Basic Info.
Delivery Time
5-40 Days According to The Quantity You Need
Transport Package
Two Ends Sealed with Plastic Caps, Bundling with P
Specification
OD: 4-89mm WT: 0.5-10mm
Product Description
SpecificationCold Drawn / Rolled Seamless Precision Steel Tubes Confirming to DIN2391; EN10305-1; EN10305-4 Steel Grade: ST37.4, ST35, E235, E355 Delivery Condition: NBK Length: 3-6m Packing: Internal wrapped with plastic foil |
OD | Thickness (mm) |
mm |
6 | 6*1 | 6*1.5 | 6*2 | | | | | | | | |
8 | 8*1 | 8*1.5 | 8*2 | | | | | | | | |
10 | 10*1 | 10*1.5 | 10*2 | | | | | | | | |
12 | 12*1 | 12*1.5 | 12*2 | 12*2.5 | | | | | | | |
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 | | | | | | |
16 | 16*1 | 16*1.5 | 16*2 | 16*2.5 | 16*3 | | | | | | |
18 | | 18*1.5 | 18*2 | 18*2.5 | 18*3 | 18*3.5 | 18*4 | | | | |
20 | | 20*1.5 | 20*2 | 20*2.5 | 20*3 | 20*3.5 | 20*4 | | | | |
22 | | 22*1.5 | 22*2 | 22*2.5 | 22*3 | 22*3.5 | 22*4 | | | | |
25 | | | 25*2 | 25*2.5 | 25*3 | 25*3.5 | 25*4 | | | | |
28 | | | 28*2 | 28*2.5 | 28*3 | 28*3.5 | 28*4 | | | | |
30 | | | 30*2 | 30*2.5 | 30*3 | 30*3.5 | 30*4 | 30*4.5 | 30*5 | | |
32 | | | 32*2 | 32*2.5 | 32*3 | 32*3.5 | 32*4 | 32*4.5 | 32*5 | | |
34 | | | 34*2 | 34*2.5 | 34*3 | 34*3.5 | 34*4 | 34*4.5 | 34*5 | 34*6 | |
35 | | | 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*2.5 | 40*3 | 40*3.5 | 40*4 | 40*4.5 | 40*5 | 40*6 | |
42 | | | | 42*2.5 | 42*3 | 42*3.5 | 42*4 | 42*4.5 | 42*5 | 42*6 | |
45 | | | | 45*2.5 | 45*3 | 45*3.5 | 45*4 | 45*4.5 | 45*5 | 45*6 | |
46 | | | | 46*2.5 | 46*3 | 46*3.5 | 46*4 | 46*4.5 | 46*5 | 46*6 | |
48 | | | | 48*2.5 | 48*3 | 48*3.5 | 48*4 | 48*4.5 | 48*5 | 48*6 | |
50 | | | | 50*2.5 | 50*3 | 50*3.5 | 50*4 | 50*4.5 | 50*5 | 50*6 | |
54 | | | | | 54*3 | 54*3.5 | 54*4 | 54*4.5 | 54*5 | 54*6 | |
60 | | | | | 60*3 | 60*3.5 | 60*4 | 60*4.5 | 60*5 | 60*6 | 60*8 |
Note: 1. We can produce other specification as your requirements. 2. Surface treatment: Bright, galvanized (yellow, white, colorful), phosphated green passivation. 3. If you need other sizes, we also can produce. |
Chemical CompositionSteel 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 | -- |
ToleranceOuter 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 |
Mechanical PropertiesSteel grade | Yield strengtha | Tensile strength | Elongation |
Name | Number | ReH | Rm | A |
min. | min. | min. |
MPa | MPa | % |
E215 | 1.0212 | 215 | 290 to 430 | 30 |
E235 | 1.0308 | 235 | 340 to 480 | 25 |
E355 | 1.0580 | 355 | 490 to 630 | 22 |
Delivery ConditionDesignation | 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 (+LC) | The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding) |
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 assurance1.Strictly according to DIN2391/EN10305
2.Sample: Sample is free for test.
3.Test:salt spray test/tensile test / Eddy current / chemical composition test according to customers' request
4.Certificate:IATF16949,ISO9001,SGS etcOur services1. MOQ: if the size is Metric, it's no MOQ, if the size is Inch, the MOQ is 1 ton per size
2. OEM: we can produce the tubes as client's demand
3. Good Quality: we strictly control every production process to ensure the high quality
4. After-sales service: we not only guarantee the precision tubes'
quality but also provide technical support
5. Fast delivery: if we have precision tubes in stock, will deliver the tubes after 5-15 days.
If we don't have the raw material, will deliver the tubes after 30-40 days according to the quantity.FAQQ: Are you trading company or manufacturer ?
A: We are professional steel tube manufacture since 2003
Q:What certificates do you have ?
A:IATF16949,ISO9001,SGS
Q: How long is your delivery time?
A: According to quantity .Generally 50days after receive deposit ,
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Address:
No. 11 Jingwei Road, Economic Development Zone, Tongshan, Xuzhou, Jiangsu, China
Business Type:
Manufacturer/Factory
Business Range:
Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy
Management System Certification:
ISO 9001, IATF16949
Company Introduction:
Xuzhou Global Precision Steel Tube Co., Ltd develops and produces the high quality seamless steel tubes. As one of the leading manufacturers in China, confirming to DIN2391/C, EN10305 and SAE J524 standard. We develops customized tubes solutions for Automotive, engineering machinery, railway locomotive, ships and hydraulic systems, etc.
We focus on R & D and keep improving the quality of our tube, selects the high quality steel billet, and when the production of manufacturing, every process is strictly controlled and tested to insure quality. Our products benefit from very good bending and forming properties, and stand out through good adhesion and high ductility.
Our company is located in Xuzhou City, Jiangsu Province, which is only 2.5 hours from Shanghai. The factory covers an area of 68000, with many professional production lines and testing equipment. We have more than 300 employees, and our annual output is up to 18000 tons. Our products are covering many industry fields and accepted by customers abroad 60 countries.
We have set up a quality management system assuring the quality of all the produces and service provided. ( IATF16949, ISO9001, SGS gained)