ASTM A36 A53 A192 Q235 Q235B 1045 4130 1020 Sch40 Black 5L Gr. B Sch40s Gradeb Seamless Stainless Coated Carbon Steel Pipe Tube

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Product Description

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Basic Information

Model NO.10-400mm
TypeSeamless
TechniqueHot Rolled
MaterialCarbon Steel
Surface TreatmentBlack
UsagePipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration
Section ShapeRound
Product NameSeamless Steel Tube
Delivery Time7-21 Days
Production Capacity20000 tons
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Product Description

Diameter: 25-600 mm | Wall Thickness: 2-100 mm | Tolerance: ±0.3 mm

Complies with global standards like GB/T 8162, ASTM A106, and EN 10216-1 for various pressure applications. We provide precision quality as a reliable backbone for worldwide engineering projects.

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Specifications

Product NameHot rolled seamless carbon tube/alloy steel pipe/steel tube
StandardsASTM A106, A53, A179, A210, ANSI B36.10, GB 5310, GB6479, GB9948, GB/T17396, GB 3087, GB/T 8162, GB/T8163
Outer Diameter25-1200mm (Customizable)
Wall Thickness1-50mm (Customizable)
Length6m, 12m or as per customer's requirements
Material GradesA53(A,B), A106(A,B), Q345, 16Mn, 10#, 20#, 45#, S235JR, ST37, ST52, X42-X70, 4140, 4130, 35CrMo, 42CrMo, etc.
CertificatesISO9001; SGS; CE
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Core Product Features

  • High Precision: Manufactured with cold-drawn/hot-rolled technology; smooth surfaces and tight dimensional tolerances.
  • High Pressure Resistance: One-piece seamless structure with no weld defects, leak-proof under extreme conditions.
  • Wide Compatibility: Available in carbon, alloy, and stainless steel ranging from thin-walled to large-diameter tubes.
  • Long Service Life: Excellent fatigue and corrosion resistance, extending service life by over 30%.
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Main Applications

Energy Engineering: Oil & Gas drill pipes, shale gas pipelines, and power plant boiler tubes.

Industrial & Infrastructure: Hydraulic cylinders, automotive drive shafts, and high-rise structural columns.

Special Environments: Chemical reactors, pharmaceutical sanitary tubes, and offshore marine engineering.

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Manufacturing Excellence

Specializing in hot-rolled, precision, and cold-drawn seamless steel pipes, including bearing steel and special-shaped tubes. Our facilities hold CE and QES (ISO) certifications to ensure industrial leadership.

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Frequently Asked Questions

Q1 What is the minimum order quantity (MOQ) for seamless pipes?
For standard seamless steel pipes, the MOQ is 1 ton for trial orders and 5 tons for formal bulk orders. Non-standard sizes can be adjusted based on production conditions.
Q2 What is the typical production lead time?
Standard pipes take 7-12 working days. Customized orders involving special heat treatment or surface coatings typically require 15-25 working days.
Q3 Can you provide customized processing like cutting or chamfering?
Yes, we offer fixed-length cutting, double-end chamfering, bending, drilling, galvanizing, and bright annealing based on your technical drawings.
Q4 What quality standards do your products meet?
Our products strictly comply with ASTM A519, DIN 2391, EN 10305, and GB/T 3639. Every batch comes with a Material Certification (MTC).
Q5 How do you handle quality concerns after delivery?
If issues are found within the warranty period, we respond within 12 hours. Solutions include free return, replacement, or compensation based on the problem description.
Q6 Do you offer international shipping and customs support?
Yes, we provide one-stop logistics support and global compliance documentation (CE, ISO, REACH) to ensure smooth customs clearance in all major regions.

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