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High Precision Black Seamless Steel Pipe DIN2391 ST45

Basic Information
Place of Origin: China
Brand Name: SunShine
Certification: ISO9001
Model Number: 6mm to 114.3mm
Minimum Order Quantity: 5T
Packaging Details: In Bundles, Woodenbox As Your Requirement
Delivery Time: 30days
Payment Terms: L/C, T/T
Supply Ability: 2000T/Month
Detail Information
Name: Seamless Precision Tube OD. Range: 6mm – 114.3mm
Wall Thickness: 1mm-15mm Standard: DIN2391
Grade: ST35, ST37, ST45, ST52,ST35.2,ST52.2 Length: Max Length 12M
High Light:

ST37.4 black seamless steel pipe


DIN2391 black seamless steel pipe


din 2391 c st37 4

Product Description

DIN2391 Cold Drawn Pipe Seamless Tube ST35, ST37, ST45, ST52,ST35.2,ST52.2​


DIN 2391 Seamless cold-drawn tubes
DIN 2391 Seamless precision steel tubes
ST35 Precision tubes
ST45 Precision tubes
ST52 Precision tubes
Seamless precision tubes
DIN 2391 NBK Seamless Precision Steel Tubes
DIN 2391 ST35 Seamless precision steel tubes
DIN 2391 ST45 Seamless precision steel tubes
DIN 2391 ST52 Seamless precision steel tubes
ST 52 Honed tubes
ST52 cylinder tubes




Grade and Chemical Composition ( % )












St35 1.0308 0.17 ≥0..4 0.025 0.025 0.35
St45 1.0408 0.21 ≥0.4 0.025 0.025 0.35
St52 1.0508 0.22 ≤1.6 0.025 0.025 0.55


Mechanical properties

item grade

Cold finished (Hard)


Cold finished



Cold finished and stress-relieved


Annealed (GBK)



Rm A Rm A Rm ReH A Rm A Rm ReH A
1 ST35 480 6 420 10 420 315 14 315 25 340-470 235 25
2 ST45 580 5 520 8 520 375 12 390 21 440-570 255 21
3 ST52 640 4 580 7 580 450 10 450 22 490-630 355 22


High Precision Black Seamless Steel Pipe DIN2391 ST45 0



Q: What product information must I provide before making a purchase?
Please provide the grade, width, thickness, and surface treatment requirements, as well as the quantities you require.

Q: What shipping ports are there?
We normally ship from Shanghai,Tianjin, Qingdao, and Ningbo ports

Q: Is it possible to send samples?
Of course, we offer free samples and express shipping to customers all over the world.

Q: Do you offer a service for customized products?
Yes, we can produce according to your specifications and drawings.

Q: Can I pay you a visit at your factory?
Customers from all around the world are welcome to visit our factory.

Q: Can you assist me in importing steel products for the first time?
Yes, we have shipping agent who will arrange the shipment with you.

Q: Do you have any MOQ limit for production?
We don’t have any MOQ limit. But as for our steel pipe product, we usually use container transport for lower freight. In the case of express delivery, high freight charges will be generated.

Q: Is it OK to print my logo on the product or the carton packing?
Yes. Please inform us formally before our production and confirm the design firstly based on our sample.

Q: How to pack the product?
The inner layer has a waterproof paper outer layer, iron packaging, and is fixed with a fumigated wooden pallet. It
can effectively protect products from corrosion during ocean transportatio

Contact Details

Whatsapp : +8613961408918