Introduction
The ASME SA213 TP316L Seamless Tube is a low-carbon austenitic stainless steel tube widely used in heat exchangers, condensers, and boilers. Known for its molybdenum-enhanced corrosion resistance and excellent weldability, TP316L is a preferred choice for industries exposed to chlorides, seawater, and aggressive chemical media.
DLSS supplies 19.05 mm OD × 2.11 mm wall thickness seamless tubes, manufactured to ASME SA213 standards, with 100% heat treatment (HT) and 100% eddy current testing (ET) to guarantee mechanical strength and defect-free integrity.
Key Features
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Material: Stainless Steel TP316L (UNS S31603, 1.4404)
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Standard: ASME SA213
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Type: Seamless Tube (SMLS)
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Size: 19.05 mm OD × 2.11 mm WT
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Manufacturing: MW (minimum wall) precision control
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Testing: 100% Heat Treatment + 100% Eddy Current Testing
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Applications: Heat exchangers, condensers, boilers, chemical plants, marine piping
Specifications
| Item | Details |
|---|---|
| Standard | ASME SA213 |
| Material | TP316L Stainless Steel (Low Carbon Austenitic) |
| Type | Seamless Tube |
| Size | 19.05×2.11 MW |
| Testing | 100% HT + 100% ET |
| Applications | Heat Exchangers, Condensers, Power Plants, Chemical Processing, Marine Systems |
Advantages of TP316L
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Corrosion Resistance – enhanced by molybdenum, excellent against chlorides and seawater.
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Low Carbon Content (L Grade) – reduces risk of carbide precipitation during welding.
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High Reliability – seamless tube with minimum wall control for critical service.
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Heat Treatment – ensures stable mechanical properties and microstructure.
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Non-Destructive Testing – 100% ET ensures defect-free performance.
Applications
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Heat Exchangers & Condensers – widely used in power plants, oil refineries, and chemical plants.
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Boilers & Pressure Vessels – stable under high temperature and pressure.
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Marine Engineering – seawater cooling systems and desalination plants.
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Pharmaceutical & Food Industry – hygienic and corrosion-resistant processing systems.
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Industrial Piping Systems – suitable for aggressive chemicals and fluids.
Quality Assurance
DLSS guarantees quality through:
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100% HT + 100% ET on all tubes.
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PMI Testing to confirm correct grade 316L.
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Hydrostatic Testing upon request.
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Third-Party Inspection by SGS, BV, TUV, LR available.
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Export-Ready Packaging with PE caps and seaworthy wooden cases.
FAQ
Q1: Why choose TP316L over TP304?
A1: TP316L contains 2–3% molybdenum, providing much better resistance to chlorides and acidic environments than TP304.
Q2: What does MW mean in tube specification?
A2: MW refers to Minimum Wall, ensuring that the tube wall thickness never falls below 2.11 mm for safety.
Q3: Why both HT and ET?
A3: Heat Treatment (HT) ensures mechanical stability, while Eddy Current Testing (ET) detects surface defects, guaranteeing reliability in heat exchanger service.
Why Choose DLSS?
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Over 30 years’ experience in stainless steel seamless tube manufacturing.
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Specialized in heat exchanger & condenser tubes for global EPC and end-users.
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Comprehensive testing and inspection ensures compliance with international standards.
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Trusted supplier to shipyards, refineries, chemical plants, and power stations worldwide.
