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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 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
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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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