321 Stainless Steel Tube ASTM A213 High Weldability Od 6.35mm-355.6mm Used in Food Processing 321 Stainless Steel Pipe

• Customization: Available
• Type: Stainless Steel Pipes
• Standard: ASTM, AISI, GB, JIS, EN
• Model NO.: 321 Stainless Steel pipe
• 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

ASTM A312 / A358 Stainless Steel 321 Pipe Supplier; 321 / 321H Stainless Steel Seamless Pipe. Reach out to us for ASME SA312 321 Stainless Steel Pipe inquiries and orders.

Type 321 stainless steel, an austenitic grade, shares similar properties with Type 304 but includes increased titanium and carbon content. This composition enhances corrosion and oxidation resistance and provides exceptional toughness, even at cryogenic temperatures. The titanium in 321 stainless steel prevents harmful carbide precipitation in the weld's heat-affected zone (HAZ), offers partial protection against intergranular corrosion, and reduces embrittlement in high-risk weld areas. 321H stainless steel is ideal for applications subject to carbide precipitation temperatures (800°F-1500°F) and corrosive environments. Unlike 304 stainless steel, Type 321 contains more nickel and is stabilized with titanium. The titanium interacts preferentially with carbon, preventing chromium carbide formation at grain boundaries, thereby preserving corrosion resistance at critical temperatures. This grade hardens effectively with cold working and is easily weldable, usually not requiring post-weld annealing to maintain its superior performance in various corrosive conditions.

Stainless Steel Welded Tubes

Our stainless steel tubular products are crafted from stainless steel strips that are roll-formed and fusion-welded along the longitudinal seam. Daxun's welding process uses no filler metal, ensuring a clean and efficient weld.

Quick response

• Excellent formability and weldability
• Operates efficiently at temperatures up to 900°C
• Resistant to acids, alkalis, and low temperatures
• Responds favorably to cold work hardening
• Outstanding 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 the final size. This process is ideal for producing thick-walled, large-diameter tubes that cannot be rolled directly to size, offering cost savings over seamless tubes. All stainless steel drawn tubes undergo bright annealing.

Daxun Advantages

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

 

Stainless Steel Seamless Tube

Our stainless steel tubular products are drawn from the hollow section of the tube, created through piercing or hot extrusion processes. Stainless steel seamless tubes are ideal for applications requiring large diameter-to-wall thickness ratios and offer excellent external dimensional tolerances.

Quality, delivery, inspection

• Daxun conducts rigorous quality assurance tests, including flattening, pitting and resistance, mechanical, hardness, material positive identification, and expansion tests. These tests ensure the material's suitability for its intended application.
• During our meticulous production process, we ensure precision by measuring the diameter, thickness, and surface quality of each product. Our standard delivery time ranges from 7-15 days. For some specialized sizes, this period extends to 20 days, reflecting our commitment to bespoke manufacturing.
  Our delivery timelines are unwaveringly aligned with contractual agreements, ensuring reliability and trust in every transaction.
• We welcome third-party agency inspections at our factory, providing transparency and assurance to our esteemed customers.
• We offer free samples to our customers for rigorous testing, underlining our confidence in product quality.
• We support both on-site and video inspections of our factory, ensuring complete transparency in our operations.

 

 

Daxun's Exceptional Stainless Steel Pipe Manufacturing Capabilities

Our forming capabilities are unparalleled, featuring state-of-the-art extrusion and cold working techniques, one of the world's largest pilger mills, and unique hydroforming processes for superior fittings manufacturing.

 

Daxun's Advanced Pipe Processing Capabilities

As a vertically integrated manufacturer, Daxun offers a comprehensive one-stop-shop experience. We handle entire projects or specific machining tasks, including Straightening, Drilling, Honing, Trepanning, Cutting, Testing, Boring, Machining, Laser Welding, Polishing, Turning, and Specialized Services.

 

Bigger, Better Pipe Solutions Tailored for Excellence

With vertical and horizontal presses ranging from 12,000 tons to 35,000 tons, Daxun boasts the world's most comprehensive pipe extrusion capabilities, enabling us to produce the longest lengths and largest diameters in the industry.

 

Daxun supplies the power generation market with an array of products, including ductwork, boiler tubes, main steam tubes, thermal reheat tubes, and flue gas desulfurization units for nuclear, coal-fired, renewable energy, and combined cycle applications.

Packaging & Shipping

Company Profile

 

Chemical composition of 321 stainless steel pipe: The 321 stainless steel pipe, a marvel of metallurgical engineering, boasts a meticulously balanced chemical composition. Enhanced with titanium, it ensures exceptional resistance to intergranular corrosion. The combination of chromium and nickel fortifies its structure, providing unmatched durability and longevity, making it ideal for a plethora of demanding applications.

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: Our 321 stainless steel pipes are designed to meet the highest standards of mechanical excellence. Exhibit superior tensile strength, remarkable yield strength, and outstanding elongation. These pipes promise unparalleled performance under the most extreme conditions, ensuring reliability and endurance in every use case, from aerospace pipelines to high-stress industrial environments.

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: Discover the exceptional versatility of our 321 stainless steel pipes, which are meticulously engineered to match or exceed the performance of all equivalent materials in the market. Whether you are looking for alternatives in terms of corrosion resistance, mechanical robustness, or application-specific requirements, our 321 stainless steel pipes stand as a premium choice to fulfill diverse industrial needs.

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 Suppliers of Stainless Steel Tubes and Pipes in China

GENERAL PROPERTIES

• 321 Stainless Steel Pipe (UNS S32100) boasts titanium stabilization and offers robust overall corrosion resistance. It excels in countering intergranular corrosion, even after enduring the chromium carbide precipitation temperature range of 800 - 1500°F (427 - 816°C). This alloy stands firm against oxidation up to 1500°F (816°C) and surpasses 304 and 304L in terms of creep and stress rupture properties. Additionally, it retains commendable low-temperature toughness.
• Stainless Steel Tube 321H (UNS S32109) is an enhanced carbon content variant (0.04 - 0.10) of the alloy, engineered for superior creep resistance and strength at temperatures exceeding 1000°F (537°C). This increased carbon content often allows the plate to achieve dual certification.
• Alloy 321 can only be toughened through cold working, not heat treatment. Its compatibility with typical shop fabrication techniques ensures easy welding and processing.

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/ASTE : UNS S32100

CORROSION RESISTANCE

• Exhibits excellent general corrosion resistance, comparable to 304 stainless steel.
• Engineered to perform in the chromium carbide precipitation range of 1800 - 1500°F (427 - 816°C).
• Suitable for use in most diluted organic acids at moderate temperatures.
• Applicable in pure phosphoric acid at lower temperatures.
• Effective in up to 10% diluted solutions at elevated temperatures.
• Resistant to polythionic acid stress corrosion cracking in hydrocarbon service.
• Utilizable in chloride or fluoride-free caustic solutions at moderate temperatures.
• However, it underperforms in chloride solutions, even at minimal concentrations, and in sulfuric acid service.

PROCESSING

Alloy 321/H can be effortlessly welded and processed using standard shop fabrication practices.

HOT FORMING

• Recommended working temperatures range from 2100 - 2300°F (1149 - 1260°C) for forging, upsetting, and other hot working operations.
• This alloy is unsuitable for operations at temperatures below 1700°F (927°C).
• Post-working, materials must be water quenched or fully annealed to regain maximum corrosion resistance.

COLD FORMING

• Highly ductile and easily formed.

WELDING

• Compatible with most standard welding processes.
• Post-weld heat treatment is unnecessary.

MACHINING

• Its hardening rate renders Alloy 321 less machinable than 410 stainless steel but on par with 304.

Why opt for Stainless Steel Pipe 321, 321H, UNS S32100, UNS S32109, WNR 1.4541, WNR 1.4878 pipes and tubes from Daxun? Because Jiangsu Daxun Alloy Co., Ltd. guarantees superior quality and unmatched performance, making them the ideal choice for your demanding applications.

• Short Lead Time - Experience unmatched efficiency with our top-notch 321/321H Stainless Steel Pipes and Tubes services, delivered with unparalleled speed and quality.
• Customized Sizes - Tailored to Your Needs: Our expertise allows us to manufacture and supply both standard and bespoke 321/321H Stainless Steel Tubes, perfectly suited to your specific requirements.
• Best Prices - Unbeatable Value: Enjoy highly competitive pricing on our superior 321/321H Stainless Steel Pipes, ensuring you receive the best value for your investment.
  Quality Products - Excellence Guaranteed: We are committed to maintaining the highest quality standards for our SS 321/321H Pipes and Tubes, ensuring reliability and performance.
  Full Certifications - Complete Assurance: Our products come with comprehensive certification, including Mill TC, Test Reports, and Hydrostatic Tests from NABL approved labs, providing you with full confidence in our quality.
• Fittings and Flanges - One-Stop Solution: As a leading manufacturer, we offer 321 Forged Fittings, 321 Butt Weld Fittings, 321 Compression Ferrule Fittings, and 321/321H Flanges, providing a convenient single-source solution for all your needs.

Features It Possesses - Exceptional Attributes: Our SS321/SS321H stainless steel welded pipes boast outstanding features such as exceptional durability, flexibility, toughness, along with high tensile strength and dimensional accuracy. These pipes offer excellent surface finish and superior resistance against pitting, oxidation, stress corrosion cracking, and crevice corrosion.

• Since SS321/SS321H stainless steel welded pipe is made of pure stainless steel alloy, it has many excellent properties. Such as durability, flexibility, toughness, high durability, long service life, high tensile strength, high dimensional accuracy, good surface finish, etc. In addition, it also has stronger resistance to pitting, corrosion, oxidation, stress corrosion cracking and crevice corrosion.

Testing - Rigorous Quality Checks: Our products undergo a series of stringent tests including positive material identification, intergranular corrosion, pitting resistance, mechanical and chemical tests, as well as macro/micro analysis, and flattening/flaring tests to ensure top-tier quality.

• Positive material identification test, intergranular corrosion test, pitting resistant test, mechanical test, chemical test, macro/micro test, flattening/flaring test are tests conducted.

Documents Provided - Full Transparency: We offer a comprehensive suite of documentation, including heart treatment charts, quality assurance plans, commercial invoices, certificates of origin, raw material test reports, and material traceability reports. Additionally, we provide MTC as per EN 10204/3.1B, TC reports such as radiography test reports, and third-party test reports.

• Heart treatment chart, quality assurance plan, commercial invoice, certificate of origin, raw material test report, material traceability report etc are a few essential documents provided to the buyers. Additionally, the other documents like MTC as per EN 10204/3.1B, TC like radiography test report and the third party test report are provided.