304L Stainless Steel Pipe
304L stainless steel has a very similar chemical composition to 304 stainless steel with one key difference. The maximum carbon content is set at 0.08% for 304, whereas grade 304L stainless steel has a maximum carbon content of 0.03%. It is more often adopted in the production of equipment and parts that require better corrosion resistance.
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Product Description

304L Stainless Steel Pipe Description

304L stainless steel pipe is a variant of 304 stainless steel pipe with a lower carbon content and is often used in welding scenarios. The lower carbon content greatly reduces the precipitation of carbides in the heat-affected zone close to the weld, and the precipitation of carbides is associated with intergranular corrosion of stainless steel in certain environments. Basically, the need to anneal weld joints prior to using the completed metal form is not needed using 304L, saving time and effort. Generally speaking, both 304 and 304L stainless steel plates can be used for many of the same applications. The differences are often not significant enough that one is considered more useful over the other. 304L stainless steel plate is more commonly used in fields such as food processing equipment, building materials, automobile parts.

304L stainless steel pipe is a low-carbon austenitic stainless steel product designed for superior corrosion resistance and excellent weldability. It minimizes carbide precipitation during welding, ensuring stable performance in harsh environments. The pipe offers good mechanical strength, smooth surface finish, and long service life. It is widely used in chemical processing, food and beverage systems, water treatment, and architectural structures. With precise manufacturing and strict quality control, 304L stainless steel pipe ensures reliable performance in both industrial and sanitary applications, supporting safe and efficient fluid and structural systems.


Product Parameters

Product Name

304L Stainless Steel Pipe

Type

Steel Pipe

Outer diameter

Round Tube

4mm-200mm

Square Tube

10*10mm-100*100mm

Rectangular Tube

10*20mm-50*100mm

Wall Thickness

0.6mm-6.0mm

Length

1-6 meters, Length can be customized

Standard

ASTM, AISI, JIS, GB, DIN, EN, etc.

Surface

Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4. BA, etc.

Scope of Application

Common applications for stainless steel pipes include food processing,

Textile operations, Breweries, Water treatment plants, Oil and gas processing,

Fertilizers and pesticides, Chemical applications, Construction, Pharmaceuticals, Auto parts, etc.

Certificate

ISO, SGS, BV, etc.

Production Technology

Hot Rolling, Cold Rolling

Edge Processing

Edging, Trimming

 

Chemical Composition

C

Si

Mn

Cr

Ni

S

P

≤ 0.03

≤1.0

≤ 2.0

18.0~20.0

8.0~12.0

≤ 0.03

≤ 0.035

 

Mechanical Properties

Tensile Strength Kb (MPa)

Yield Strength σ0.2 (MPa)

Elongation D5 (%)

Hardness

≥ 520

≥ 205

≥ 40

≤ 187HB ;≤ 90HRB;≤ 200HV

 

Physical Performance

Density(g/cm³)

Modulus of Elasticity(Gpa)

Coefficient of Thermal Expansion(10-6/°C)

Coefficient of Thermal Conductivity(W/m*K)

Resistivity(ΜΩ. cm)

8.03

193

16.9

16.2

72

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Product Application

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Packaging and shipping

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Factory Display

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FAQ

Q1: What types of steel products does your company primarily manufacture and supply?
A: We are a direct manufacturer specializing in carbon steel, hot-dip galvanized steel, PPGI (pre-painted galvanized iron), and stainless steel (grades 201, 304, and 316) in the form of sheets, coils, pipes, and various structural profiles, along with complementary steel structural components. Our products serve a wide range of industries, including infrastructure, photovoltaics, machinery manufacturing, chemicals, and new energy.

 

Q2: Do you support customization regarding material grades, thicknesses, and dimensions?
A: Customization is available across our entire product range. For carbon steel, galvanized steel, and stainless steel, we can adjust thickness, width, and cut-to-length dimensions according to GB, ASTM, or EN standards. Various profiles can be cut and bent based on customer drawings, and special steel grades can be produced through customized scheduling.

 

Q3: What is the difference between galvanized steel and color-coated (PPGI) steel, and how should I choose for my project?
A: Hot-dip galvanized steel features a pure zinc anti-rust layer; it is cost-effective and impact-resistant, making it ideal for mounting brackets, guardrails, and load-bearing factory structures (and it can be painted over). PPGI color-coated steel uses a galvanized base, offering both rust protection and aesthetic appeal with a wide range of colors; it is commonly used for factory roofing, wall cladding, and energy storage equipment casings. We recommend thicker galvanized coatings for projects in rainy coastal areas, color-coated sheets for outdoor projects requiring visual appeal, and weather-resistant fluorocarbon (PVDF) coatings for high-temperature desert environments.

 

Q4: Does the factory keep stock on hand, and what is the minimum order quantity (MOQ)?
A: We operate our own standardized, zoned warehouse with a capacity of over 10,000 tons, maintaining ample stock of carbon steel, galvanized steel, and stainless steel. The MOQ for standard specifications is 1 ton, though we also accept sample orders as small as a few dozen kilograms. There is no upper limit for large-scale projects, and we support mixed-load shipments combining different steel products in a single container.

 

Q5: What are the lead times for stock items versus customized products?
A: Standard stock items take 3–7 days for processing, packaging, and container loading. Simple cutting and bending orders take 7–10 days. Orders requiring mold creation or special steel customization take 15–30 days; exact delivery dates are confirmed based on the customer's specific order specifications.

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