Introduction
The ASTM A213 TP304 Seamless Bright Annealed (BA) Tube is a high-quality stainless steel tube widely used in oil refineries, petrochemical plants, and power industries. With its 18/8 austenitic composition (18% Cr, 8% Ni), TP304 provides reliable corrosion resistance, excellent formability, and stable performance in high-temperature service.
DLSS supplied ∅19×2.0(min)×12000mm seamless tubes, processed with Bright Annealed surface for a smooth, oxide-free finish. Every tube is fully tested with 100% Heat Treatment (HT), 100% Eddy Current Testing (ET), and 100% Ultrasonic Testing (UT) to guarantee both surface and internal integrity, making them ideal for oil refinery heat exchangers and process units.
Key Features
-
Material: Stainless Steel TP304 (UNS S30400 / 1.4301)
-
Standard: ASTM A213
-
Type: Seamless Bright Annealed Tube
-
Size: ∅19 mm OD × 2.0 mm min WT × 12000 mm Length
-
Surface: Bright Annealed (BA), smooth and oxide-free
-
Testing: 100% HT + 100% ET + 100% UT
-
Application: Oil refineries, chemical processing, boilers, condensers, and heat exchangers
Specifications
| Item | Details |
|---|---|
| Standard | ASTM A213 |
| Material | TP304 Stainless Steel (18Cr–8Ni) |
| Type | Seamless Bright Annealed Tube |
| Size | ∅19×2.0(min)×12000mm |
| Testing | 100% HT + 100% ET + 100% UT |
| Applications | Oil Refineries, Heat Exchangers, Boilers, Condensers, Power Plants |
Advantages of TP304 BA Tubes
-
Bright Annealed Finish – ultra-clean, smooth surface reduces scaling and fouling.
-
Comprehensive Testing – 100% HT for stability, ET for surface defects, UT for internal flaws.
-
Excellent Corrosion Resistance – reliable in refinery and chemical process media.
-
Long-Length Manufacturing (12m) – reduces weld joints in heat exchanger assembly.
-
Versatile Applications – suitable for petroleum, chemical, food, and marine industries.
Applications
-
Oil Refinery Heat Exchangers – process cooling and heating circuits.
-
Petrochemical Plants – corrosive fluid transfer.
-
Boilers & Condensers – stable under cyclic thermal stress.
-
Power Generation Systems – steam handling and high-temperature service.
-
General Process Piping – clean and corrosion-resistant tubing for industrial use.
Quality Assurance
DLSS ensures top-level quality with:
-
PMI Testing – confirms correct TP304 grade.
-
Dimensional Inspection – precise tolerance control for exchanger fit-up.
-
NDT (ET + UT) – ensures surface and internal defect-free tubes.
-
Third-Party Inspection – SGS, BV, TUV, LR available on request.
-
Seaworthy Packaging – PE end caps, plastic wrap, and wooden cases.
FAQ
Q1: Why choose Bright Annealed (BA) tubes for oil refineries?
A1: BA tubes provide smooth, oxide-free surfaces, ensuring cleaner fluid flow and reduced contamination.
Q2: Why both Eddy Current and Ultrasonic Testing?
A2: ET detects surface flaws, while UT identifies internal defects, ensuring total reliability.
Q3: Can DLSS supply extra-long tubes like 12 meters?
A3: Yes, DLSS offers up to 12m seamless tubes, reducing welds in large heat exchanger bundles.
Why Choose DLSS?
-
30+ years of tube manufacturing expertise.
-
Specialized in refinery and heat exchanger applications.
-
Comprehensive QC – HT, ET, UT, PMI, and dimensional checks.
-
Trusted supplier for EPC projects and oil majors worldwide.
