We struggle for creating an environment conducive to innovation activities, to enhance our innovation capabilities, and thereby increase the added value of our a513 type 5, EN10305-1 E235 Seamless Steel Tube, seamless pipe. To meet the needs of all customers with quality is our firm belief and is also the power source for our continuous progress and improvement. Long-term partnership and fruitful cooperation is our goal, we hope that with our strong spirit of innovation and initiative, can accompany our customers and partners struggle together.
Products Description
Product Specifications
| Standards | ASTM A249 / ASME SA249 |
| Steel Grades | TP201 TP202 TPXM-19 TPXM-29 TP304 TP304L TP304H TP304N TP304LN TP305 TP309S TP309H TP309Cb TP309HCb TP310 TP310S TP310H TP310Cb TP310HCb TP316 TP316L TP316H TP316N TP316LN TP317 TP317L TP321 TP321H TP347 TP347H TP348 TP348H TPXM-15 |
| Equivalent Standards | EN 1.4301 / 1.4307 / 1.4404, DIN X5CrNi18-10, JIS SUS304 / SUS316L |
| Outer Diameter (OD) | 6 mm – 219 mm |
| Wall Thickness (WT) | 0.5 mm – 25 mm |
| Length | 6 m,or customized |
| Surface Treatment | Bright Annealed |
| Production Process | Cold Drawn / Cold Rolle |
| Condition | Solution Annealed + BA |
SA 249 TP304 TP316L seamless stainless steel pipe undergoes a bright annealing treatment, resulting in an internal and external surface roughness of Ra ≤ 0.8 μm. This meets the comprehensive requirements for both CIP (Clean-in-Place) and SIP (Sterilize-in-Place) processes, thereby eliminating the risk of contamination to pharmaceutical fluids.
The TP304 material offers resistance to corrosion from neutral media, fresh water, and clean air, satisfying the basic anti-corrosion requirements for standard clean piping systems and presenting no risk of rust formation or scale accumulation.
The TP316L material features a Pitting Resistance Equivalent Number (PREN) of ≥ 25, enabling it to withstand corrosion from pharmaceutical Water for Injection (WFI), clean steam, chlorine-containing pharmaceutical fluids, and acidic or alkaline cleaning solutions. Furthermore, with a carbon content of ≤ 0.03%, it effectively prevents intergranular corrosion-a risk associated with high-temperature sterilization and welding processes. This allows the material to repeatedly endure SIP sterilization cycles at temperatures ranging from 121°C to 135°C, demonstrating superior material stability compared to TP304.
Customized Services
- TORICH offers custom manufacturing for non-standard outer diameters, wall thicknesses, and fixed lengths, catering to the diverse requirements of both small-scale precision tubing and large-scale main transport pipelines.
- Our tubing is supplied with a BA (Bright Annealed) surface finish; we also offer an electropolished surface option, capable of achieving an inner wall roughness of Ra ≤ 0.4 μm. This makes it ideally suited for high-purity piping systems used in applications such as Water for Injection (WFI), biopharmaceuticals, and vaccine production.
- We provide precision cutting and 30°/45° beveling services, executed within a completely dust-free processing environment to ensure full compliance with GMP clean construction standards.
Chemical Composition
| Element | Carbon | Manganese | Silicon | Phosphorus | Sulfur | Chromium | Nickel | Molybdenum | Titanium | Ferrum |
| TP304 | ≤ 0.08 | ≤2.0 | ≤0.75 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.0–11.0 | – | – | Balance |
| TP316L | ≤ 0.035 | ≤2.0 | ≤0.75 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | – | Balance |
| TP348H | ≤ 0.08 | ≤2.0 | ≤0.75 | ≤0.045 | ≤0.030 | 18.0–20.0 | 9.0–13.0 | – | ≥5×C–0.70 | Balance |
| TPXM-15 | 0.10–0.20 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.030 | 15.0–18.0 | 12.0–15.0 | 2.0–3.0 | – | Balance |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HB) |
| TP304 | ≥ 515 | ≥ 205 | ≥ 40 | ≤ 217 |
| TP316L | ≥ 485 | ≥ 170 | ≥ 40 | ≤ 217 |
| TP348H | ≥ 515 | ≥ 205 | ≥ 35 | ≤ 230 |
| TPXM-15 | ≥ 550 | ≥ 250 | ≥ 30 | ≤ 240 |
Possible Alternative Grades
- For conventional purified water and clean gas piping systems requiring slightly higher welding stability, TP304L-a low-carbon version of TP304-may be utilized.
- For pharmaceutical pipelines involving highly corrosive substances, 904L is a suitable choice; it offers excellent resistance to strong acids and high chloride ion concentrations, though it entails a higher cost.
Application areas
ASTM A249 TP304 / TP316L seamless stainless steel tubes are suitable for the following applications:
TP304 BA seamless tubes are used for general purified water, clean compressed air, neutral process media, piping systems in inland pharmaceutical facilities, and similar applications.
TP316L BA seamless tubes are used for Water for Injection (WFI), clean steam, CIP/SIP systems, chlorine-containing pharmaceutical solutions, biopharmaceuticals/vaccines, piping systems in coastal pharmaceutical facilities, and similar applications.
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
The tubing undergoes degreasing and ultrasonic cleaning, and its ends are sealed with plastic caps and double-layer PE packaging to ensure it remains free from contamination during storage and transport.
FAQ
Q: Why does the pharmaceutical industry prioritize BA (Bright Annealed) tubing over standard pickled tubing?
A: BA tubing features a mirror-finish inner surface that is free of scale and acid-pickling residues (Ra ≤ 0.8 μm); this finish effectively prevents biofilm formation and allows for repeated sterilization. In contrast, pickled tubing possesses a lower surface finish quality, making it prone to harboring contaminants and unable to meet the stringent cleanliness and compliance requirements of the pharmaceutical sector.
Q: Does the tubing comply with FDA and cGMP certification requirements?
A: Absolutely. We can provide material certificates, test reports, and compliance declarations, and we fully support pharmaceutical companies during GMP facility inspections and third-party audits.
Q: Can the BA surface withstand high-temperature steam sterilization?
A: Yes. The material-stabilized through vacuum annealing-exhibits exceptional stability and can withstand repeated steam sterilization cycles at temperatures ranging from 121°C to 135°C without deformation, oxidation, or performance degradation.
These initiatives include the availability of customized designs with speed and dispatch for 253mA Welded ASTM A249 TP304 Stainless Steel Tubes for Heat Exchanger. Quality first, reputation first, after-sales guarantee, brand achievement is our business policy! We constantly improve the production process and quality, aiming to face customers with good quality, meeting the needs of users of different classes.
Hot Tags: sa 249 tp304 tp316l seamless stainless steel pipe, China, suppliers, manufacturers, factory, customized, wholesale, price, OEM, mill, producer, for sale, carbon steel seamless tube, low end steel rod, seamless steel tube well-known, building steel rod, fire protection system carbon steel tube, seamless steel tube