TORICH INTERNATIONAL LIMITED
| Payment Terms | T/T, L/C, D/A, D/P, Western Union, MoneyGram |
| Supply Ability | 5000 tons per month |
| Delivery Time | 30-45 days |
| Packaging Details | packing in standard seaworthy packages |
| Product name | High Precision Seamless Steel Pipe NBK 8mm Wall Thickness |
| Keyword | High Precision Seamless Steel Pipe |
| Application | Hydraulic system,Automobile |
| Standard | DIN 2391 |
| Technique | NBK |
| Surface treatment | Galvanized, customerized, Copper Coated, Null, polished |
| Brand Name | TORICH |
| Model Number | DIN 2391 |
| Certification | ISO9001 TS16949 |
| Place of Origin | Zhejiang,CN |
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Product Specification
| Payment Terms | T/T, L/C, D/A, D/P, Western Union, MoneyGram | Supply Ability | 5000 tons per month |
| Delivery Time | 30-45 days | Packaging Details | packing in standard seaworthy packages |
| Product name | High Precision Seamless Steel Pipe NBK 8mm Wall Thickness | Keyword | High Precision Seamless Steel Pipe |
| Application | Hydraulic system,Automobile | Standard | DIN 2391 |
| Technique | NBK | Surface treatment | Galvanized, customerized, Copper Coated, Null, polished |
| Brand Name | TORICH | Model Number | DIN 2391 |
| Certification | ISO9001 TS16949 | Place of Origin | Zhejiang,CN |
| High Light | Cold Drawn Precision Seamless Steel Tube ，NBK Seamless Steel Tube ，8mm Wall Thickness Precision Seamless Steel | ||
High Precision Seamless Steel Pipe NBK 8mm Wall Thickness
OD:4-76mm
Wall thickness:0.5-8mm
Material:E215 E235 E355 ST35,ST37.4,ST45,ST52.4 etc
Chemical Composition
| Steel grade | C max. | Si max. | Mn max. | P max. | S max. | Altot min. | |
| Name | Number | ||||||
| E215 | 1.0212 | 0.10 | 0.05 | 0.7 | 0.025 | 0.015 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.2 | 0.025 | 0.015 | -- |
| E355 | 1.0580 | 0.22 | 0.55 | 1.6 | 0.025 | 0.015 | -- |
Tolerance
| Outer Diameter | Allowable tolerance | special tolerance | ||
| GB/T3639 | DIN2391 | OD | WT | |
| 4mm-20mm | ±0.10mm | ±0.08mm | ±0.05mm | ±0.05mm |
| 20mm-30mm | ±0.10mm | ±0.08mm | ±0.08mm | ±0.08mm |
| 31mm-40mm | ±0.15mm | ±0.15mm | ±0.10mm | ±0.08mm |
| 41mm-60mm | ±0.20mm | ±0.20mm | ±0.15mm | ±0.15mm |
| 61mm-80mm | ±0.30mm | ±0.30mm | ±0.20mm | ±0.20mm |
| 81mm-120mm | ±0.45mm | ±0.45mm | ±0.30mm | ±0.30mm |
Delivery condition:
The tubes can be produced in the following delivery conditions:
BK (+C) Cold finished/hard (cold finished as drawn).
No heat treatment after the last cold forming process.
BKW (+LC) Cold finished/soft (lightly cold worked)
After the last heat treatment there is a light finishing pass (cold drawing).
BKS (+SR) Cold finished/stress relieve annealed.
After the final cold forming process the tubes are stress relieve annealed.
GBK (+A) Annealed.
After the final cold forming process the tubes are annealed in a controlled atmosphere.
NBK (+N) Normalized. (Mainly focus on)
After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere
Production routing:
Quality carbon steel from bao steel etc big mill, cold drawing the heat treatment without oxidization , NBK condition. Do nondestructive testing ,HT tests and do dipping oil antirust protection, Packed tube in wooden boxes.
Main feature:
High precision
Excellent brightness
No oxidization on outer and inner walls after heat treatment
High cleanness of inside wall
High pressure
No deformation after clod bending
No crack after flaring and flattening
Color : Gray with white
Application:
Hydraulic system
Automobile
Tolerance
Name | Scope mm | DIN seriesmm |
| OD | 04-30 | ±0.08 |
| OD | 31-40 | ±0.15 |
| OD | 41-50 | ±0.20 |
| OD | 51-60 | ±0.25 |
| Wall | 0.5-7 | ±10% |
Key words
Precision Steel Tubes
Precision Seamless Steel Tubes
High Precision Seamless Steel Tubes/Pipe
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
Who We are ? -------A professional steel pipes materials inventor, manufacturer and solution providerTorich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which holds the ... Who We are ? -------A professional steel pipes materials inventor, manufacturer and solution providerTorich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which holds the ...
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