DIN 2391 St52 • DIN 17100 St52.3 • EN 10305-1

ST52 Pipe

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ST52 Pipe Abstract

Grades, Bore Finish & Ex-Stock Sizes In One View

Bore Finish

Honed • Skived & Roller Burnished

Ready for direct seal & piston running

Governing Standard

DIN 2391 St52 / DIN 17100 St52.3

EN 10305-1 • Material No. 1.0570

Size Window

15mm – 610mm OD

Wall 1mm – 40mm, ex-stock

Yield Strength

355 N/mm² min

Tensile 490–630 N/mm²

Construction

Seamless, ERW & Welded

Round, square & rectangular

Documentation

EN 10204 3.1 / 3.2

Batch-wise MTC, PMI on request

Precision You Can Trust – The Aesteiron Edge On Every ST52 Pipe Order

Bore Finish Guaranteed

Roundness & Ra checked before packing

One MTC, Two Standards

DIN 2391 & DIN 17100 cross-referenced

No Minimum Order

One length or a full container, same desk

Ports Across 3 Continents

Shipping lanes into GCC, Africa & Americas

In-House Metallurgist

Chemistry verified heat by heat

Straight Ex-Works Pricing

Stockist rates with no broker markup

DIN 2391 ST52 Honed Cylinder Tube Supplier in India holds wall thickness tolerance

Aesteiron Steels LLP supplies ST52 Pipe for hydraulic cylinder barrels, piston rods, crane booms and machine frames where plain carbon tube simply cannot hold the pressure cycles or the load path. Our precision tube program spans plain seamless stock through to honed, ready-to-seal cylinder tube pulled to close roundness and bore-finish tolerance. Buyers looking for a reliable ST52 Pipe Supplier in India rely on our ex-stock inventory across seamless and welded construction, cut and packed for next-day loading.

Every batch of our DIN 2391 St52 Pipe is dual referenced against DIN 17100 St52.3 and EN 10305-1, and our warehouse network moves stock through the Middle East, Africa and the Americas for quick container turnaround. Our name as a dependable 1.0570 Pipe Stockist rests on batch-wise mill certificates, PMI screening and ex-works pricing with no hidden broker margin.

What draws repeat business is a working ISO 9001:2015 quality system, an in-house inspection bay that checks bore finish and ovality on every honed length, and a supply footprint touching 80+ countries. From a single trial length to a full container programme, Aesteiron delivers as a genuine ST52 Pipe Supplier, right on schedule.

1ST52 Pipe Specification

ST52 Pipe

 

DIN 2391 ST52 Seamless pipe Standards

  • DIN 2391 St52
  • DIN 17100 St52.3
  • EN 10305-1

1.0570 St52.3 High Pressure Pipe Sizes

  • OD 15mm to 610mm
  • Wall: 1mm to 40mm
  • Custom OD/ID on drawing

EN 10305-1 ST52 Square Pipe Length

  • Single Random 5–7m
  • Double Random 11–13m
  • Cut-to-length available

S355 ST 52 Round pipe Bore Finish

  • Honed – Ra 0.4–0.8 µm
  • Skived & Roller Burnished
  • Plain / Mill Bore

ST52 ERW Pipe End Finish

  • Plain, Beveled or Threaded
  • Descaled / Pickled / Bright
  • Chamfered on request

DIN 2391 ST52 Welded Pipe Testing

  • Hydrostatic Test
  • UT / Eddy Current / Flattening
  • Bore Roundness & Ra Check

ST52 Boiler Pipe Condition

  • Normalized
  • Cold Drawn / Cold Finished
  • BKW Hot Finished

ST52.3 Welded Pipe Certification

  • EN 10204 3.1 / 3.2
  • Mill Test Certificate
  • Third-party inspection on request

EN 10305-1 ST52 Rectangular Pipe Tolerance

  • OD ±0.5% (drawn)
  • WT ±10%
  • Per DIN 2391 Class 2

ST52 NBK Pipe Form

  • Round
  • Square / Rectangular
  • Custom drawn shapes

ST52 Pipe Grades We Stock

  • St52.3 – General Purpose
  • St52.0 – Reference Class
  • S355 J2H – Cross-Referenced

1.0570 ST52.3 High Pressure Pipe Surface

  • Black / Mill Finish
  • Polished / Bright Drawn
  • Zinc-Phosphate on request

ST52 BKW Hot Finished Pipe Material Surface

  • Bright + Black Phosphate
  • Bright + Zinc Galvanized
  • Can Be Supplied Bright

ST52 DIN 2391 Square Pipe Finished Product Condition

  • BKS (+SR) – Stress Relieved
  • BK (+C) – Cold Finished Hard
  • GBK (+A) / BKW (+LC) / NBK (+N)

ST52 Seamless Pipe Ends

  • Screwed
  • Beveled / Threaded
  • Plain End

S355 ST 52 Honed Cylinder Pipe Delivery

  • Polished
  • Bright & Annealed
  • Annealed & Pickled

1.0570 Cold Rolled Pipe Schedules

  • SCH 5 / SCH 10 / SCH XS
  • SCH 40 / SCH 80 / SCH 80S
  • SCH 160 / SCH XXS

ST52 0 Honed Pipe Welding Methods

  • GMAW / GTAW / SMAW
  • MIG / TIG
  • Brazing

DIN 17100 St52.3 Applications

  • Food Processing Lines
  • Structural Applications
  • Farm Machinery & Fluid/Gas Lines

1.0570 St52.3 Honed Cylinder Pipe Manufacturing

  • Seamless
  • ERW / Welded
  • Cold Drawn

S355 St52 Seamless Round Pipe Certificates

  • MTC EN 10204 3.1 / 3.2
  • Raw Material Cert. & DFARS Compliant
  • Invoice & Third Party Inspection Report
HSN Code – Seamless: 7304 7304 39 / 7304 59 HSN Code – Welded: 7306 GST 18%

ST52 Seamless Precision Steel Pipe Stockist in Mumbai With fine surface roughness

2ST52 NBK Seamless Pipe Roughness

Type Roughness [mm] Roughness [inch]
DIN 17100 ST52-3, drawn, new 0.02 - 0.1 0.0008 - 0.004
welded, new 0.05 - 0.1 0.002 - 0.004
galvanized, new 0.15 0.006
ST52 Seamless, cleaned, used 0.15 - 0.2 0.006 - 0.008
lightly corroded 0.1 - 0.4 0.004 - 0.016
severely corroded 0.4 - 3 0.016 - 0.12
light scaling 1 - 1.5 0.04 - 0.06
heavy scaling 1.5 - 4 0.06 - 0.16
bitumed coated 0.05 0.002
ST52 Pipe Sales Support Across Asia
Myanmar
Naypyidaw
Singapore
City-State
Laos
Vientiane
Malaysia
Kuala Lumpur
Taiwan
Taipei
Vietnam
Ho Chi Minh
Cambodia
Phnom Penh
Thailand
Bangkok
Mongolia
Ulaanbaatar
Brunei
Bandar Seri
Indonesia
Jakarta
Philippines
Manila

Jindal Make ST52 BKW Hot Finished Pipe in every metric sizes With consistent hydraulic builds

3DIN 17100 ST52.3 Hot Finished Pipe Metric Sizes

Experienced ST52 Pipe stockist in Mumbai offering complete Metric Size range for every project need

Wall Thickness (mm) Outer Diameter (mm) Weight (Kg per meter) Inner Diameter (mm)
5 35 3.70 25
5 50 5.55 40
5 40 4.32 30
5 55 6.17 45
10 130 29.59 110
5 60 6.78 50
7.5 70 11.56 55
5 58 6.53 48
6 75 10.21 63
7.5 65 10.63 50
5 80 9.25 70
7.5 85 14.33 70
7.5 90 15.26 75
7.5 95 16.18 80
10 110 24.66 90
12.5 105 28.51 80
10 120 27.13 100
10 100 22.19 80
10 125 28.36 105
10 115 25.89 95
Full metric size list on request Custom OD/wall combinations available
Get Vallourec St52 Honed Tube built mirror-smooth Finish For seal-tight cylinder performance

4DIN2391 ST52 Round pipe Surface Finishes

Reputed ST52 Pipe Exporter in India delivering superior Surface Finish for critical applications.

Honed Bore Finish

Skived & Roller Burnished

Black (Mill) Finish

Bright Annealed

Shot Blasted

Pickled & Oiled

ST52 Pipe Weekly Dispatch to Europe
Finland
Helsinki
Netherlands
Amsterdam
Georgia
Tbilisi
Germany
Berlin
Armenia
Yerevan
Italy
Rome
Azerbaijan
Baku
Belgium
Brussels
France
Paris
Andorra
Andorra la Vella

 

5Types of ST52 Pipe

Trusted ST52 Pipe Supplier in India providing multiple Types including seamless and welded options.

S355 ST 52 Seamless Pipe

S355 ST 52 Seamless Pipe

  • Shape: Round
  • Standard: DIN 2391
  • Size: 15mm–610mm OD
  • Best For: General fabrication
DIN 2391 ST52 Honed Cylinder Tube

DIN 2391 ST52 Honed Cylinder Tube

  • Wall: Heavy-wall option
  • Testing: 100% hydrostatic
  • Rating: High burst margin
  • Best For: Hydraulic power lines
EN 10305-1 ST52 Honed Hydraulic Cylinder Pipe

EN 10305-1 ST52 Honed Hydraulic Cylinder Pipe

  • Bore: Honed, seal-ready
  • Tolerance: Tight roundness
  • Finish: Ra 0.4–0.8 µm
  • Best For: Cylinder barrels
ST52 0 Seamless cold drawn Pre-honed Pipe

ST52 0 Seamless cold drawn Pre-honed Pipe

  • Rating: High temperature duty
  • Standard: EN 10305-1
  • Testing: Hydro + UT
  • Best For: Boiler headers
DIN 17100 ST52.3 Hot Finished Pipe

DIN 17100 ST52.3 Hot Finished Pipe

  • Shape: Square
  • Formed: Cold-formed & welded
  • Size: Custom side length
  • Best For: Machine frames
1.0570 St52.3 Seamless Round Pipe

1.0570 St52.3 Seamless Round Pipe

  • Construction: ERW / EFW
  • Standard: DIN 17100
  • Size: Large diameter
  • Best For: High volume runs
ST52 DIN 2391 High Pressure Seamless Boiler Pipe

ST52 DIN 2391 High Pressure Seamless Boiler Pipe

  • Shape: Rectangular
  • Corners: Sharp or radius
  • Wall: Uniform drawn wall
  • Best For: Structural frames
ST52 BKW Precision Seamless Pipe

ST52 BKW Precision Seamless Pipe

  • Shape: Round
  • Standard: DIN 2391 / DIN 17100
  • Finish: Bright or black
  • Best For: Shafts & struts
DIN 2391 ST52 Cold Rolled Pipe

DIN 2391 ST52 Cold Rolled Pipe

  • Weld: Electric resistance
  • Standard: EN 10305-1
  • Cost: Economical option
  • Best For: General engineering
ST52 Steel Hydraulic Cylinder Pipe handles high pressure cycle With proven mechanical properties

6S355 ST 52 Seamless pipe Mechanical Properties

Yield Strength

Wall ≤ 16mm
355 N/mm² min
Wall 16–40mm
345 N/mm² min

Tensile Strength

Range
490–630 N/mm²

Elongation

A5, min
≥22%
Density: 7.85 g/cm³ Impact Energy: 27J @ -20°C (J2) Modulus of Elasticity: 205 GPa

Need ST52 Pipe Priced Today?

Share your bore finish, size and schedule – Aesteiron’s desk replies with pricing, MTC and lead time within 48 hours.

Get My Quote Now

7EN 10305-1 ST52 Welded Pipe Chemical Composition

Leading ST52 Pipe Supplier in India offering Accurate Chemical Composition as per EN 10305 standards.

ElementCarbon (C)Manganese (Mn)Silicon (Si)P (max)S (max)
St52.3 / 1.0570≤0.20≤1.60≤0.550.0250.025

8ST52 Steel Hydraulic Cylinder Pipe Hardness Chart

160–190 HB

Normalized, Typical

∼200 HB

Cold Drawn / Cold Finished

150–180 HB

BKW Hot Finished

Ra 0.4–0.8µm

Honed Bore Surface

9ST52 DIN 2391 Hot Finished Pipe Equivalent Grades

Reliable ST52 Pipe Supplier in India with proper Material Equivalent charts for global grade comparison.

Germany

Germany / DIN

  • DIN 2391 St52
  • DIN 17100 St52.3
  • Material No. 1.0570
  • St52.0 (reference class)
Europe

Europe / EN

  • EN 10305-1 (precision tube)
  • S355J2H (structural tube grade)
  • EN 10210 S355J2H
  • Commonly cross-referenced to S355
Japan

Asia-Pacific

  • JIS STKM13A (comparable class)
  • GB/T Q345 (comparable class)
  • No exact AISI/SAE match
  • Cross-check chemistry before substitution

10UNS G41400 Cold Rolled Pipe Genuine Mill Brands We Stock Worldwide

Salzgitter Mannesmann

Salzgitter Mannesmann

Jindal

Jindal

ISMT

ISMT

Benteler Steel/Tube

Benteler Steel/Tube

Vallourec

Vallourec

Marcegaglia

Marcegaglia

Zeleziarne Podbrezova

Zeleziarne Podbrezova

11ST52 Pipe Vs ST37 Pipe

ST52 Pipe

  • Yield Strength: 355 N/mm²
  • Tensile Strength: 490–630 N/mm²
  • Elongation: ≥22%
  • Carbon Content: ≤0.22%
VS

ST37 Pipe

  • Yield Strength: 235 N/mm²
  • Tensile Strength: 340–470 N/mm²
  • Elongation: ≥25%
  • Carbon Content: ≤0.17%

Not Sure Which Bore Finish You Need?

Send your seal type, pressure rating and bore tolerance – we will recommend Honed, Skived or Plain ST52 Pipe.

Ask Our Engineer

12ST52 Tube Markings

ID

Identification Number

Dim

Specified Dimensions

DC

Delivery Condition

St#

Steel Number / Name

Cast

Cast Number

Mfr

Manufacturer’s Name / Trade Mark

EN

European Standard Number

13Applications Of ST52 0 Boiler Pipe

Preferred ST52 Pipe stockist in Mumbai catering to Application in automotive, construction, and hydraulic industries.

Hydraulic Cylinder Barrels

Piston Rods & Rams

Crane Booms & Telehandlers

Construction Equipment Frames

Agricultural Machinery

Structural Fabrication

Machine Tool Building

Automotive Chassis Parts

Regions We Deliver ST52 Pipe Regularly

Middle East ST52 Pipe Delivery Network
Turkey
Jordan
UAE
الله
Iraq
Oman
Saudi Arabia
Lebanon
Qatar
Also covers Syria • Yemen • Iraq • Turkey on request
MENA Region Coverage
Libya
Tripoli
Egypt
Cairo
Tunisia
Tunis
SCZone
Suez Canal
Algeria
Algiers
Morocco
Casablanca
North Africa & Levant — regular sea freight schedules
GCC Region Coverage
Bahrain
Kuwait
Saudi Arabia
Oman
UAE
Qatar
All 6 GCC member states covered — ex-stock & indent supply

141.0570 St52.3 Precision Seamless Pipe Manufacturing Process

1
Billet Prep

St52 billet is heated & cleaned

2
Piercing / Forming

Pierced seamless or roll-formed & welded

3
Drawing / Sizing

Sized to target OD & wall

4
Heat Treatment

Normalized or stress relieved

5
Straightening

Roller straightened to tolerance

6
Bore Finishing & Pack

Honed / skived, tested, cut & packed

Ready To Order ST52 Pipe?

Tell us bore finish, size and destination port – we quote FCL/LCL freight along with ex-works price.

Request Freight Quote

151.0570 St52.3 Rectangular Pipe Pressure Rating Chart

Established ST52 Pipe Exporter in India supplying pipes with accurate Pressure Ratings for high-load use.

ID
m/m
OD
m/m
Working
Pressure
kg/cm2
ID
m/m
OD
m/m
Working
Pressure
kg/cm2
ID
m/m
OD
m/m
Working
Pressure
kg/cm2
ID
m/m
OD
m/m
Working
Pressure
kg/cm2
63.5 76.2 210 25 35 416 150 175 173 100 120 208
63 76 215 18 31 751 150 168 125 100 115 156
63.5 76.2 210 25 35 416 150 175 173 100 120 208
63 80 280 20 30 520 150 170 140 100 116 166
65 85 320 35 45 297 160 178 117 101.6 118 160
65 75 160 30 40 346 150 180 210 100 125 260
70 85 238 40 46 156 160 190 195 110 120 95
65 80 240 32 42 325 160 172 78 100 130 312
75 85 138 40 50 260 170 190 125 110 130 189
70 80 148 38 50 330 160 180 135 105 120 150
76.2 88.9 170 45 60 346 177.8 215.9 220 120 135 130
70 90 297 40 48 208 165.1 190.5 160 110 125 142
80 95 195 50 58 166 180 202 127 125 137 100
75 95 270 45 55 231 177.8 203.2 150 120 132 104
82.55 98.4 200 50 70 416 200 232 166 125 152 224
80 90 130 50 57 145 180 196 92 120 140 173
100 109 94 60 80 346 300 350 173 140 170 225
82.55 95 160 50 65 312 200 216 83 125 145 166
100 110 104 63 71 132 350 420 208 150 160 70
85 101 203 55 65 189 203.2 228.5 130 130 142 96

16DIN2391 ST52 Seamless Round Pipe Processing

1
Hot Rolled

Billet pierced & rolled to hollow

2
Cold Rolled

Sized down to precision OD/wall

3
Forming

Round drawn to square, rectangular, custom

4
Drilling

Bore opened where deep-drilling is needed

5
Grinding & Machining

OD/ID brought to final finish

6
Cutting & Testing

Length cut, inspected, packed

ST52 Pipe Ready Stock Across Africa
🌎 Countries Kenya  Gabon  Ghana  Rwanda  Nigeria  Sudan  Chad  Cameroon  Togo  Republic of the Congo  South Africa  Niger  Equatorial Guinea  Benin  Congo  Ivory Coast  West Africa
Addis Ababa
Ethiopia
Durban
South Africa
Abuja
Nigeria
Nairobi
Kenya
Lagos
Nigeria
Cape Town
South Africa
Ogun
Nigeria
Johannesburg
South Africa

17DIN 17100 ST52.3 Cold Drawn Seamless Pipe Coatings

3LPE Coated Pipe

Liquid Epoxy (LE) Coated Pipe

FBE Coated Pipe

18EN 10305-1 ST52 Honed Pipe Bore Tolerance

Well-known ST52 Pipe stockist in Mumbai maintaining strict Tolerance limits as per international norms.

DIN Standard Dia (mm) Special High Precision GB Standard Prior Tolerance
WT +10% 0.5 -15 ±5%-8% 0.5-15 ±10%
Outer Diameter ±0.40mm 81-90 ±0.05mm ±0.40mm ±0.25mm
±0.45mm 91-100 ±0.05mm ±0.45mm ±0.35mm
±0.30mm 61-70 ±0.05mm ±0.30mm ±0.15mm
±0.35mm 71-80 ±0.05mm ±0.35mm ±0.20mm
±0.08mm 4-30 ±0.03mm ±0.10mm ±0.05mm
±0.25mm 51-60 ±0.03mm ±0.25mm ±0.10mm
±0.15mm 31-40 ±0.03mm ±0.15mm ±0.05mm
±0.20mm 41-50 ±0.03mm ±0.20mm ±0.08mm

Global DIN 17100 ST 52.3 Cold Drawn Seamless Pipe Stock Points & Supply Network

Aesteiron is a stocking distributor, stockholder and supplier of ST52 Pipe ex-stock in the following highlighted regions — not a reseller, a direct stock-holding partner.

Houston, USA Stocking Distributor

North America oilfield tube supply desk

Johannesburg, South Africa Stockist Hub

Southern Africa distribution centre

São Paulo, Brazil Stockist

South America industrial supply hub

Dubai, UAE Stockist Hub

Middle East distribution & re-export centre

Lagos, Nigeria Stocking Distributor

West Africa oilfield & engineering supply

Buenos Aires, Argentina Stock Holder

South America engineering tube stock

Addis Ababa, Ethiopia Distributor

East Africa engineering tube stockist

Casablanca & Tangier, Morocco Stockist

West Mediterranean port stocking

Yerevan, Armenia Distributor

Caucasus region supply point

Mexico City, Mexico Distributor

North & Central America supply link

Cairo, Egypt Stock Holder

North Africa engineering tube stock

Dakar, Senegal Stock Holder

West Africa coastal distribution point

Algiers, Algeria Distributor

Maghreb region supply network

Baku, Azerbaijan Distributor

Caspian & Caucasus stocking partner

Seychelles Supplier

Indian Ocean island supply route

19DIN 2391 ST52 Pipe Supply References

5″ ST52 Honed Tube – Excavator Boom Cylinders

5″ OD, honed bore Ra 0.6µm, EN 10204 3.1 MTC.

Construction Equipment OEM, UAE

DUBAI, UAE

8″ ST52 Welded Pipe – Structural Frames

8″ SCH 40, UT tested, third-party witnessed inspection.

Heavy Equipment Fabricator, South Africa

JOHANNESBURG, SOUTH AFRICA

3″ ST52 Seamless Pipe – Hydraulic Power Lines

3″ Cold drawn, hydrotested, EN 10204 3.2 certified.

Oilfield Services Contractor, USA

HOUSTON, TEXAS, USA

6″ ST52 Seamless Pipe – Oilfield Drilling Rig Structures

6″ SCH 80, cold drawn, EN 10204 3.1 MTC with UT & hydrotest.

Oil & Gas EPC Contractor, Saudi Arabia

JUBAIL, SAUDI ARABIA

4″ ST52 Honed Tube – Hydraulic Cylinder Manufacturing

4″ OD, honed bore Ra 0.4µm, chrome plating ready.

Hydraulic Cylinder Manufacturer, Nigeria

LAGOS, NIGERIA

10″ ST52 Welded Pipe – Structural Steel Fabrication

10″ SCH 40, UT tested, third-party witnessed inspection.

Structural Steel Fabricator, USA

TULSA, OKLAHOMA, USA

20ST52 Pipe FAQs

Is ST52 Pipe suitable for cold bending Applications?

Yes, ST52 Pipe offers good ductility, allowing it to be cold bent for structural and automotive Applications without compromising its mechanical strength.

How does Tolerance affect the selection of ST52 Pipe for hydraulic cylinders?

Tight Tolerance in OD and ID is critical for hydraulic cylinder applications, as it directly impacts seal performance, piston movement, and overall system efficiency.

Is ST52 Pipe compatible with other structural steel grades in fabrication work?

Yes, ST52 Pipe fabricates well with other structural grades, but Material Equivalent charts should be checked to match strength and weldability

How is ST52 Pipe priced — per kg or per piece?

ST52 Pipe is generally priced per kg based on weight, size, quantity and standard lengths.

What factors affect Pressure Ratings of ST52 Pipe in different Applications?

Pressure Ratings of ST52 Pipe depend on wall thickness, outer diameter, and Chemical Composition, so selecting the right Type ensures safe performance.

Conclusion

ST52 Pipe, referenced to DIN 2391 St52 / DIN 17100 St52.3 and available honed for direct cylinder assembly, is the right choice for hydraulic, structural and machine-building projects. Buyers across the Middle East, Africa and the Americas trust Aesteiron Steels LLP as one of the most responsive ST52 Pipe Suppliers for quick quotes.

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