TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 20000Ton/year |
| Delivery Time | 30-35 work days |
| Packaging Details | packing in wooden boxes or in hexagonal bundles |
| Product Name: | GB/T 8162 Material 20Mn 25Mn Q235 Q345 Seamless Steel Tubes for Structural Purpose |
| Keyword | Seamless Steel Tubes |
| Material | 10# 45# 20Mn 25Mn Q235 Q345 |
| Shape | Round |
| Usage | For Structural Purpsoes |
| OD | 5-1200mm |
| WT | 0.5-200mm |
| Length | 1-12m |
| Brand Name | TORICH |
| Model Number | GB/T 8162 |
| Certification | ISO9001:2008,ISO14001:2008,TS16949 |
| Place of Origin | Zhejiang,China |
View Detail Information
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 20000Ton/year |
| Delivery Time | 30-35 work days | Packaging Details | packing in wooden boxes or in hexagonal bundles |
| Product Name: | GB/T 8162 Material 20Mn 25Mn Q235 Q345 Seamless Steel Tubes for Structural Purpose | Keyword | Seamless Steel Tubes |
| Material | 10# 45# 20Mn 25Mn Q235 Q345 | Shape | Round |
| Usage | For Structural Purpsoes | OD | 5-1200mm |
| WT | 0.5-200mm | Length | 1-12m |
| Brand Name | TORICH | Model Number | GB/T 8162 |
| Certification | ISO9001:2008,ISO14001:2008,TS16949 | Place of Origin | Zhejiang,China |
| High Light | seamless steel pipe ，seamless carbon steel tube | ||
GB/T 8162 Material 10# 45# 20Mn 25Mn Q235 Q345 Seamless Steel Tubes for Structural Purpose
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
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