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Stainless Steel Seamless Pipe
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Thick Wall Stainless Steel Seamless Pipe

Thick Wall Stainless Steel Seamless Pipe

Thick Wall Stainless Steel Seamless Pipe is a heavy-duty pipe designed with increased wall thickness to provide superior strength and pressure resistance. It is widely used in high-pressure systems, oil and gas pipelines, mechanical equipment, and heavy industrial applications.

  • Material Type :

    Stainless Steel
  • Outer Diameter Range :

    25mm – 630mm
  • Wall Thickness Range :

    9mm – 50mm
  • Customizable :

    Yes
  • Order(MOQ) :

    2T

Specifications

 

Thick wall stainless steel seamless pipes are manufactured through seamless production processes, ensuring a uniform structure without weld seams. The increased wall thickness significantly enhances the pipe’s ability to withstand high pressure, heavy loads, and demanding operating conditions.

 

These pipes are typically made from high-quality stainless steel grades such as 304, 316, and alloy stainless steels, offering excellent corrosion resistance, high-temperature performance, and long-term durability in harsh environments.

 

Thick wall stainless steel seamless pipes are widely used in oil and gas transmission, chemical processing equipment, boilers, pressure vessels, and heavy machinery, where strong mechanical performance, high pressure resistance, and long service life are essential.

 

Thick Wall Stainless Steel Seamless Pipe is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).

 

Grade Grade Equivalent Mechanical Properties Size Range Chemical Composition (Typical, %)
TP304 UNS S30400
 
EN 1.4301
Tensile ≥515 MPa
 
Yield ≥205 MPa
 
Elongation ≥40%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.08, Cr 18.0–20.0
 
Ni 8.0–11.0, Mn≤2.0
TP304L UNS S30403
 
EN 1.4306
Tensile ≥485 MPa
 
Yield ≥170 MPa
 
Elongation ≥40%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.03, Cr 18.0–20.0
 
Ni 8.0–12.0, Mn≤2.0
TP316 UNS S31600
 
EN 1.4401
Tensile ≥515 MPa
 
Yield ≥205 MPa
 
Elongation ≥40%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.08, Cr 16.0–18.5
 
Ni 10.0–14.0, Mo 2.0–3.0
TP316L UNS S31603
 
EN 1.4404
Tensile ≥485 MPa
 
Yield ≥170 MPa
 
Elongation ≥40%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.03, Cr 16.0–18.5
 
Ni 10.0–14.0, Mo 2.0–3.0
TP321 UNS S32100
 
EN 1.4541
Tensile ≥515 MPa
 
Yield ≥205 MPa
 
Elongation ≥40%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.08, Cr 17.0–19.0
 
Ni 9.0–12.0, Ti≥5×C%
TP347H UNS S34709
 
EN 1.4550
Tensile ≥515 MPa
 
Yield ≥205 MPa
 
Elongation ≥35%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.08, Cr 17.0–20.0
 
Ni 9.0–13.0, Nb≥10×C%
TP310S UNS S31008
 
EN 1.4845
Tensile ≥515 MPa
 
Yield ≥205 MPa
 
Elongation ≥35%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.08, Cr 24.0–26.0
 
Ni 19.0–22.0
2205 Duplex UNS S32205
 
EN 1.4462
Tensile ≥655 MPa
 
Yield ≥450 MPa
 
Elongation ≥25%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.03, Cr 22.0–23.0
 
Ni 5.0–6.5, Mo 3.0–3.5
2507 Super Duplex UNS S32750
 
EN 1.4410
Tensile ≥800 MPa
 
Yield ≥550 MPa
 
Elongation ≥15%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.03, Cr 24.0–26.0
 
Ni 6.0–8.0, Mo 3.0–5.0
904L UNS N08904
 
EN 1.4539
Tensile ≥490 MPa
 
Yield ≥220 MPa
 
Elongation ≥35%
OD 25–630 mm
 
WT 8–60 mm
 
Length 6–12 m
C≤0.02, Cr 19.0–23.0
 
Ni 23.0–28.0, Mo 4.0–5.0

Note: If you do not find a Thick Wall Stainless Steel Seamless Pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan.

 

Video

 

 

Factory

  • Thick Wall Stainless Steel Seamless Pipe
  • Thick Wall Stainless Steel Seamless Pipe
  • Thick Wall Stainless Steel Seamless Pipe
  • Thick Wall Stainless Steel Seamless Pipe
  • Thick Wall Stainless Steel Seamless Pipe
  • Thick Wall Stainless Steel Seamless Pipe
  •  

FAQs

Q: What types and standards of stainless steel do you mainly supply?

A: We mainly supply a wide range of stainless steel products including stainless steel pipes/tubes (seamless and welded), plates, coils, strips, and bars. Common grades include 304/L, 316/L, 321, 310, 410, 430, 2205 (Duplex), and 904L, which are widely used in construction, chemical processing, food equipment, and marine engineering. All stainless steel products comply with international standards such as ASTM, JIS, and EN. We can also provide corresponding material test certificates (MTC) and support customized specifications according to customer project requirements.

 

Q: Can you provide special specifications or non-standard customization? For example, extra-wide plates or pipes with specific wall thicknesses?

A: Of course. One of our advantages is our flexible customization capabilities. We can provide customized size cutting, special thicknesses, and special surface treatments (such as 2B, BA, No.4 brushed finish, mirror finish) based on your drawings or requirements. Whether it's a small trial order or a large-volume purchase, we can meet your needs.

 

Q: How do you guarantee the quality and consistency of materials? Do you have quality certifications?

A: Quality is our lifeline. We use direct supply from large steel mills to ensure material traceability. Each shipment comes with a Material Quality Certificate (MTC). We have our own quality control team that conducts random checks on material composition, dimensional tolerances, surface finish, and mechanical properties. Our factory is also ISO 9001:2015 quality management system certified.

 

Q: What are your delivery times and logistics solutions for overseas customers?

A: For standard-specification in-stock products, we can complete preparation and shipment within 7-14 days. Delivery times for customized products will be determined through negotiation based on the specific process. We have established international logistics partners who can arrange full container load (FCL), less-than-container load (LCL), or air freight according to your needs, and provide various trade terms such as EXW, FOB, CIF, and DDP, with door-to-door service.

 

Q: As a new customer, how do I begin cooperation? Can you provide samples for testing? 

A: The cooperation process is very smooth: 1) You provide specific requirements (brand, specifications, quantity, standards); 2) We provide a quotation and technical advice; 3) After confirmation, we arrange the contract and payment; 4) Production/pickup and quality inspection; 5) Shipment and provision of documentation. We encourage sample testing. For serious customers, we can provide small-size samples to ensure that the materials fully meet your processing and application requirements.

 

Note: If you do not find a Thick Wall Stainless Steel Seamless Pipe that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan.0

 

  • Why Choose Us
    Why Choose Us
    Over 20 years of experience in steel manufacturing, offering a comprehensive product range and one-stop supply solutions. Committed to long-term cooperation and reliable service for global partners.
  • Production & Quality Control
    Production & Quality Control
    Stable production capacity supported by an experienced technical team. Strict quality management with ISO-compliant inspections and optional third-party testing (SGS, TÜV, CE).
  • Packing & Shipping
    Packing & Shipping
    Flexible and secure packaging tailored to product type and customer requirements. Fast and reliable delivery with standard stock in 2 weeks and custom orders scheduled per specifications.
  • Certificate & Compliance
    Certificate & Compliance
    ISO9001 certified with full support for international standards. We provide material certificates (MTC) and third-party inspections to ensure compliance and customer confidence.

 

 

 

Request A Quote
For inquiries about our steel products, please submit your contact details. Our experts will respond promptly with solutions and support.

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