ST42 Carbon Steel Pipe

1. Low MOQ and Flexible Production Ability.
2. Quick delivery and standard industry exporting package.
3. Best service with 24 hour`s reply
4.Support payment with T/T,L/C , paypal, kunlun bank, 100% LC ,etc.
5. OEM and ODM, welcome customers to visit our factory for better understanding;
6. Approved by ISO9001, CE, third party inspection such as SGS BV is welcomed;
7. Our factory provide steel products with competitive price and reliable quality (Shandong and Jiangsu);
8. Value friendship and trustworthy, devote to provide long-term service to our distinguished customers.

Phone :+86 18915372544
+86 18915372544
Email :


For Our Customers:

  • Customer service provided at Trio Steel is of the highest standard.
  • Material used in pipe production is of high quality.
  • Equipment is updated and regularly maintained.
  • You will get exactly what you need and when you need it.
  • Cost effective and high quality ST 42 Pipes & Tubes is supplied.

ST 42 Pipes & Tubes

Trio Steel is a stockholder & distributor of ST 42 Pipes & Tubes for Atmospheric and Low Temperatures in Grade CB60, Grade CB65, Grade CB70, Grade CC60, Grade CC65, Grade CC70

  • ST 42-3 Seamless Pipes, Tubes ST 42-3 Seamless Hydraulic Pipes, Tubes
  • ST 42.0 / ST37.0 DIN 1629 / DIN 2448 HFS – Hot Finished Seamless Mechanical Tubes
  • ST 42.3 / ST42.3N DIN 17121 / DIN 2448 Hot Finished Seamless Tubes & Pipes
  • ST 42 DIN 2391 Seamless Tubes for Hydraulic Cylinder
  • St 42.0 DIN 2391 Seamless Tubes for Hydraulic Cylinder
  • ST 42 DIN2391 PART 1 Grade A, B, C in Condition BK, BK S, BKW, GBK, NBK
  • ST 42-3 JIS-G-3445

TypeCarbon Steel Pipe
SizeOuter DiameterSeamless:17-914mm 3/8"-36"
LSAW 457-1422mm 18"-56"
Wall Thickness2-60mm SCH10 SCH20 SCH30 STD SCH40 SCH60 XS SCH80SCH100 SCH120 SCH140 SCH160 XXS
LengthSingle random length/Double random length
5m-14m,5.8m,6m,10m-12m,12m or as customer's actual request
EndsPlain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc.
Surface TreatmentBare,Painting black,varnished,galvanized,anti-corrosion 3PE PP/EP/FBE coating
Technical MethodsHot-rolled/Cold-drawn/Hot-expanded
Testing MethodsPressure test,Flaw detection,Eddy current testing, Hydrostatic testing or Ultrasonic examination and also with chemical and physical property inspection
PackagingSmall pipes in bundles with strong steel strips,large pieces in loose; Covered with plastic woven bags; Wooden cases;Suitable for lifting operation;Loaded in 20ft 40ft or 45ft container or in bulk;Also accrdin to customer's requests
ApplicationConveying oil gas and water
Third Party InspectionSGS BV MTC
Trade TermsFOB CIF CFR
Supply Capacity5000 T/M
Delivery TimeUsually within 30-45 days after receipt of advance payment


SpecificationWall thicknessSpecificationWall thickness

ASTM Standards

  • A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels
  • A370 Test Methods and Definitions for Mechanical Testing of Steel Products
  • A435/A435M Specification for Straight-Beam Ultrasonic Examination of Steel Plates
  • A530/A530M Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe
  • A577/A577M Specification for Ultrasonic Angle-Beam Examination of Steel Plates
  • A578/A578M Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications
  • E110 Test Method for Indentation Hardness of Metallic Materials by Portable Hardness Testers
  • E165 Practice for Liquid Penetrant Examination for General Industry
  • E709 Guide for Magnetic Particle Testing
  • Boilers And Pressure Vessels – Electric Fusion Welding – Electrofusion – Heat Treatment – High-Pressure Services – Pressure Vessels – Steel Pipes – Tubular Products

ST 42 Pipes & Tubes Application

Steel, where the main alloying constituent is carbon, is called Carbon Steel or plain carbon steel. The American Iron and Steel Institute (AISI) defines carbon steel as: “Steel is considered to be carbon steel when no minimum content is specified or required for chromium, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium or zirconium, or any other element to be added to obtain a desired alloying effect; when the specified minimum for copper does not exceed 0.40 percent; or when the maximum content specified for any of the following elements does not exceed the percentages noted: manganese 1.65, silicon 0.60, copper 0.60.”
This type of steel is applied in various industries and for critical engineering purposes. Other value added products of carbon steel include LPG cylinders, corrosion resistant steel, precision tubes and medium/high carbon grades, critical structural application steel, etc.

Company Advantages



* Start to manufacturre door handles since 1997, being pioneer in the innovation of technology, we are always in the first place
* 18 years exporting services experience, we can ensure everything goes well
* Advanced pipe making machine & exported testing machine
* Factory price but with excellent quality
* Offer OEM/ODM service








Why Choose Us?


1. who are we?
We are based in Shandong, China, sell to Domestic Market and Abroad Market. There are total about 51-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment;

3.what can you buy from us?
stainless steel plate,stainless steel coil,stainless steel sheet,stainless steel pipe and tube,sainless steel bar and other metal.

4. why should you buy from us not from other suppliers?
Runs perennial exports of quality assured steel mills ,including Shanxi TISCO, Baosteel, Shanghai Krupp, Ningbo Baoxin, Guangzhou Lianzhong, Zhangjiagang Pohang, Qingdao Pohang, Sweden AvestaPolarit, Finland OUTKUMPU, Spain Acerinox, South Africa Columbus