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Daxun 321 and 321H stainless steel PIPE and TUBE China supplier

As China’s leading Stainless Steel pipe and tube supplier and exporter, Daxun provides stainless steel PIPEs to the world.
  • Grade: AISI 321/321H-S32100
  • Manufacturing: hot-rolled, cold-drawn, forged, welded
  • Standards: ASTM, ASME, GB, DIN, JIS, ISO, EN, BS
  • Type: both seamless and welded pipes
  • Diameter: from small diameter to large diameter pipes
  • Thickness: thin-walled pipes and thick-walled pipes
  • Surface: pickled, polished, bright annealed
  • Length: 3000mm, 6000mm, 9000mm, etc.

Global leader in stainless steel pipe and tube fabrication services

ASTM A312 / A358 Stainless Steel 321 Pipe Supplier; 321 / 321H Stainless Steel Seamless Pipe, Contact us for ASME SA312 321 Stainless Steel Pipe.

Type 321 stainless steel is an austenitic steel. It shares many of the same properties as Type 304, but with increased titanium and carbon content. Type 321 provides metal fabricators with superior corrosion and oxidation resistance, as well as exceptional toughness even at cryogenic temperatures. It is very resistant to oxidation and corrosion. Titanium in 321 stainless steel provides various attractive properties: Prevents harmful carbide precipitation in the heat affected zone (HAZ) of the weld. Offers partial protection against intergranular corrosion. Reduces embrittlement in high-risk areas of the weld. 321H stainless steel is commonly used in applications where parts are heated to carbide precipitation temperatures (800°F-1500°F) and exposed to corrosive atmospheres. 321 stainless steel is identical to 304 stainless steel, however it contains more nickel and is stabilised with titanium. Titanium preferentially interacts with the carbon in the steel, preventing the formation of chromium carbides at the grain boundaries. This maintains corrosion resistance qualities by minimising chromium consumption near the grain borders during exposure to critical temperatures. This grade hardens well with cold working. It is easily weldable and rarely requires post-weld annealing to maintain its outstanding performance in a variety of corrosive conditions.

321 Stainless Steel Seamless Pipe, 321 Stainless Steel ERW Pipe, 321 Stainless Steel EFW Pipe, 321 Stainless Steel Welded Pipes and Tubes (ASTM A213 / A312 / A269 / A358)

Daxun Alloys is a prominent producer, supplier, stockist, and exporter of high-quality stainless steel products such as Stainless Steel 321/321H Steel Pipes. The pipes we offer are manufactured in accordance with national and international raw material quality standards. The industry provides a vast selection of pipes with varied standards, sizes, and specifications. The pipes are easily available in customised specifications based on the needs of the consumers. As a result, purchasers can select items in a variety of sizes, wall thickness, length, diameters, and other specifications to meet their specific requirements. The products are sold to both international and domestic buyers at market-leading pricing. We provide a variety of mechanical tests to test and assure our products. To supply our valued clients with high satisfaction, we conduct flare tests, hardness testing, micro and macro tests, chemical tests, and so on.

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Data

WERKSTOFF NR.1.4541 SS 321 Specification Stainless Steel 321, ASTM A312 TP 321 SS
DIN 1.4541 SS 321 Pipe 321 Stainless Steel Pipe
SS 321 Seamless Pipe Size 4 to 630mm W. T.: 0.5 to 50mm
321 Stainless Steel Welded Pipe Size 5.0 mm – 1219.2 mm
SS UNS S321 EFW Pipe size 5.0 mm – 1219.2 mm
ASTM A312 Stainless Steel Pipe Swg & Bwg 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
SA312 TP321 Pipe Schedule SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
DIN 1.4541 SS 321 Swg & Bwg 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg.
321 Stainless Steel Tube wall thickness 0.020″ –0.220″, (special wall thicknesses available)
321 Steel Length Single Random, Double Random, Standard & Cut length Pipe & Tube
ASTM A312 TP 321 Stainless Steel Finish Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF
UNS S32100 Form Round, Hydraulic, ‘U’ bent or Hollow,LSAW, Boiler, Straight Pipe, Clad Pipe, Rectangular, Square Pipe Etc
Stainless Steel 321 Type Welded, Seamless, ERW, EFW, Fabricated Pipe, ‘U’ bent or Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Tube etc
321 Steel End Plain End, Beveled End, Treaded Pipe
SS 321 Marking All 321 Stainless Steel Pipe are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
ASTM A 358 SS 321 Application Oil Pipe & Tube, Gas Pipe & Tube, Fluid Pipe & Tube, Boiler Pipe & Tube, Heat exchanger Tube
ASTM A312 TP 321 SS Value Added Service Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc.
ASTM A 312 SS 321 Specialize in Alloy 321 Large Diameter Pipe
WERKSTOFF NR.1.4541 SS 321 Capillary Tube
SS TP321 Heat Exchanger &
TP321 SS Condenser Tube
SS TP321 Test Certificate Manufacturer Test Certificate
Laboratory Test Certificate from Govt. Approved Lab.
Under Third Party Inspection
Manufacturers of 321 Stainless Steel Pipe Baosteel Stainless Steel
Taigang Stainless Steel
Qingshan Stainless Steel
ATI of the United States
Nippon Steel
Posco of South Korea
Marking All 321 Stainless Steel tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.)
321/321H stainless steel tubing Testing & Inspection Visual inspection • Surface roughness measurement • Helium-leak testing • Scanning Electron Microscopy (SEM) • Auger Electron Microscopy (AES) • Election Spectroscopy for Chemical Analysis (ESCA or XPS) • Particle testing • Moisture testing
We can also cut, thread, and groove 321 Stainless Steel Pipe to meet your specifications. Pipe Dimension ANSI/ ASME B36.10, B36.19, B2.1
Composition 321/321H Pipe and Tubing
Grade 321 321H
UNS Designation S32100 S32109
Carbon (C) Max. 0.08 0.04–0.10
Manganese (Mn) Max. 2 2
Phosphorous (P) Max. 0.04 0.04
Sulphur (S) Max. 0.03 0.03
Silicon (Si) Max. 0.75 0.75
Chromium (Cr) 17.0–20.0 17.0–20.0
Nickel (Ni) 9.0–12.0 9.0–12.0
Molybdenum (Mo)
Nitrogen (N) 0.1 Max. 0.1 Max.
Iron (Fe) Bal. Bal.
Other Elements Ti=5(C) to 0.70% Ti=4(C) to 0.60%
Physical Properties of 321/321H Alloys in the Annealed Condition at -20°F to +100°F
Tensile Strength Yield Strength
Alloy UNS Designation Spec. psi MPa ksi psi MPa ksi Elongation in 2 inches (min.) % Grain Size Req. Maximum Harndess Modulus of Elasticity (x106 psi) Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) Thermal Conductivity (BTU-in/ft2-h-°F)
321 S32100 75,000 515 30,000 205 35 29 9.2
321H S32109 75,000 515 30,000 205 35 7 or coarser 29 9.2
Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
321/321H 8027 193 16.6 17.2 18.6 16.1 22.2 500 720
Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
321 S32100 321S31 58B, 58C 1.4541 X6CrNiTi18-10 2337 SUS 321
321H S32109 321S51 1.4878 X10CrNiTi18-10 SUS 321H
ASTM A312 / A213 / A249 TP 321 Stainless Steel Pipes & Tubes ASTM A249 321 Stainless Steel Square Seamless Pipes
ASTM A358 TP 321 Stainless Steel EFW Pipes ASME TP 321 Stainless Steel Electric Fusion Welding Pipes
Stainless Steel 321 Workstoff Nr. 1.4541 Pipes & Tubes TP 321 SS EFW Tubing
ASTM A312 SS 321 Round Pipes Stainless Steel JIS SUS 321 Cold Rolled Coiled Tubing
SS 321 Polished Pipes ASTM A249 321 Stainless Steel Tubing
321 Stainless Steel Pipes and Tubes SS 321 Austenitic Stainless Steel Pipes & Tubes
ASTM A312 TP 321 SS Seamless Pipes TP 321 Stainless Steel LSAW Pipes
SS DIN 1.4541 Rectangular Welded Pipes ASTM A213 Stainless Steel TP 321 Capillary Tube
TP 321 SS ERW Pipes Stainless Steel 321 U Shaped Tubing
TP321 Stainless Steel EFW Tubing TP 321 Stainless Steel Hydraulic Tubes
ASTM A213 SS TP321 Pipes A213 SS 321 Electric Resistance Welding Pipes
Stainless Steel 321 Black Round Tubes Stainless Steel ASTM A213 TP 321 Welded Tubing
ASTM A213 SS Seamless Tubing AISI Stainless Steel ASTM A249 321 Seamless Tubing
Stainless Steel 321 Welded Tubes SS ASME SA 269 TP 321 Welded Tubes
ASTM A312 TP 321 Stainless Steel Welded Pipes TP 321 Stainless Steel Instrumentation Tubes
SS UNS S32100 Square Pipes Stainless Steel 321 Pipe
TP 321 Stainless Steel Pipes & Tubing SS JIS SUS 321 Pipes
Stainless Steel TP 321 Seamless Pipes ASTM A358 TP 321 Stainless Steel EFW Pipes
ASTM A213 TP 321 Stainless Steel Seamless Tubes SS 321 Hexagonal Pipe
Stainless Steel TP 321 Seamless Tubing Austenitic Stainless Steel 321H Pipes
ASTM A213 Stainless Steel Welded Pipes SS UNS S32109 Welded 321 Pipe
A249 SS TP 321 Welded Tubes ASTM A312 TP 321 Stainless Steel Seamless Pipes
ASTM A312 321 Stainless Steel ERW Pipes 321 SS Hallow Pipe
A312 SS 321 Rectangular Seamless Pipes SS TP321 Seamless Pipe
ASTM A213 321 Stainless Steel Rectangular Tubes Stainless Steel 321 Seamless Pipe
TP 321 Stainless Steel ERW Tubes ASTM A249 TP 321 Stainless Steel Welded Tubes
Stainless Steel UNS S32100 Pipes & Tubes Stainless Steel 321 Welded Pipes
UNS S32100 Stainless Steel Coiled Seamless Tubing ASTM A312 TP 321 Stainless Steel Seamless Pipes
Stainless Steel TP 321 Heat Ex-changer Tubes SS 321 Hallow Pipe
ASTM A312 TP 321 Stainless Steel Pipes & tubes TP321 SS Welded Pipe
Stainless Steel DIN 1.4541 Round Tubing Stainless Steel 321 Round Pipe
Stainless Steel ASTM A213 TP 321 Welded Pipe AISI Stainless Steel ASTM A249 321 Seamless Pipe
SS ASME SA 269 TP 321 Welded Pipe TP 321 Stainless Steel Instrumentation Pipe
Stainless Steel 321 Pipe SS JIS SUS 321 Pipe
ASTM A358 TP 321 Stainless Steel EFW Pipe SS 321 Hexagonal Pipe
Austenitic Stainless Steel 321H Pipe SS UNS S32109 Welded 321 Pipe
ASTM A312 TP 321 Stainless Steel Seamless Pipe 321 SS Hallow Pipe
SS TP321 Seamless Pipe Stainless Steel 321 Seamless Pipe
ASTM A249 TP 321 Stainless Steel Welded Pipe Stainless Steel 321 Welded Pipe
ASTM A312 TP 321 Stainless Steel Seamless Pipe SS 321 Hallow Pipe
TP321 SS Welded Pipe Stainless Steel 321 Round Pipe
AISI Type 321 Stainless Steel Pipe 321 Stainless Steel Pipe

Choose Daxun and make your customers satisfied.

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  • Good formability and weldability
  • Works at temperatures up to 870°C
  • Resistant to acids, alkalis and low temperatures
  • Responds well to cold work hardening
  • Good welding characteristics
  • Excellent corrosion resistance
  • Manufacturing: hot-rolled, cold-drawn, forged, welded
    Standards: ASTM, ASME, GB, DIN, JIS, ISO, EN, BS
    Type: both seamless and welded pipes
    Diameter: from small diameter to large diameter pipes
    Thickness: thin-walled pipes and thick-walled pipes
    Surface: pickled, polished, bright annealed
    Length: 3000mm, 6000mm, 9000mm, etc.Grade: AISI 321/321H-S32100
    Manufacturing: hot-rolled, cold-drawn, forged, welded
    Standards: ASTM, ASME, GB, DIN, JIS, ISO, EN, BS
    Type: both seamless and welded pipes
    Diameter: from small diameter to large diameter pipes
    Thickness: thin-walled pipes and thick-walled pipes
    Surface: pickled, polished, bright annealed
    Length: 3000mm, 6000mm, 9000mm, etc.
  • 321 Stainless Steel pipe
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321 Stainless Steel pipe Daxun Advantages

  • Variety: From small to large diameter stainless steel pipe, we offer a wide range of sizes and grades, including 304L, 316L, 317L ,321,310,347,2205and more.
  • Flexibility: Whether you need seamless or welded steel pipe, our stainless steel pipe lengths are designed to meet your specific project requirements.
    Quality
  • Standards: Our stainless steel pipes meet stringent standards such as ISO9001, ABS, NSF/ANSI Standard 61, and NACE MR0175 to ensure reliability and performance.
  • Custom Orders: Looking for special size stainless steel pipes? We offer a variety of stainless steel pipe custom options at competitive prices and convenient online ordering.
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321 Stainless Steel pipe packaging

  1. Woven bag bale cargo (hexagonal)
  2. Special crates for U-bend pipes, (steel/wood) divided
  3. Each bale is wrapped in plastic to protect against wind and rain.
  4. SS 321 seamless pipes are protected by plastic covers.
  5. Plastic strips are used to secure the bale.
  6. Export-specific fumigation-free wooden crate packaging.
  7. Laminated packing slip attached to the bale or crate.
  8. Customized packaging as per customer needs.
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321 Stainless Steel pipe Ordering Information

321 stainless steel pipe The purchase order shall include quantity, PSL grade, type or class, API5L reference, outside diameter, wall thickness, length and any applicable attachments or additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coating or end finish. Pipe is solution bright annealed.

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Quality, delivery, inspection

  • Daxun also conducts several quality assurance tests. These tests include flattening test, pitting and resistance test, mechanical test, hardness test, material positive identification, expansion test, etc. All these tests ensure that the material is suitable for the required application.
  • During the production process, we measure the diameter, thickness, and surface of the product. Our standard delivery time is 7-15 days, except for some special size products, our delivery time will increase to 20 days.
    Our delivery time is strictly in accordance with the contract.
  • Support customer third-party agencies to go to the factory for inspection
  • Support free samples to customers for testing
  • Support on-site or video factory inspection
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Technical Support

If you need any additional technical assistance, our resident metallurgist and knowledgeable staff will be pleased to help. Additionally, Daxun boasts a certified testing laboratory.

321/321H Stainless Steel pipe and tube Features

High strength
Corrosion resistance
Heat resistance
Low temperature resistance
Environmental protection
Welding performance

Daxun Alloy Let your brand improve rapidly

PRESSURE RATING (PSIG)
SIZES SCHEDULE (SCH) OUTSIDE WALL TEMPERATURE (OF)
(INCHES) DIA. THICK. 100 200 300 400 500 600 650 700 750
(IN) (IN) ALLOWABLE STRESS (PSI)
16700 16700 16700 15500 14400 13500 13200 12900 12600
1″ 40 1.315 0.133 2205 2205 2205 2047 1902 1783 1743 1703 1664
80 1.315 0.179 3061 3061 3061 2841 2640 2475 2420 2365 2310
160 1.315 0.25 4493 4493 4493 4170 3874 3632 3552 3471 3390
1 1/2″ 40 1.9 0.145 1629 1629 1629 1512 1404 1317 1287 1258 1229
80 1.9 0.2 2303 2303 2303 2138 1986 1862 1821 1779 1738
160 1.9 0.281 3362 3362 3362 3120 2899 2717 2657 2597 2536
2″ 40 2.375 0.154 1371 1371 1371 1272 1182 1108 1083 1059 1034
80 2.375 0.218 1985 1985 1985 1843 1712 1605 1569 1534 1498
160 2.375 0.344 3283 3283 3283 3047 2831 2654 2595 2536 2477
3″ 40 3.5 0.216 1301 1301 1301 1208 1122 1052 1028 1005 982
80 3.5 0.3 1844 1844 1844 1712 1590 1491 1458 1425 1391
160 3.5 0.438 2787 2787 2787 2587 2403 2253 2203 2153 2103
4″ 40 4.5 0.237 1102 1102 1102 1023 950 891 871 851 831
80 4.5 0.337 1596 1596 1596 1482 1377 1291 1262 1233 1204
160 4.5 0.531 2611 2611 2611 2424 2552 2111 2064 2017 1970
5″ 40 5.563 0.258 965 965 965 896 832 780 763 746 728
80 5.563 0.375 1428 1428 1428 1325 1231 1154 1129 1103 1077
160 5.563 0.625 2474 2474 2474 2296 2133 2000 1955 1911 1866
6″ 40 6.625 0.28 877 877 877 814 756 709 693 677 661
80 6.625 0.432 1379 1379 1379 1280 1189 1115 1090 1065 1040
160 6.625 0.719 2382 2382 2382 2211 2054 1925 1883 1840 1797
8″ 40 8.625 0.322 771 771 771 716 665 623 610 596 582
80 8.625 0.5 1218 1218 1218 1131 1050 985 963 941 919
160 8.625 0.906 2298 2298 2298 2133 1982 1858 1817 1775 1734
10″ 40 10.75 0.365 699 699 699 649 603 565 553 540 528
80 10.75 0.594 1159 1159 1159 1075 999 937 916 895 874
160 10.75 1.125 2289 2289 2289 2124 1974 1850 1809 1768 1727
Types Out diameter Sizes Length
NB Sizes (in stock) .0035” ~ 20” 1/8″, 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, 1″, 1.25″, 1.5″, 2″, 2.5″, 3″, 4″, 5″, 6″etc Cut to length
Stainless Steel 321/321H Seamless Tube (Custom Sizes) 6.35 mm OD To 508 mm OD As per requirement Cut to length
Stainless Steel 321/321H Welded Tube (ERW Tube) (in Stock + Custom Sizes) 6.35 mm OD To 1219 mm OD As per requirement Cut to length
Surface Finish Internal Surface(ID) Exterbal Surface(OD)
Roughness Average(RA) Roughness Average(RA)
μ inch μm μ inch μm
AP Annealed & Pickled Not defined Not defined 40 or Not defined 1.0 or Not defined
BA Beight Annealed 40,32,25,20 1.0,0.8,0.6,0.5 32 0.8
MP Mechanical Polish 40,32,25,20 1.0,0.8,0.6,0.5 32 0.8
EP Electro Polish 15,10,7,5 0.38,0.25,0.20;0.13 32 0.8

The surface and shape of 321/321H stainless steel pipe (6)

Information available for reference and download

Daxun is a trustworthy stainless steel pipe and tube manufacturer

As a professional manufacturer, Daxun ensures that all the products we produce are of high quality. Therefore, we ensure that all stainless steel tubes are certified by ISO9001, SGS, CE, OQC and more international quality standards.We also have strict quality control to ensure that the 321 Stainless Steel pipe have less defects. At Daxun, rest assured that all products are durable, high quality and high performance.

Recent hot case projects and products

321/321H stainless steel pipe
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321/321H stainless pipe
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Can I get some samples?

We can provide 321 Stainless Steel pipe samples for you to check the quality. Sample is free and you just pay the freight.

Which countries have you already exported?

We’ve exported to more than 42 countries, such as Canada, Chile, Kuwait, Germany, South Korea, Saudi Arabia, Singapore etc.

What is your MOQ?

Our MOQ is 1 ton for 321 Stainless Steel pipe.

How long is your delivery time?

Trial orders can be delivered within a week. For regular orders, it takes two weeks roughly.

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