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Quality Hot Processed Stainless Steel Round Pipe 304 304L 310S 321 Hot Finished Seamless Pipe factory
Quality Hot Processed Stainless Steel Round Pipe 304 304L 310S 321 Hot Finished Seamless Pipe factory

Hot Processed Stainless Steel Round Pipe 304 304L 310S 321 Hot Finished Seamless Pipe

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Hot Processed Stainless Steel Round Pipe
Product Summary
Hot processed stainless steel round tube refers to seamless tubing manufactured through hot forming operations, where solid stainless steel billets are heated to approximately 1200°C (2190°F) and then pierced, rolled, and elongated to achieve the desired dimensions. This manufacturing method ...

Product Details

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Hot Processed Stainless Steel Round Pipe

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Stainless Steel Round Pipe 310S

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Stainless Steel Hot Finished Seamless Pipe
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

Hot processed stainless steel round tube refers to seamless tubing manufactured through hot forming operations, where solid stainless steel billets are heated to approximately 1200°C (2190°F) and then pierced, rolled, and elongated to achieve the desired dimensions. This manufacturing method produces a tube with no longitudinal weld seam, offering uniform mechanical properties, consistent wall thickness, and superior pressure-holding capability.

The hot processing method – also known as hot finished or hot rolled – is particularly suitable for larger diameters, heavier wall thicknesses, and applications where extremely tight dimensional tolerances are not critical. Compared to cold drawn tubes, hot processed tubes offer cost advantages for standard sizes and are available in a wider range of diameters and wall thicknesses.

The seamless hot formed construction eliminates potential weak points associated with welded seams, making hot processed stainless steel round tubes the preferred choice for high-temperature and high-pressure applications in chemical processing, power generation, oil and gas, and general industrial service. The absence of a weld seam also eliminates the risk of weld-related corrosion issues such as intergranular attack or preferential weld corrosion.

Hot processed stainless steel round tubes are available in a wide range of austenitic grades, including 304/304L, 316/316L, 310S, 321, 347, and duplex grades such as 2205 and 2507. The tubes are typically supplied in the solution annealed and pickled condition (AP finish), which removes mill scale and restores corrosion resistance.

Product Specifications
Parameter Details
Product Name Hot Processed Stainless Steel Round Tube
Standards ASTM A312, A358, A213, A269, EN 10216-5, JIS G3459, GB/T 14976
Construction Seamless (Hot Rolled / Extruded)
Grades 304, 304L, 304H, 316, 316L, 316H, 316Ti, 321, 321H, 310S, 317L, 347, 347H, 904L, Duplex 2205, Super Duplex 2507
Outer Diameter (OD) 50mm – 600mm (2″ – 24″+); larger sizes available on request
Wall Thickness 3mm – 50mm+ (Schedule 10S through XXS)
Length 3m – 12m (10′ – 40′); random or fixed lengths
Surface Finish Black (as-rolled), Pickled, Sandblasted, Turned
Manufacturing Process Hot Rolling / Hot Extrusion
Available Grades & Standards
Grade Standard Key Characteristics Temperature Range Typical Applications
304/304L ASTM A312 General-purpose, good corrosion resistance -196°C to 800°C Chemical tanks, piping
304H ASTM A312 High carbon version, better high-temp strength 500°C – 800°C High temperature service
316/316L ASTM A312 Molybdenum added, chloride resistance -196°C to 800°C Marine, chemical, coastal
316H ASTM A312 High carbon 316, high-temp creep resistance 500°C – 800°C High temp chemical service
316Ti ASTM A213 Titanium stabilized, high temperature -200°C to 800°C Heat exchangers
321/321H ASTM A213 Titanium stabilized, carbide precipitation resistant 400°C – 900°C Aircraft, exhaust, thermal
310S ASTM A312 High temperature up to 1100°C Up to 1100°C Furnace parts, radiant tubes
317L ASTM A312 Higher molybdenum than 316 -196°C to 800°C Pulp & paper, aggressive chemicals
347/347H ASTM A213 Niobium stabilized, high temp 400°C – 900°C High temp, thermal cycling
904L ASTM A312 Super austenitic, severe corrosion -196°C to 400°C Sulfuric acid, seawater
2205 ASTM A790 Duplex, high strength + SCC resistance -50°C to 300°C Offshore, desalination
2507 ASTM A790 Super duplex, highest strength -50°C to 300°C Subsea, chemical tankers
Chemical Composition (%)
Grade C Mn Si Cr Ni Mo N Others
304L ≤0.030 ≤2.00 ≤1.00 18.0-20.0 8.0-12.0 – – –
304H 0.04-0.10 ≤2.00 ≤1.00 18.0-20.0 8.0-11.0 – – –
316L ≤0.030 ≤2.00 ≤1.00 16.0-18.0 10.0-14.0 2.0-3.0 – –
316H 0.04-0.10 ≤2.00 ≤1.00 16.0-18.0 10.0-14.0 2.0-3.0 – –
310S ≤0.08 ≤2.00 ≤1.50 24.0-26.0 19.0-22.0 – – –
321 ≤0.08 ≤2.00 ≤1.00 17.0-19.0 9.0-12.0 – – Ti ≥5×C
2205 ≤0.030 ≤2.00 ≤1.00 22.0-23.0 4.5-6.5 3.0-3.5 0.14-0.20 –
2507 ≤0.030 ≤1.20 ≤0.80 24.0-26.0 6.0-8.0 3.0-5.0 0.24-0.32 –
Mechanical Properties
Hot Rolled + Annealed Condition (Typical)
Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness (HB max)
304L ≥485 ≥170 ≥40 ≤201
304H ≥515 ≥205 ≥40 ≤201
316L ≥485 ≥170 ≥40 ≤217
316H ≥515 ≥205 ≥40 ≤217
310S ≥515 ≥205 ≥40 ≤217
321 ≥515 ≥205 ≥35 ≤217
2205 ≥620 ≥450 ≥25 ≤293
2507 ≥730 ≥550 ≥20 ≤310
High Temperature Properties (316H – Typical)
Temperature (°C) Tensile Strength (MPa) Yield Strength (MPa) Creep Rupture (100,000h)
500 450 180 120 MPa
600 350 140 70 MPa
700 220 90 35 MPa
800 140 55 15 MPa
Physical Properties
Property 304/304L 316/316L 310S 2205
Density (g/cm³) 7.93 7.98 7.98 7.80
Modulus of Elasticity (GPa) 193 193 190 190
Melting Point (°C) 1400-1450 1370-1400 1400-1450 1350-1400
Thermal Conductivity at 100°C (W/m·K) 16.2 16.3 14.2 19.0
Thermal Expansion (20-100°C) (10⁻⁶/°C) 17.2 17.2 15.9 13.7
Electrical Resistivity (μΩ·cm) 72 74 78 80
Dimensions & Schedule Chart
Standard Hot Rolled Pipe Sizes (ASTM A312)
NPS (inch) OD (mm) Schedule 10S (mm) Schedule 40S (mm) Schedule 80S (mm) Schedule 160 (mm) XXS (mm)
2″ 60.3 2.77 3.91 5.54 8.74 11.07
3″ 88.9 3.05 5.49 7.62 11.13 15.24
4″ 114.3 3.05 6.02 8.56 13.49 17.12
6″ 168.3 3.40 7.11 10.97 18.26 21.95
8″ 219.1 3.76 8.18 12.70 23.01 22.23
10″ 273.1 4.19 9.27 15.09 28.58 25.40
12″ 323.9 4.57 10.31 17.48 33.32 25.40
14″ 355.6 3.96 11.13 19.05 35.71 –
16″ 406.4 4.19 12.70 21.44 40.49 –
18″ 457.2 4.19 14.27 23.83 45.24 –
20″ 508.0 4.78 15.09 26.19 50.01 –
24″ 609.6 5.54 17.48 30.96 59.54 –
Larger Diameters Available on Request
OD (mm) Typical Wall Thicknesses (mm)
711 (28″) 8.0 – 50.0
813 (32″) 8.0 – 50.0
914 (36″) 10.0 – 60.0
1016 (40″) 10.0 – 60.0
1219 (48″) 12.0 – 60.0
Dimensional Tolerances (ASTM A312 – Hot Rolled)
Parameter Tolerance
OD (≤100mm) ±0.5mm
OD (100-200mm) ±0.8mm
OD (200-300mm) ±1.0mm
OD (300-500mm) ±1.5mm
OD (>500mm) ±2.0mm or ±0.5%
Wall Thickness ±12.5%
Length (fixed) +5mm / -0mm
Straightness ≤1.5mm per meter
Out-of-Roundness Within OD tolerance

 

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