About Us
Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
News
In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
Services
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Facility
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
ST52 seamless steel pipe is a long strip of steel with a hollow section and no joints around it. It is widely used as a pipeline for transporting fluids, such as pipelines for transporting oil, natural gas, gas, water and certain solid materials.
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DIN 2391 ST52 Pipe |
DIN 2391 ST52 Seamless Pipe |
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DIN 2391 ST 52 Seamless Pipes |
DIN 2391 ST 52 Square Pipes |
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DIN 2391 ST 52 Seamless Piping |
DIN 2391 ST 52 Round Pipes |
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DIN 2391 ST 52 Welded Pipes |
2391 ST 52 Seamless Pipes |
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DIN 2391 ST 52 Rectangular Pipes |
DIN 2391 ST 52 Welded Pipes |
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Carbon Steel DIN 2391 ST52 Pipe |
Carbon Steel DIN 2391 ST52 Tube |
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DIN 2391 ST52 Pipes |
DIN 2391 ST52 High Precision Seamless Tube |
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DIN 2391 ST52 Seamless Pipe supplier |
DIN 2391 ST52 Thick Wall High Precision Steel Tube |
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DIN 2391 ST52 Cold Drawn Carbon Seamless Steel Pipe |
DIN 2391 ST52 Steel Tube |
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DIN 2391 Seamless Steel Precision Pipe |
DIN 2391 ST52 Steel Pipes |
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High Quality DIN 2391 ST52 Pipes |
ST52 Round Pipes |
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DIN2391 Thin Wall Carbon Seamless Precision Steel Tube |
DIN 2391 ST52 Cold Drawn Carbon Steel Pipe |
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EN 10305 E235 Precision Seamless Steel Tube |
DIN 2391 EN 10305 Pipes |
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ST 52 Welded Pipes |
SCH 40 DIN Pipes |
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ST 52 Welded Hydraulic Pipes |
Schedule 60 Carbon Steel Pipe |
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ST 52 Pipe Standard |
DIN2391 |
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Grade |
St35/St45/St52/ St55 and so on |
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Minimum Order Quantity |
1 Ton |
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Outside Diameter Ranges |
1/8’’~48’’ Or DN6~DN1200 Or 10.3mm~1219mm |
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ST 52 Pipe Wall Thickness Ranges |
SCH10~SCH160 Or STD,XS,XXS Or 1.73mm~59.54mm |
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ST 52 Pipe Length (Custom) |
Single Random Length |
16ft-22ft/4.8m-6.7m |
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Double Random Length |
22ft-35ft/6.7m-10.7m |
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Fixed Length |
16ft-41ft/4.8m-12.5m |
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Most common Length |
6m, 12m |
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I.D Roughness |
0.4-0.8 |
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Inside Diameter Tolerance |
H7-H10 |
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ST 52 Pipe Type |
Seamless, Welded |
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ST 52 Pipe Technique |
Cold Drawn, ERW and so on |
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ST 52 Pipe Schedules |
SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules |
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ST 52 Pipe Origin |
European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material) |
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Tolerance |
Cold drawn pipe: +/-0.1mm Cold rolled pipe: +/-0.05mm |
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Craft |
Cold rolled and Cold drawn |
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Type |
Seamless / ERW / Welded / Fabricated |
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Form |
Round, Hydraulic Etc |
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Length |
Min 3 Meters, Max18 Meters, or according to customer’s requirement |
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End |
Plain End, Beveled End, Treaded |
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Specialized in |
Large Diameter ST 52 Pipe, din st 52 welded steel tubes, DIN 2391 St 52 Honed Tube for Hydraulic Cylinder and Pneumatic Cylinder |
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Additional Testing |
NACE MR0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc. |
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C |
Si |
P |
S |
Mn |
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≤0.20 |
≤0.55 |
0.035 |
0.035 |
≤1.50 |
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Grade |
Thickness |
Yield |
Tensilmie |
Elongation |
Impact Energy(KV J) min |
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St 52 |
mm |
Min Mpa |
Mpa |
Min % |
-20° |
0° |
+20° |
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≤ 16 |
355 |
490-630 |
22 |
40 |
47 |
55 |
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16> to ≤35 |
355 |
490-630 |
22 |
40 |
47 |
55 |
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35> to ≤50 |
345 |
490-630 |
22 |
40 |
47 |
55 |
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50> to ≤70 |
325 |
490-630 |
22 |
40 |
47 |
55 |
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70> to ≤100 |
315 |
470-610 |
21 |
40 |
47 |
55 |
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100> to ≤150 |
295 |
450-590 |
21 |
40 |
47 |
55 |
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The production process of cold-rolled ST52 seamless steel pipe is: round tube blank → heating → piercing → heading → annealing → pickling → oiling → multi-pass cold drawing → blank tube → heat treatment → straightening → hydraulic test → marking → entering Library
Size: OD (4-190mm) x WT (0.5-15mm)
Outer Dimensions: 4.0mm – 60.0mm
Wall Thickness: 0.5mm – 8 mm
Length: max 6000mm
Standard: DIN 2391
Grade: ST52
Pressure-bearing components, hydraulic cylinders, drive shafts, etc., used in heavy machinery; their high strength and wear resistance make them suitable for withstanding dynamic loads.
Suitable for steel structures in high-rise buildings, bridge support components, etc., especially excelling in scenarios requiring wind load and seismic resistance.
Oil/gas pipelines, boiler supports, pressure vessels (subject to additional standards); resistant to moderate corrosion and high-pressure environments.
Automobile chassis components, crane booms, railway freight car frames, etc., balancing lightweight and high strength requirements.
Heavy equipment such as mining equipment (e.g., hydraulic props), port machinery, and agricultural machinery.
E-mail: sales@eastern-steels.com
