321 Stainless Steel Tube ASME SA312 High Strength Od 6.35mm-508mm for Petrochemical Equipment 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

ASTM A312 / A358 Stainless Steel 321 Pipe Supplier: High-Quality 321 / 321H Stainless Steel Seamless Pipes. Contact us for ASME SA312 321 Stainless Steel Pipes today.

Type 321 stainless steel is an austenitic steel that excels in corrosion and oxidation resistance. It boasts a higher titanium and carbon content than Type 304, providing exceptional toughness even at cryogenic temperatures. The titanium in 321 stainless steel prevents harmful carbide precipitation in the heat-affected zone (HAZ) of the weld and offers partial protection against intergranular corrosion. It also reduces embrittlement in high-risk areas of the weld. Commonly used in applications exposed to carbide precipitation temperatures (800°F-1500°F) and corrosive environments, 321 stainless steel is identical to 304 stainless steel but includes more nickel, stabilized with titanium. This interaction with carbon prevents the formation of chromium carbides at grain boundaries, maintaining corrosion resistance by minimizing chromium consumption near grain borders during exposure to critical temperatures. This grade hardens well with cold working, is easily weldable, and rarely requires post-weld annealing to retain its outstanding performance in various corrosive conditions.

Stainless Steel Welded Tubes

Daxun's stainless steel tubular products are roll-formed and fusion-welded along the longitudinal seam using a filler-free welding process, ensuring robust and durable construction.

Quick Response

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

 

Stainless Steel Drawn Tube

Stainless steel tubular products are rolled and then redrawn to their final size, ideal for producing thick-walled, large-diameter tubes that can't be rolled directly. This process offers cost savings over seamless tubes. All stainless steel drawn tubes are bright annealed for superior finish.

Daxun Advantages

• Variety: We offer a vast range of stainless steel pipe sizes and grades, from small to large diameters, including 304L, 316L, 317L, 321, 310, 347, 2205, and more.
• Flexibility: Whether you need seamless or welded steel pipes, our products are designed to meet your project's specific requirements.
  Quality
• Standards: Our stainless steel pipes adhere to stringent standards such as ISO9001, ABS, NSF/ANSI Standard 61, and NACE MR0175, ensuring reliability and top-notch performance.
• Custom Orders: Need special size stainless steel pipes? We offer a wide range 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, made by piercing or hot extrusion processes. The seamless tube is perfect for high diameter-to-wall thickness ratios and offers excellent external dimensional tolerances.

Quality, Delivery, Inspection

• Daxun conducts numerous quality assurance tests, including flattening, pitting and resistance, mechanical, hardness, material positive identification, and expansion tests. These rigorous evaluations ensure the material's suitability for its intended applications.
• Throughout our meticulous production process, we consistently ensure precise measurement of the diameter, thickness, and surface quality of our products. Typically, our standard delivery timeline ranges from 7 to 15 days. However, for certain specialized sizes, this period may extend up to 20 days to maintain the highest standards.
  Our commitment to punctuality is unwavering; we strictly adhere to the delivery schedules outlined in our contracts.
• We fully support third-party inspections, allowing customer agencies to visit our factory for thorough evaluations.
• We offer complimentary samples for testing, giving customers the confidence in the quality of our products.
• We facilitate both on-site and video inspections of our factory to ensure transparency and build trust.

 

 

Unveiling Daxun's Superior Stainless Steel Pipe Manufacturing Capabilities

Our forming capabilities are unrivaled, featuring cutting-edge extrusion and cold working technology for tube and pipe production. We boast one of the world's largest pilger mills and employ unique hydroforming processes to craft superior fittings.

 

Exploring the Extensive Pipe Processing Expertise of Daxun

As a vertically integrated manufacturer, Daxun offers a comprehensive suite of services and solutions, from complete project handling to specific machining tasks. Our extensive capabilities include Straightening, Drilling, Honing, Trepanning, Cutting, Testing, Boring, Machining, Laser Welding, Polishing, Turning, and a variety of Specialized Services.

 

Bigger, Better Pipe Solutions: Elevating Industry Standards

Daxun commands the industry's most extensive pipe extrusion capabilities, featuring vertical and horizontal presses with capacities ranging from 12,000 tons to an impressive 35,000 tons. This enables us to produce the longest and largest diameter pipes available.

 

Daxun is a key supplier to the power generation sector, providing essential components such as ductwork, boiler tubes, main steam tubes, thermal reheat tubes, and flue gas desulfurization units, catering to 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 Suppliers of Stainless Steel Tubes and Pipes in China

GENERAL PROPERTIES

• 321 Stainless Steel Pipe (UNS S32100) is a titanium-stabilized austenitic stainless steel renowned for its excellent corrosion resistance. It offers high resistance to intergranular corrosion after exposure to the chromium carbide precipitation temperature range of 800 - 1500°F (427 - 816°C). The alloy withstands oxidation up to 1500°F (816°C) and provides superior creep and stress rupture properties compared to 304 and 304L steel pipes. Additionally, it boasts good low-temperature toughness.
• Stainless Steel Tube 321H (UNS S32109) is a higher carbon variant (0.04 - 0.10) of the alloy. It is engineered for enhanced creep resistance and strength at temperatures exceeding 1000°F (537°C). The carbon content frequently allows for dual certification.
• Alloy 321 can only be hardened by cold working, not heat treatment. It is easily welded and processed using standard shop fabrication techniques.

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

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

PROCESSING

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

HOT FORMING

• Working temperatures of 2100 - 2300°F (1149 - 1260°C) are ideal for forging, upsetting, and other hot working processes.
• Not suitable for work at temperatures below 1700°F (927°C).
• Material must be water quenched or fully annealed after working to restore maximum corrosion resistance.

COLD FORMING

• Highly ductile and easy to form.

WELDING

• Easily welded by most standard processes.
• Post-weld heat treatment is not necessary.

MACHINING

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

Why choose Stainless Steel Pipe 321, 321H, UNS S32100, UNS S32109, WNR 1.4541, WNR 1.4878 manufactured by Daxun?

• Short Lead Time - We pride ourselves on providing rapid, high-quality services for our esteemed clients with the best speed in delivering 321/321H Stainless Steel Pipes and Tubes.
• Customized Sizes: We offer tailored processing to produce and supply both standard and non-standard Stainless Steel 321/321H Tubes, ensuring we meet every unique requirement.
• Best Prices: Our 321/321H Stainless Steel Pipes are priced to be highly competitive, offering excellent value without compromising on quality.
  Quality Products: We are committed to ensuring the highest quality for our SS 321/321H Pipes and Tubes, adhering to rigorous standards at all times.
  Full Certifications: Each product comes fully certified, including Mill TC, Test Reports, and Hydrostatic Tests, verified by NABL approved labs.
• Fittings and Flanges: As a leading manufacturer, we provide 321 Forged Fittings, 321 Butt Weld Fittings, 321 Compression Ferrule Fittings, and 321/321H Flanges, offering a one-stop solution for all your needs.

Outstanding Features

• Our SS321/SS321H stainless steel welded pipe stands out due to its pure stainless steel alloy, offering remarkable durability, flexibility, toughness, long service life, high tensile strength, precise dimensions, and excellent surface finish. It also boasts enhanced resistance to pitting, corrosion, oxidation, stress corrosion cracking, and crevice corrosion.

Comprehensive Testing

• We conduct a series of rigorous tests including positive material identification, intergranular corrosion, pitting resistance, mechanical, chemical, macro/micro, and flattening/flaring tests.

Essential Documentation

• We provide an array of vital documents such as the heat treatment chart, quality assurance plan, commercial invoice, certificate of origin, raw material test report, and material traceability report. Additionally, we offer MTC as per EN 10204/3.1B, radiography test reports, and third-party test reports.