Cold rolled precision seamless steel tubes
1）OD: 10--110mm,WT:1.0—8.0mm
2）material : 10#,20#,45#, SAE1010, SAE1020, SAE1045, 37Mn5,40Cr, ST35, ST52 etc
3）standard: GB/T3639-2009, DIN2391, SAE1536, ASTM A53, EN10305
4）length: 400-800mm fixed length or 3000-5800mm fixed length or random length
5）heat treatment: BK, BKS, BKW,GBK, NBK (details as below )
6）surface treatment: oiled, polished, honed
7）ends processing: plain ends, ends chamfer
Finished products
1. BK(+C): No heat treatment after last cold forming process.
2. BKW(+LC): After last heat treatment there is a light finishing pass(cold drawing)
3. BKS(+SR): After the final cold forming process the tubes are stress relieve annealed.
4. GBK(+A): After the final cold forming process the tubes are annealed in a controlled atmosphere.
5. NBK(+N): After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.
Application
1) shock absrober for motorcycle and automobile
2) hydraulic gas cylinder
3) precision machine precision pipe part
4) other auto pipe parts
Packing
1. Bundle Packing.
2. Plain end or vanished as per customer's request.
3. Wrapped in waterproof paper.
4. Sackcloth with several steel strips.
5. Pack in heavy tri-wall boxes.
Kindly note
If clients have special requirements on the material, tube size, tube type, mechanical property, length, or packing conditions, Please feel free to contact us and we will try our best to do it as customizing.
Problems and sloving ways
1) Are you a trading company and manufacturer?
Yes, we have have plant and trading company, we can deal business both, but do it as condition.
2) How can I get your prices?
Please show us your target tube size (OD ,wall) and tolerance on OD/ID, material (steel grade), length tube (if length, random length or fix length ?), mechanical property (tensile strength, yield strength, elongation, hardness, roughness of OD/ID), quantity, packing requirement, application and specialy requirement. Then,we can send you an exact quotation within 24 hours.
3) What's your MOQ?
For common coating type and common size, MOQ is 3000kg ; for specially coatinf type or specialy size need confirmed.
4) How can I get some samples to do quality approved?
After quotation confirmed, we can send some samples for testing, severl pieces tube are free,but big quantity maybe charged and freight should be bear by client.
5) What about the Seamless Steel Pipes Used in Autombile Suitable for drive axle bridge shell shaft tube time for mass order producing?
Usually, 15-20 days for material preparing and producing after order confirmed, and 10 days for shipment booking and confirmed.30 days min for common size and type, special size and type need confirm.
6) Could the tube be customized for us?
Sure, we are professional supplier.when we confirmed and accept all your target requirement,we can customize the tube as your target.
Seamless Steel Pipe mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the Seamless Steel Pipes Used in Autombile Suitable for drive axle bridge shell shaft tube mechanical properties of the corresponding standard specifies. Seamless Steel Pipe surface quality, appearance, dimensional accuracy Seamless Steel Pipes Used in Autombile Suitable for drive axle bridge shell shaft tube better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.
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Seamless Steel Pipe deep processing of high value-added products. Such as electro-galvanized, hot dip galvanized, electro-galvanized fingerprint resistant, painted steel roll damping composite steel, Seamless Steel Pipes Used in Autombile Suitable for drive axle bridge shell shaft tube laminating steel plates, etc, so that the excellent quality of these products has a beautiful, high resistance to corrosion, has been widely used.