Name | TORICH | Model Number | GB/T 8162 |
| Certification | ISO 9001 ISO 14001 TS 16949 | Place of Origin | Zhejiang,China |
| High Light | precision stainless steel tubing ，seamless carbon steel tube | ||
Seamless Steel Tubes for Structural Purposes GB/T 8162
Spec:
Material:10# 20# 45# 20Mn 25Mn Q235 Q345
Size Range:
OD:3-1200mm, WT:0.5-200mm, General Length:3-12m
Tolerance:
According to the following tables or customers’ request.
Characteristic:
Good concentricity
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
TORICH QUALITY ASSURANCE
Tolerance of the OD &WT:
OD Tolerance:
| Production Method | OD Tolerance |
| Hot Rolling(Extrusion) | ±1% or ±0.50mm |
| Cold Drawn(Cold Rolled) | ±1% or ±0.30mm |
Tolerance for wall thickness:
1.Wall thickness tolerance of Hot Rolling steel tube:
| Production Method | OD (DN) | WT/OD | Tolerance |
| Extruded tube | ≤102 | / | ±12.5% or ±0.40mm |
| ＞102 | ≤0.05 | ±15% or ±0.40mm | |
| ＞0.05-0.10 | ±12.5% or ±0.40mm | ||
| ＞0.10 | +12.5% -10% | ||
| Heat expanding steel tube | / | ±15% | |
2.Wall thickness tolerance of Cold Drawn(Cold Rolled) steel tube:
| Production Method | WT | Tolerance |
| Cold Drawn(Cold Rolled) steel tube | ≤3 | +15%/-10% or ±0.40mm |
| ＞3 | +12.5% -10% |
Bending tolerance:
WT≤15mm, Bending≤1.5mm/m
WT＞15mm~30mm, Bending≤2.0mm/m
WT＞30mm/OD≥351mm, Bending≤3.0mm/m
Ovality and Wall unevenness:
The ovality and wall unevenness should be no more than 80% of the OD and wall thickness.(Or according to customer`s request)
mechanical property
| Steel Grade | Tensile strength Rm N/mm2(MPa) | Yield Strength Rp0.2 N/mm2(MPa) | Elongation A % | |||
| Wall Thickness | ||||||
| ≤16mm | ＞16~30mm | ＞30mm | ||||
| 10 | ≥335 | ≥205 | ≥195 | ≥185 | ≥24 | |
| 15 | ≥375 | ≥225 | ≥215 | ≥205 | ≥22 | |
| 20 | ≥410 | ≥245 | ≥235 | ≥225 | ≥20 | |
| 25 | ≥450 | ≥275 | ≥265 | ≥255 | ≥18 | |
| 35 | ≥510 | ≥305 | ≥295 | ≥285 | ≥17 | |
| 45 | ≥590 | ≥335 | ≥325 | ≥315 | ≥14 | |
| 20Mn | ≥450 | ≥275 | ≥265 | ≥255 | ≥20 | |
| 25Mn | ≥490 | ≥295 | ≥285 | ≥275 | ≥18 | |
| Q235 | A | 375~500 | ≥235 | ≥225 | ≥215 | ≥25 |
| B | ||||||
| C | ||||||
| D | ||||||
| Q275 | A | 415~540 | ≥275 | ≥265 | ≥255 | ≥22 |
| B | ||||||
| C | ||||||
| D | ||||||
| Q295 | A | 390~570 | ≥295 | ≥275 | ≥255 | ≥22 |
| B | ||||||
| Q345 | A | 470~630 | ≥345 | ≥325 | ≥295 | ≥20 |
| B | ||||||
| C | ≥21 | |||||
| D | ||||||
| E | ||||||
| Q390 | A | 490~650 | ≥390 | ≥370 | ≥350 | ≥18 |
| B | ||||||
| C | ≥19 | |||||
| D | ||||||
| E | ||||||
| Q420 | A | 520~680 | ≥420 | ≥400 | ≥380 | ≥18 |
| B | ||||||
| C | ≥19 | |||||
| D | ||||||
| E | ||||||
| Q460 | C | 550~720 | ≥460 | ≥440 | ≥420 | ≥17 |
| D | ||||||
| E | ||||||
Test:
Processing:
RAW MATERIAL
↓
INCOMING INSPECTION
↓
STORAGE → CUTTING→HAMMERING → PICKING LUBRICATION → CLEANING → PHOSPHORI CLEAN
↓
ENDS CUTTING←STRAIGHTENING←HEAT TREATMENT↔MIDDLLE CHECK↔ COLD DRAWING ← LUBRICATING
↓
FINAL INSPECTION→BUNDING→STORAGE
Technical Delivery Conditions:Heat Treatment with Hot Rolling & Cold Drawn
Widely used in the field of:Transporting water,gas,oil etc
Product Images:
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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