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| Categories | Precision Steel Tube |
|---|---|
| Brand Name: | TORICH |
| Model Number: | EN10305-1 |
| Certification: | ISO 9001 |
| Place of Origin: | Zhejiang China |
| MOQ: | 0.5 Ton |
| Price: | USD 1500-2000 Per Ton |
| Payment Terms: | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability: | 500 Tons Per Month |
| Delivery Time: | 4-6 Weeks |
| Packaging Details: | In bundles |
| OD: | 6-240mm |
| WT: | 1-15mm |
| L: | 1-12m |
| Application: | Hydraulic Steel Tube |
| Company Info. |
| TORICH INTERNATIONAL LIMITED |
| Verified Supplier |
| View Contact Details |
| Product List |
BNK EN10305 Cold Drawn Seamless Precision Steel Tube For Hydraulic Steel Tube
Hydraulic steel tube | |||||
Standard | Material | Delivery | Surface | Sizes | |
| DIN | 2391/1630/2445 | ST37.4 ST52.4 | NBK | 1) BA 2)Black phosphating 3) Galvanizing | OD 2 -60mm * WT0.3 -10mm |
EN | 10305-4 | E235 E355 | (+)N | ||
BS | 3602 | CFS 360 | Zinc Layer thickness more than 8um | ||
Other steel grades also available upon request | |||||
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
Steel Grade | Yield Strength | Tensile Strength | Elongation | |
| Name | Number | Min Mpa | Min Mpa | % |
| E215 | 1.0212 | 215 | 290-430 | 30 |
| E235 | 1.0308 | 235 | 340-480 | 25 |
| E355 | 1.0580 | 355 | 490-630 | 22 |
OD | Allowed Tolerance | Special Tolerance | ||
| GB/T3639 | DIN2391 | OD | WT | |
| 4mm-20mm | ±0.1mm | ±0.08mm | ±0.05mm | ±0.05mm |
| 20mm-30mm | ±0.1mm | ±0.08mm | ±0.08mm | ±0.08mm |
| 31mm-40mm | ±0.15mm | ±0.15mm | ±0.10mm | ±0.08mm |
| 41mm-60mm | ±0.2mm | ±0.20mm | ±0.15mm | ±0.15mm |
| 61mm-80mm | ±0.3mm | ±0.30mm | ±0.20mm | ±0.20mm |
| 81mm-120mm | ±0.45mm | ±0.45mm | ±0.30mm | ±0.30mm |
Main Features:
White galvanized, color galvanized (yellow galvanized),olive green.
After galvanization, the outer wall of tube has good brightness, good property for antirust and anticorrosion.



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