321 Stainless Steel Tube ASME SA312 Easy to Weld Od 6.35mm-426mm Chemical Pipelines 321 Stainless Steel Pipe

• Customization: Available
• Type: Stainless Steel Pipes
• Standard: ASTM, AISI, GB, JIS, EN
• Model NO.: 321 Stainless Steel pipe
• Grade: Ss321 S32100 321
• Certification: ISO, RoHS, IBR, AISI, ASTM, GB, EN, DIN, JIS
• Shape: Round
• Technique: Hot Rolled
• Surface Treatment: Pickling
• Thickness: 0.3mm-100mm
• Length: 2000mm-9000mm
• Surface: Pickling, Polishing, Ba
• Delivery State: Solution Annealing
• Transport Package: Wooden Box + Strapping
• Specification: OD 6.35mm-OD 1219mm
• Trademark: Daxun
• Origin: China
• Production Capacity: 10000ton

Product Description

Product Description

Product Parameters

 

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
321L Stainless Steel Welded Pipe Size	5.0 mm - 1219.2 mm
SS UNS S32103 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.
321l 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 321l 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

 

Detailed Photos

Supplier of ASTM A312 / A358 Stainless Steel 321 Pipe; Seamless 321 / 321H Stainless Steel Pipes available. Contact us for premium ASME SA312 321 Stainless Steel Pipes and experience high durability and reliability.

Type 321 stainless steel is a high-performance austenitic steel, boasting superior corrosion and oxidation resistance compared to Type 304 due to its increased titanium and carbon content. This grade excels in toughness, even at cryogenic temperatures, and is highly resistant to oxidation. The titanium content in 321 stainless steel offers several benefits: it prevents harmful carbide precipitation in the heat-affected zone (HAZ) of welds, provides partial protection against intergranular corrosion, and minimizes embrittlement in high-risk weld areas. Ideal for applications heated to carbide precipitation temperatures (800°F-1500°F) and exposed to corrosive environments, 321H stainless steel is a robust choice. Unlike 304 stainless steel, 321 contains more nickel and is stabilized with titanium, which interacts with carbon to prevent chromium carbide formation at grain boundaries, thus retaining corrosion resistance at critical temperatures. Additionally, 321 stainless steel hardens well with cold working, is easily weldable, and rarely requires post-weld annealing, ensuring outstanding performance in various corrosive conditions.

Stainless Steel Welded Tubes

Crafted from stainless steel strips, our stainless steel tubular products are roll-formed and fusion-welded along the longitudinal seam. The advanced welding techniques used by Daxun ensure no filler metal is required during the welding process, ensuring a seamless and high-quality finish.

Quick Response

• Excellent Formability and Weldability
• Operates at Temperatures up to 900°C
• Resistant to Acids, Alkalis, and Low Temperatures
• Responds Well to Cold Work Hardening
• Exceptional Welding Characteristics
• Superior Corrosion Resistance
• High Creep and Stress Rupture Properties Grade: AISI 321/321H-S32100

 

Stainless Steel Drawn Tube

Our stainless steel tubular products are rolled and subsequently re-drawn to achieve the final size. This process is ideal for producing thick-walled, large-diameter tubes that cannot be rolled directly to size, while still offering cost savings over seamless tubes. All our drawn tubes are bright annealed for superior finish and quality.

Daxun Advantages

• Extensive Range: From small to large diameter stainless steel pipes, we offer a comprehensive selection of sizes and grades, including 304L, 316L, 317L, 321, 310, 347, 2205, and more.
• Flexible Solutions: Whether you require seamless or welded steel pipes, our products are designed to meet your specific project demands. Our lengths are customizable to suit your precise requirements.
  Quality
• Stringent Standards: Our stainless steel pipes adhere to rigorous standards such as ISO9001, ABS, NSF/ANSI Standard 61, and NACE MR0175, ensuring superior reliability and performance.
• Custom Orders: Need special size stainless steel pipes? We offer an array of custom options at competitive prices with convenient online ordering to meet your unique specifications.

 

Stainless Steel Seamless Tube

Our stainless steel seamless tubes are expertly drawn from hollow sections created via piercing or hot extrusion processes. Ideal for large diameter-to-wall-thickness ratios, these tubes boast excellent external dimensional tolerances for precise applications.

Quality, Delivery, Inspection

• Daxun ensures strict quality assurance through a series of tests, including flattening tests, pitting and resistance tests, mechanical and hardness tests, material positive identification, and expansion tests. These assessments confirm that our materials meet the stringent requirements needed for their intended applications.
• During the meticulous production process at Jiangsu Daxun Alloy Co., Ltd., we precisely measure the diameter, thickness, and surface quality of our products. Our standard delivery time is remarkably swift, ranging from 7 to 15 days. However, for some specialized product sizes, the delivery timeline may extend to 20 days, ensuring every specification is perfectly met.
  Our delivery timeframes adhere strictly to the agreed-upon contract terms, ensuring reliability and consistency in every shipment.
• We welcome and fully support inspections by third-party customer agencies at our state-of-the-art manufacturing facilities.
• We offer complimentary samples to our valued customers for rigorous testing, ensuring complete satisfaction and assurance of product quality.
• We facilitate on-site as well as video factory inspections, providing transparency and confidence in our manufacturing processes.

 

 

Daxun's unparalleled stainless steel pipe manufacturing capabilities.

Our forming capabilities are cutting-edge, encompassing advanced extrusion and cold working techniques for producing top-tier tube and pipe products. We boast one of the world's largest pilger mills and employ unique hydroforming processes to manufacture superior fittings.

 

Explore Daxun's extensive pipe processing capabilities.

As a vertically integrated manufacturer, Daxun offers a comprehensive one-stop shop solution. We adeptly handle a range of services, whether it's an entire project or a specific machining job. Our capabilities include Straightening, Drilling, Honing, Trepanning, Cutting, Testing, Boring, Machining, Laser Welding, Polishing, Turning, and Specialized Services.

 

Discover Bigger, Better Pipe Solutions with Daxun.

Equipped with vertical and horizontal presses ranging from 12,000 to 35,000 tons, Daxun boasts the most comprehensive pipe extrusion capabilities worldwide. This enables us to produce the longest lengths and largest diameter pipes in the industry, setting new benchmarks for excellence.

 

Daxun is a trusted supplier to the power generation sector, providing essential components such as ductwork, boiler tubes, main steam tubes, thermal reheat tubes, flue gas desulfurization units, and other critical products for nuclear, coal-fired, renewable energy, and combined cycle applications.

Packaging & Shipping

Company Profile

 

Chemical composition of 321 stainless steel pipe

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
*** (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%

 

Mechanical properties of 321 stainless steel pipe

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	-

 

321 stainless steel pipe ALL EQUIVALENT

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

 

Certifications

Premier Stainless Steel Tube and Pipe Suppliers in China

GENERAL PROPERTIES

• 321 Stainless Steel Pipe (UNS S32100) is a titanium-stabilized, austenitic stainless steel known for its excellent overall corrosion resistance. It shows high resilience to intergranular corrosion after exposure to chromium carbide precipitation temperatures of 800 - 1500°F (427 - 816°C). With oxidation resistance up to 1500°F (816°C), it boasts superior creep and stress rupture properties over 304 and 304L steel pipes. Moreover, it delivers exceptional toughness even at low temperatures.
• Stainless Steel Tube 321H (UNS S 32109) is a variant with higher carbon content (0.04 - 0.10) engineered for enhanced creep resistance and strength at temperatures exceeding 1000°F (537°C). Often, the carbon content facilitates dual certification.
• Alloy 321 can be strengthened exclusively through cold working, not heat treatment. It is highly weldable and can be processed using conventional shop fabrication methods.

COMMON APPLICATIONS

• Aerospace - piston engine manifolds
• Chemical Processing
• Expansion Joints
• Food Processing - equipment and storage
• Petroleum Refining - polythionic acid service
• Waste Treatment - thermal oxidizers

ASTM/ASTM : UNS S32100

CORROSION RESISTANCE

• Provides excellent general corrosion resistance comparable to 304.
• Engineered for use within the chromium carbide precipitation range of 1800 - 1500°F (427 - 816°C).
• Suitable for most diluted organic acids at moderate temperatures.
• Compatible with pure phosphoric acid at lower temperatures.
• Effective in up to 10% diluted solutions at elevated temperatures.
• Resists polythionic acid stress corrosion cracking in hydrocarbon service.
• Used in chloride-free or fluoride-free caustic solutions at moderate temperatures.
• Not suitable for chloride solutions, even in low concentrations, or in sulfuric acid service.

PROCESSING

Alloy 321/H is easily welded and processed using standard shop fabrication techniques.

HOT FORMING

• Recommended working temperatures for forging, upsetting, and other hot work are 2100 - 2300°F (1149 - 1260°C).
• Not suitable for work below 1700°F (927°C).
• Material should be water quenched or fully annealed post-working to regain maximum corrosion resistance.

COLD FORMING

• Very ductile and easy to form.

WELDING

• Easily welded using most standard welding techniques.
• Post-weld heat treatment is not required.

MACHINING

• The hardening rate of 321 makes it less machinable than 410 stainless steel yet similar to 304.

Why choose Stainless Steel Pipe 321, 321H, UNS S32100, UNS S32109, WNR 1.4541, WNR 1.4878 stainless steel pipes and tubes manufactured by Daxun? Because we offer exceptional quality, durability, and performance tailored to your specific needs.

• Short Lead Time - With unparalleled speed, we deliver top-tier 321/321H Stainless Steel Pipes and Tubes services, ensuring you receive the highest quality in record time.
• Customized Sizes: Whether standard or bespoke, our capabilities in processing Stainless Steel 321/321H Tubes allow us to meet your exact specifications with precision.
• Best Prices: Our competitively priced 321/321H Stainless Steel Pipes offer exceptional value, making premium quality accessible to all.
  Quality Products: We guarantee the excellence of our SS 321/321H Pipes and Tubes, prioritizing quality above all else.
  Full Certifications: Each of our products is backed by comprehensive certification, including Mill TC, Test Reports, and Hydrostatic Tests from NABL-approved laboratories.
• Fittings and Flanges: As manufacturers of 321 Forged Fittings, 321 Butt Weld Fittings, 321 Compression Ferrule Fittings, and 321/321H Flanges, we offer the convenience of sourcing all your requirements from one trusted vendor.

Features it possesses

• Since SS321/SS321H stainless steel welded pipe is crafted from pure stainless steel alloy, it exhibits remarkable properties like unmatched durability, flexibility, toughness, and a long service life. It boasts high tensile strength, superior dimensional accuracy, and an excellent surface finish. Additionally, it offers enhanced resistance to pitting, corrosion, oxidation, stress corrosion cracking, and crevice corrosion.

Testing

• We conduct rigorous testing, including Positive Material Identification, Intergranular Corrosion, Pitting Resistance, Mechanical, Chemical, Macro/Micro, and Flattening/Flaring tests, ensuring the utmost reliability.

Documents provided-

• Essential documents such as Heart Treatment Charts, Quality Assurance Plans, Commercial Invoices, Certificates of Origin, Raw Material Test Reports, and Material Traceability Reports are provided. Additionally, MTC as per EN 10204/3.1B, TC including Radiography Test Reports, and Third Party Test Reports are available for comprehensive verification.