Factory Customized Hot Rolled Cold Rolled Cold Drawn Carbon Steel Hollow Seamless Steel Tube Pipe
The customer satisfaction is our primary target. We uphold a consistent level of professionalism, quality, credibility and service for Factory Customized Hot Rolled Cold Rolled Cold Drawn Carbon Steel Hollow Seamless Steel Tube Pipe, Our business has already setup a professional, creative and responsible workforce to develop purchasers together with the multi-win principle.
The customer satisfaction is our primary target. We uphold a consistent level of professionalism, quality, credibility and service for China Steel Pipe and Seamless Steel Pipe, Welcome to visit our company, factory and our showroom where displays various hair solutions that will meet your expectation. Meanwhile, it is convenient to visit our website, and our sales staff will try their best to deliver you the best service. Be sure to contact us if you want more information. Our aim is to help customers realize their goals. We are making great efforts to achieve this win-win situation.
Features
The tube could be bending, flaring and flattening without crack. It has high precision, on oxide layer on both sides of the tube. It can be used for various complex deformation and machining. BA high precision seamless steel tube is usually used for hydraulic cylinder, diesel, hydraulic pump station and hydraulic system which are require the steel tube in high precision and cleanliness.
Specification
| Standard | DIN2391 DIN1630 EN10305 DIN2445 JIS G3445 SAE J524 |
| Grade | ST35/E235 ST37.4 ST45/E255 ST52/E355 |
| Delivery Condition | NBK(+N) BK(+C) GBK(+A) BKW(+LC) BKS(+SR) |
| Size | OD:4 to 219mm Thickness 0.5-35mm, Length: 3m,5.8,6 or according to requirements |
| Finish | Galvanized surface (Sliver/Yellow/Colorful) Zinc coating of 8-12um |
| Application | Hydraulic System; Car/bus; construction vehicle |
| Delivery time | A.3 days if this good is stock goods.B. About 30 days according to the quantity |
| HYDRAULIC PRECISION STEEL TUBE IN STOCK | ||||||||||
| OD | Thickness(mm) | |||||||||
| mm | ||||||||||
| 4 | 4*1 | |||||||||
| 6 | 6*1 | 6*1.5 | 6*2 | |||||||
| 8 | 8*1 | 8*1.5 | 8*2 | |||||||
| 10 | 10*1 | 10*1.5 | 10*2 | 10*2.5 | ||||||
| 12 | 12*1 | 12*1.5 | 12*2 | 12*2.5 | 12*3 | |||||
| 14 | 14*1 | 14*1.5 | 14*2 | 14*2.5 | 14*3 | |||||
| 15 | 15*1 | 15*1.5 | 15*2 | 15*2.5 | 15*3 | 15*3.5 | ||||
| 16 | 16*1 | 16*1.5 | 16*2 | 16*2.5 | 16*3 | 16*3.5 | 16*4 | 16*4.5 | ||
| 18 | 18*1 | 18*1.5 | 18*2 | 18*2.5 | 18*3 | 18*3.5 | 18*4 | 18*4.5 | ||
| 20 | 20*1 | 20*1.5 | 20*2 | 20*2.5 | 20*3 | 20*3.5 | 20*4 | 20*4.5 | 20*5 | |
| 22 | 22*1 | 22*1.5 | 22*2 | 22*2.5 | 22*3 | 22*3.5 | 22*4 | 22*4.5 | 22*5 | |
| 25 | 25*1 | 25*1.5 | 25*2 | 25*2.5 | 25*3 | 25*3.5 | 25*4 | 25*4.5 | 25*5 | |
| 28 | 28*1 | 28*1.5 | 28*2 | 28*2.5 | 28*3 | 28*3.5 | 28*4 | 28*4.5 | 28*5 | |
| 30 | 30*1 | 30*1.5 | 30*2 | 30*2.5 | 30*3 | 30*3.5 | 30*4 | 30*4.5 | 30*5 | 30*6 |
| 32 | 32*1.5 | 32*2 | 32*2.5 | 32*3 | 32*3.5 | 32*4 | 32*4.5 | 32*5 | 32*6 | |
| 34 | 34*1.5 | 34*2 | 34*2.5 | 34*3 | 34*3.5 | 34*4 | 34*4.5 | 34*5 | 34*6 | |
| 35 | 35*1.5 | 35*2 | 35*2.5 | 35*3 | 35*3.5 | 35*4 | 35*4.5 | 35*5 | 35*6 | |
| 38 | 38*2 | 38*2.5 | 38*3 | 38*3.5 | 38*4 | 38*4.5 | 38*5 | 38*6 | ||
| 40 | 40*2 | 40*2.5 | 40*3 | 40*3.5 | 40*4 | 40*4.5 | 40*5 | 40*6 | ||
| 42 | 42*2 | 42*2.5 | 42*3 | 42*3.5 | 42*4 | 42*4.5 | 42*5 | 42*6 | ||
| 45 | 45*2 | 45*2.5 | 45*3 | 45*3.5 | 45*4 | 45*4.5 | 45*5 | 45*6 | ||
| 46 | 46*2 | 46*2.5 | 46*3 | 46*3.5 | 46*4 | 46*4.5 | 46*5 | 46*6 | ||
| 48 | 48*2 | 48*2.5 | 48*3 | 48*3.5 | 48*4 | 48*4.5 | 48*5 | 48*6 | ||
| 50 | 50*2 | 50*2.5 | 50*3 | 50*3.5 | 50*4 | 50*4.5 | 50*5 | 50*6 | ||
| 54 | 54*2.5 | 54*3 | 54*3.5 | 54*4 | 54*4.5 | 54*5 | 54*6 | |||
| 60 | 60*2.5 | 60*3 | 60*3.5 | 60*4 | 60*4.5 | 60*5 | 60*6 | |||
| 65 | 65*3 | 65*3.5 | 65*4 | 65*4.5 | 65*5 | 65*6 | ||||
| 75 | 75*3.5 | 75*4 | 75*4.5 | 75*5 | 75*6 | |||||
| 76 | 76*4 | 76*4.5 | 76*5 | 76*6 | ||||||
| 89 | 89*6 | |||||||||
| Note： We could produce other sizes as your requirements. Surface Treatment: Bright, Galvanized, Phosphated etc. |
||||||||||
Chemical composition
| Steel Grade | C | Si | Mn | P | S | Al | |
| Name | No. | max | max | max | max | max | max |
| E215 | 1.0212 | 0.1 | 0.05 | 0.7 | 0.025 | 0.015 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.2 | 0.025 | 0.015 | — |
| E355 | 1.058 | 0.22 | 0.55 | 1.6 | 0.025 | 0.015 | — |
| ST35 | 1.0308 | 0.17 | 0.35 | 0.4（min） | 0.025 | 0.025 | — |
| ST45 | 1.0408 | 0.21 | 0.35 | 0.4（min） | 0.025 | 0.025 | — |
| ST52 | 1.058 | 0.22 | 0.55 | 1.6 | 0.025 | 0.025 | — |
Mechanical properties
| Steel Grade | Yield Strength (Mpa) | Tensile Strength (Mpa) | Elongation（%） | |
| Name | No. | ReH (min) | Rm(min) | A(min) |
| E215 | 1.0212 | 215 | 290 to 430 | 30 |
| E235 | 1.0308 | 235 | 340 to 480 | 25 |
| E355 | 1.058 | 355 | 490 to 630 | 22 |
| ST35 | 1.0308 | 235 | 340 to 480 | 25 |
| ST45 | 1.0408 | 255 | 440 to 570 | 21 |
| ST52 | 1.058 | 355 | 490 to 630 | 22 |
Tolerance
|
OD |
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
| Designation | Symbol | Description |
| Cold finished (hard) | BK(+C) | Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation |
| Cold finished (Soft) | BKW | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (eg. bending, expanding) |
| (+LC) | ||
| Cold finished and stress-relieved | BKS(+SR) | Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree. |
| Annealed | GBK(+A) | The last Cold forming process is followed by annealing in a controlled atmosphere. |
| Normalized | NBK(+N) | The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere. |
Quality assurance
1.Strict according to DIN2391/EN10305 or other standards.
2. Sample: Sample is free for test.
3. Tests: Salt spray test/Tensile test / Eddy current / Chemical composition test according to customers’ request
4.Certificate: IATF16949, ISO9001, SGS etc.
5.EN 10204 3.1 Certification
Application
The customer satisfaction is our primary target. We uphold a consistent level of professionalism, quality, credibility and service for Factory Customized Hot Rolled Cold Rolled Cold Drawn Carbon Steel Hollow Seamless Steel Tube Pipe, Our business has already setup a professional, creative and responsible workforce to develop purchasers together with the multi-win principle.
Factory Customized China Steel Pipe and Seamless Steel Pipe, Welcome to visit our company, factory and our showroom where displays various hair solutions that will meet your expectation. Meanwhile, it is convenient to visit our website, and our sales staff will try their best to deliver you the best service. Be sure to contact us if you want more information. Our aim is to help customers realize their goals. We are making great efforts to achieve this win-win situation.
