Technical Specifications

• Material Grade: ASTM A106 (Grades A, B, C), ASTM A53 (Grade A/B), API 5L (Grades B, X42–X80), ASTM A335 (alloy steel grades P1–P91), A36, S235, S355, 4130, 4140, 4340, A106 Gr.A/B, A333, A500, St52, AH36, 1020, 1018, 1010, S275JR, A53, 1045, SS400, etc.

• Manufacturing Process: Hot Rolled Seamless (HRS), Cold Drawn Seamless (CDS)

• Size Range:

  • Outside Diameter (OD): 1/4" – 36" (6mm – 914mm)

  • Wall Thickness: SCH10 – SCH160, XXS, or 1.5mm – 60mm

  • Length: 5.8m, 6m, 12m, or custom lengths

• Surface Treatment: Black varnish, anti-rust oil, galvanized, phosphate coating

• End Finish: Plain end, beveled end, threaded with coupling

• Standards Compliance: ASTM, API, EN, DIN, JIS

Mechanical & Performance Properties

• Tensile Strength: 415–655 MPa (depending on grade)

• Yield Strength: ≥ 240 MPa for standard grades, up to 415 MPa for high-grade alloy seamless pipes

• Elongation: ≥ 20% (varies by standard)

• Hardness: Typically ≤ 90 HRB, can be heat-treated for higher hardness

• Pressure Resistance: Superior to welded pipe due to absence of weld seam; capable of ultra-high pressure service

• Temperature Range: -70°C to 600°C (material-dependent)

• Impact Resistance: Excellent performance in both high and low temperatures

• Corrosion Resistance: Enhanced with surface coating or alloying elements

• Testing: Hydrostatic testing, Ultrasonic testing (UT), Eddy current testing, Magnetic particle inspection (MPI)

• Service Life: 30–60 years under normal service conditions

Production Process

Seamless pipes & tubes (Mannesmann process)

Seamless pipe pipes & tubes (hot extrusion ･ hot hollow forged)

Product Real Shot

Packaging and Shipping

Applications & Advantages

Applications:

1. Oil & Gas Industry: High-pressure pipelines, casing, and tubing for drilling operations.

2. Power Generation: Superheater tubes, boiler tubes, and heat exchanger tubes in thermal power plants.

3. Chemical & Petrochemical Plants: Conveying corrosive liquids and gases under high temperatures.

4. Automotive Industry: Drive shafts, chassis parts, and precision-machined components.

5. Engineering & Construction: Hydraulic systems, structural frameworks, and offshore platforms.

Advantages:

• No weld seam, eliminating weak points in the pipe structure

• Higher strength and better pressure tolerance than welded alternatives

• Excellent dimensional accuracy and uniform wall thickness in cold-drawn pipes

• Suitable for extreme temperatures and aggressive environments

• Long service life with minimal maintenance requirements

• Versatile across industries due to broad size and grade availability

FAQ

Q1: What product information must I provide before making a purchase?
A: Please provide the grade, width, thickness, surface treatment requirements, and the quantities you need.

Q2: What about product pricing information?
A: Prices may vary due to fluctuations in raw material costs.

Q3: Is it possible to send samples?
A: Yes, we offer free samples with express shipping worldwide.

Q4: Do you offer a service for customized products?
A: Yes, we can supply according to your specific requirements.

Q5: Can I visit you in person?
A: Customers from all over the world are welcome to meet with us.

Q6: Can you assist me in importing steel products for the first time?
A: Yes, we can provide support through our experienced shipping agents.