304L Stainless Steel Pipe | Low-Carbon Excellence for Critical Applications

✓ Weld-Perfect Chemistry: Carbon-restricted design prevents carbide precipitation, achieving AWS D1.6 Class W weld integrity without post-weld treatment.

✓ Corrosion Defense: Survives 1,200+ hours in ASTM G48 salt spray testing – ideal for coastal and chemical exposure.

✓ Hygienic Compliance: Ra ≤0.8μm internal finish meets 3-A Sanitary Standards and EHEDG guidelines for food/pharma use.

✓ Thermal Stability: Operates from **-196°C to 450°C (-321°F to 842°F)** with minimal scaling.

304L Stainless Steel Pipe (ASTM A312/A358)

Engineered for weld-intensive and high-temperature environments, 304L stainless steel pipe offers superior resistance to intergranular corrosion with ultra-low carbon content (≤0.03%). This stabilized austenitic grade retains the versatility of standard 304 while eliminating sensitization risks in welded joints and stress-relieving operations. Certified to ASTM A312/A358, ASME SA-312, and FDA CFR 175.300, it is the trusted choice for chemical processing, food production, and pharmaceutical systems demanding long-term durability under corrosive conditions.

Sizes: 1/8″ to 36″ OD (Seamless/Welded)
Wall Thickness: 0.7mm to 40mm (Schedule 5S to XXS)
Surface Finishes: Annealed, Electropolished (Ra ≤0.5μm), Pickled & Passivated
Mechanical Properties: Yield Strength ≥170 MPa | Tensile Strength ≥485 MPa | Elongation ≥40%

Parameter Category	Value/Description
Material Standard	ASTM A312 / A358 / A269, EN 10217-7, JIS G3459, GB/T 12771
Chemical Composition (%)	C ≤0.03, Cr 18–20, Ni 8–12, Mn ≤2.0, Si ≤1.0, P ≤0.045, S ≤0.03, N ≤0.10
Tensile Strength (MPa)	≥485 (Annealed)
Yield Strength (MPa)	≥170 (Annealed)
Elongation (%)	≥40 (in 50mm gauge length)
Hardness	Brinell (HB): ≤201; Rockwell (HRB): ≤92 (Annealed)
Density (g/cm³)	8.03
Melting Range (°C)	1400–1450
Thermal Conductivity (W/m·K)	16.2 (at 20°C)
Thermal Expansion (10⁻⁶/°C)	17.2 (20–100°C)
Electrical Resistivity (Ω·m)	0.72 × 10⁻⁶ (at 20°C)
Elastic Modulus (GPa)	193
Magnetic Permeability	Non-magnetic (annealed condition)
Corrosion Resistance	Excellent resistance to general corrosion, oxidizing acids, and organic acids. Enhanced resistance to intergranular corrosion (due to ultra-low carbon content).
Heat Treatment	Annealing: 1010–1120°C followed by rapid cooling (water or air quench).
Surface Finishes	Seamless/Welded, Pickled, Bright Annealed, Polished (ID/OD), Bead Blasted.
Dimension Range	– OD: 6mm–1200mm – Wall Thickness: 0.5mm–50mm – Length: 1–12m (custom lengths available).
Standards & Schedules	ASTM (SCH 5S, 10S, 40S, 80S), EN (Light/Medium/Heavy Series), JIS (SGP, STS).
Key Applications	Chemical processing pipelines, food and pharmaceutical tubing, heat exchangers, cryogenic systems, welded structures.

304L Stainless Steel Pipe Applications

Industry	Critical Uses	304L Pipe Advantage
Chemical Plants	Nitric acid transfer lines, vent scrubbers	Resists 65% HNO₃ at 80°C (176°F).
Food Processing	CIP/SIP systems, brine circulation pipes	Electropolished interiors prevent bacterial adhesion.
Pharmaceutical	Purified water loops, bioreactor manifolds	Complies with FDA CFR 211.65 and EU GMP Annex 1.
Energy	Heat exchanger tubes, boiler feedwater lines	Withstands 25MPa pressure at 300°C (572°F).

304L Stainless Steel Pipe Product Packaging

304L stainless steel pipes are engineered for critical applications in oil & gas, construction, and medical industries. To preserve surface integrity and dimensional accuracy during transit, we deploy advanced packaging systems and logistics strategies tailored for tubular products.

Why Choose Us

Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。