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Dawei Steel Co., Ltd.

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SS316L AP Seamless Stainless Steel Pipe | Annealed & Pickled Corrosion Resistant Steel Tube Supplier

    SS316L AP seamless stainless steel pipe is manufactured from high-quality 316L stainless steel and processed with annealing and pickling (AP) treatment. This results in a clean, oxide-free surface with excellent corrosion resistance and mechanical properties. It is ideal for demanding industries such as chemical processing, marine engineering, oil & gas, and food or pharmaceutical applications.


Overview of the light removal tower

Product Overview

SS316L AP seamless stainless steel pipe is manufactured from high-quality 316L stainless steel and processed with annealing and pickling (AP) treatment. This results in a clean, oxide-free surface with excellent corrosion resistance and mechanical properties. It is ideal for demanding industries such as chemical processing, marine engineering, oil & gas, and food or pharmaceutical applications.


Product Advantages

🛡️ Excellent corrosion resistance (chloride and pitting resistance)

⚙️ Low carbon 316L reduces intergranular corrosion

✨ AP surface: clean, smooth, oxide-free

🔥 Good high-temperature performance

🔧 Excellent weldability and machinability

⏳ Long service life with low maintenance


Why Choose SS316L AP Seamless Pipe

For applications requiring high corrosion resistance, cleanliness, and reliability, SS316L AP pipe is the ideal solution:

Superior resistance in aggressive environments (marine, acidic)

Clean surface suitable for high-standard industries

Reliable for critical fluid transport systems

Reduced maintenance and longer service life


Technical Specifications

  Item

  Details

  Material

  SS316L (UNS S31603)

  Standards

  ASTM A312 / A213 / A269

  Type

  Seamless

  Surface

  AP (Annealed & Pickled)

  Outer Diameter

  6mm – 630mm

  Wall Thickness

 1mm – 40mm

  Length

  6m / 12m / custom

  Condition

  Annealed

  Tensile Strength

  ≥ 485 MPa

  Yield Strength

  ≥ 170 MPa

  Elongation

  ≥ 35%

  Inspection

  hydrostatic test, ultrasonic test, eddy current test


(Custom sizes and processing services available)


Applications

🌊 Marine engineering & seawater systems

🧪 Chemical and petrochemical pipelines

💊 Pharmaceutical and food-grade piping

🔥 Boilers and heat exchangers

🏭 Industrial fluid transport systems


📌 FAQ

Q1: What does AP surface mean?

A: AP stands for Annealed & Pickled, meaning the pipe is heat-treated and acid-cleaned for a smooth, oxide-free surface.

Q2: What is the difference between 316 and 316L?

A: 316L has lower carbon content, offering better weldability and resistance to intergranular corrosion.

Q3: Seamless vs welded pipe?

A: Seamless pipes have higher strength and pressure resistance.

Q4: Do you support customization?

A: Yes, OD, wall thickness, length, and surface can be customized.


🚀 Call to Action

👉 Get the latest price for SS316L seamless pipe

👉 Send your requirements for a quote within 24 hours

👉 Samples and worldwide shipping available


Why Choose Us

✅ 10+ years of stainless steel pipe manufacturing & export

✅ Strict quality inspection system

✅ Full certifications (ASTM / EN / ISO)

✅ Wide stock sizes for fast delivery

✅ Custom processing for project needs

✅ Professional technical support



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