• ISO 9001 Certified

    Seamac Piping Solutions Inc. is a reliable is a Manufacturer, Supplier, & Exporter of Pipe Fittings, Forged Pipe Fittings, Forged Fittings, Flanges, Outlets, Long Radius Bends from India.

    Corporate Address : 87, Durgadevi Street, Kumbharwada, Mumbai, Maharashtra(India) 400004

    Warehouse Address : Jai Matadi Industrial Estate , Gala No.3 , Goddev Fhatak Road Bhayander ( East) , Thane , Maharastra ( India).

    Mobile : +91-98332 92291
    Phone Nos. : +91-22-66159077 / 66159078
    E-mail : sales@seamacpiping.com

St52, St52.3, St52.4 Pipes Manufacturers, DIN 2391 ST 37 Welded Pipe Exporters, DIN 2391 St52 Steel Seamless Precision Pipe, ST37 Hydraulic Seamless Pipe, ST37.2 Pipe Suppliers in India.

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CS ST 37 / ST 52 Seamless Pipes

Seamac Piping Solutions Inc. is a highly acclaimed manufacturer of an extensive range of Carbon Steel ST 37/ ST 52 Pipes. We ensure to provide Carbon Steel ST 37/ ST 52 Pipes having excellent features and advantages like high strength, reliability, durability, and superior finish. These Pipes have low maintenance and efficient in performance. These pipes are available in different dimensions, sizes, and specifications to meet exact application requirements. We offer Carbon Steel ST 37/ ST 52 Pipes in customized thickness and sizes as per the specific demands of our esteemed clients.

Our professionals develop Carbon Steel ST 37/ ST 52 Pipes with superior quality raw materials concerning the national and international quality. We fabricate Carbon Steel Pipes at our well-equipped fabrication unit under the supervision of our qualified professionals. These Pipes can withstand high temperatures and pressure load applications. They are corrosion resistant having rust proof finish. We offer to customize these pipes according to the demands of our customers. We offer these Pipes with the perfect material according to the client’s requirements at the reasonable cost.

Seamac Piping Solutions Inc. carries a wide range of carbon steel st 37 / st 52 pipes and tubes in a variety of lengths, ODs, IDs, size and wall thicknesses to meet your project’s needs—including pipe in dimension as per ASTM and weight-kg. per mtr. (ASME/ANSI B36.10/19) / weight & thickness of st 37 / st 52 carbon steel seamless pipes gauge .

We design superior quality Carbon Steel ST 37/ ST 52 Pipes, which serves the demands and requirements of various industrial applications. We ensure to update and maintain our equipment regularly so that we can serve the quality products to our valued clients. We offer high-grade Carbon Steel ST 37/ ST 52 Pipes at reasonable and standard industry prices. These pipes have advantages like robust construction, reliable performance, and longer service life. We carry out all types of tests for our products under the inspection of our quality experts. We follow all the national and international quality standards to make sure the long service life of the products.

ST37 | ST52 Carbon Steel Pipe Specifications

Pipe Standard : DIN2391

Grade : ST 35 , ST 37.4 , ST 45 & ST 52

Outside Diameter Ranges : 1/8’’~48’’ Or DN6~DN1200 Or 10.3mm~1219mm

I.D Roughness : 0.4-0.8

Inside Diameter Tolerance : H7-H10

Form : Round, Square, Rectangular, Hydraulic Etc

Size : 1/2” NB to 36” NB

Outside Diameter : 13.72mm-914.4mm

Wall Thickness : 1.25mm-50mm

Length : Single Random Length | 16ft-22ft/4.8m-6.7m
Double Random Length | 22ft-35ft/6.7m-10.7m
Fixed Length | 16ft-41ft/4.8m-12.5m
common Length | 6m, 12m
Min 3 Meters, Max18 Meters, or according to customer’s requirement

Schedules : SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules

End : Plain End, Beveled End, Treaded

End Protection : Plastic Caps

Type : Seamless / Welded / American Welded / Fabricated / ERW

Specialized in : Large Diameter ST 52 ST37 Pipe, din st 52, st 37 welded steel pipe, DIN 2391 St 37 St 52 Honed Tube for Hydraulic Cylinder and Pneumatic Cylinder

ST37 | ST52 Carbon Steel Pipe Equivalent Grades

Grade EN BS NFA 49.210/49.112 ASTM
St 37 EN 10216.1Grade P235 T1 Grade TU 37 B TU E 220 A ASTM A53 Gr B
St 52 EN 10216-3Grade P355N NFA Grade P355N ASME SA 381 Grade Y 52

We fabricate premium quality Carbon Steel ST 37/ ST 52 Pipes which are suitable for industries such as, high pressure applications, Paper & Pulp Companies, Chemical Refinery, Oil and Gas Industry, High Temperature Application, Pipeline, Water Pipe Line, Food Processing Industries, Nuclear Power Plants, Boiler and Heat Exchangers etc. We offer numerous ways of packaging and shipping to deliver the products to the customer’s locations safely.


ST37 | ST52 Steel Seamless Pipe Types

ST 37 / ST 52 Seamless Pipes

Cold Drawn St37 St52 Steel Seamless Pipes

St37 St52 CS Cold Drawn Seamless Pipe

ST 37 Seamless Carbon Steel Pipe

ST 52 Seamless Steel Pipe

ST 37 / ST 52 CS Welded Pipes

DIN 2391 ST 37 Carbon Steel Welded Pipe

DIN 2391 ST 52 Welded Pipe

Carbon Steel ST37 Welded Pipe

ST 52 Carbon Steel Welded Pipe

ST 37 / ST 52 Seamless Precision Pipe

DIN2391 EN10305 carbon steel St37 precision pipe

ST 52 High Precision Seamless Pipe

DIN 2391 ST37 Carbon Steel Precision Pipe

DIN 2391 ST52 Precision Pipe

ST 37 / ST 52 Hydraulic Line Pipes

ST 37 Honed Hydraulic Steel Pipes

Carbon Steel ST 52 Hydraulic Pipes

DIN 2391 ST37 CS Seamless Hydraulic Pipes

ST52 Hydraulic Cylinder Pipes

Carbon Steel ST 37 | ST 52 Seamless Pipes & Tubes Dimensions:

All Pipes is manufactured and tested / inspected to the relevant standards including ASTM, ASME and API etc.

Pipe/Tube NB Sizes Sch 5 Sch 10 Sch 40 Sch 80 Sch 160
ST 37 Seamless Pipes 1/8″
ST 52 Seamless Pipes 1/4″
ST 37 | ST 52 Pipes 3/8″
ST 37 | ST 52 Steel Pipes 1/2″
ST 37 | ST 52 Seamless Pipes 3/4″
Carbon Steel ST 37 | ST 52 Pipes 1″
ST 37 | ST 52 Pipes 1 1/4″
ST 37 | ST 52 Pipes 1 1/2″
ST 37 | ST 52 Seamless Pipes 2″
ST 37 | ST 52 Pipes 2 1/2″
ST 37 | ST 52 Pipes 3″
ST 37 | ST 52 Pipes 4″
ST 37 | ST 52 Pipes 5″
Carbon Steel ST 37 | ST 52 Pipes 6″

Carbon Steel ST 37 | ST 52 Pipe Chemical Composition

Steel Grade C Si Mn P S
St37 ≤0.17 - - ≤0.035 ≤0.035
St52.0 ≤0.22 ≤0.55 ≤1.60 ≤0.035 ≤0.035

ST 37 | ST 52 Seamless Carbon Steel Pipe Pressure Rating

Maximum Allowable Pressure (psi)
NPSOutside DiameterSchedule
(in)(in)102030STD4060XS80100120140160XXS
1/40.54798579851079810798
3/80.6756606660691479147
1/20.8463586358857585751090817150
3/41.0552735273718771871022014373
11.3154956495666706670931613340
1 1/41.664133413356385638738011276
1 1/21.93739373951585158724710316
22.375317731774498449870978995
2 1/22.875346034604704470463919408
33.5302430244200420061328400
3 1/242769276938963896
44.52581258136703670476957827339
55.5632273227333033303440455056606
66.6252071207131953195415753186390
88.625142015741829182923072841284133754085461351474971
1010.75114013991664166422792279270832773847455851284558
1212.7596112681441156021601922264432443843432450423843
141487510921313131315332079175026253283382943754921
16167669561148114815312009153125853157373344044882
18186818491192102115302042136125533147374342524848
2020613919122591914551989122525263138367542884824
222255783511148351949111425063063361941764733
2424510766114776614051978102124893126370042104786
30305108171021613817
32324787669575741054
3434450721901540992
36364256818515101021
4242583729438875
  • 1 in (inch) = 25.4 mm
  • 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895x10-2 bar

Carbon Steel ST 37 / ST 52 Pipes Mechanical Properties

Steel Grade Tensile strengtd(Mpa) Yield point(Mpa) Elongation(%)L Elongation(%)T
St37 350-480 ≥235 ≥25 ≥23
St52.0 500-650 ≥355 ≥21 ≥19
Application Industries

DIN 2391 ST37, ST52 Seamless Pipe Application Industries

  • Textile machinery
  • Oil and gas industry
  • Pulp and paper industry
  • Power plants
  • Energy industries
  • Furniture
  • Pharmaceutical processing industry
  • Modern architecture
  • Home appliances
  • Water waste projects
  • Synthetic fiber
  • Heat exchanger
  • Fluid piping
  • Dairy and food processing

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