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Honed DIN 2391 ST37 4 Tube Seamless St37 St52 1020 Dom A513 Steel Pipe

Basic Information
Place of Origin: China
Certification: ISO9001
Packaging Details: In Bundles, Woodenbox As Your Requirement
Detail Information
Name: Mill Factory Supplier Honed Tube Steel Seamless Pipe St37/ St52 / 1020 Keyword: Seamless Honed Tube
Standard: ASTM, API, Bs, DIN, API 5L, BS 1387, DIN EN 10216-1-2004, DIN 17175 Grade: 20#, 45#, ST35, ST45, ST52
Thickness: 3 - 35 Mm Shape: Round/Square/Rectangle
Surface Treatment: Hot Galvanized Wall Thickness: 2 - 60 Mm
Certificate: API, CE, Bsi, RoHS, SNI, BIS, SASO, PVOC, SONCAP, SABS, Sirm, Tisi, KS, JIS, GS, ISO9001 ID:: 20mm - 1500mm
Ends: Plain, Bevel, Screwed, Threaded Material: 30CrMo 42CrMo
Usage: Petroleum, Chemical,gas, Water, Metallurgy, Construction Length: 12M, 6m
Size: 1/2"-48" (DN15mm-1200mm) Technology: Hot Rolled/Cold Rolled/galvanized
Straightness: <=0.5/1000 Roughness: Ra 0.2-0.4 Um
Tolerance: ±5%, ±1%
High Light:

Honed din 2391 st37 4


Seamless din 2391 st37 4


Seamless 1020 dom a513

Product Description

Mill Factory Supplier Honed Tube Steel Seamless Pipe St37/ St52 / 1020





Applicable to hydraulic pressure, pneumatic cylinder,oil pump barrel, motor body, transmission shaft, etc.


Quality Standard

DIN 2391, EN 10305-1, SAE J524, ASTM A519 and GB3639



Raw materials- Cold drawn/rolled- Heat treatment(BKS)- Honed or SRB- packing


Steel Grade

ST52, ST52.3, E355, SAE1026, Q345B.

*Low temperature impact test upon request (27J/-20°C).



Processing Cylinder diameter Length /mm Straightness Size accuracy Wall thickness/mm Inner boreroughness
Cold Drawn/Rolled ID28~OD400 ≤12M 0.3~1.0m m/m H8-H11 ±5% 0.8~1.6um
Honed/SRB ID30~OD500 ≤12M 0.3~1.0m m/m H8 ±5% 0.4~0.8um



Inner hole size tolerance

ID size ID deviation (mm)
H7 H8 H9 H10
30 0.021 0.033 0.052 0.084
>30~50 0.025 0.039 0.062 0.1
>50~80 0.03 0.046 0.074 0.12
>80~120 0.035 0.054 0.087 0.14
>120~180 0.04 0.063 0.1 0.16
>180~250 0.046 0.072 0.115 0.185
>250~315 0.052 0.081 0.13 0.21
>315~400 0.0527 0.089 0.14 0.23



Honed DIN 2391 ST37 4 Tube Seamless St37 St52 1020 Dom A513 Steel Pipe 0



With anti-rust oil on inner diameter of each pipe,tube caps on both ends, hexagonal bundles of max 3,000 kg with several steel strips, nylon bag and waterproof paper package each bundle. Of course, customers can customize other packing way.


Our Advantages:
· Fast delivery
· Non-standard sizes and made-to-order
· Small min order quantity
· Economical Pricing
· Quality confirming to International Standards
· Material Test Certificates for Quality Assurance
· Technical Qualified After Sales
· Excellent Delivery Conditions


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