ASTM A358 TP321 Class1 Welded Stainless Steel Pipe For High Temperature

GNEE is a leading supplier, distributor, and manufacturer of ASTM A358 Grade 321 EFW pipes. We provide ASME SA358 TP 321 stainless steel EFW pipes for industrial applications such as aircraft exhaust manifolds, furnace components, and heat exchangers. We can supply ASTM A358 Grade 321 welded pipes in customized dimensions and specifications according to customer requirements based on standards such as ASTM, ASME, and other equivalent specifications.

 

We consistently supply high-quality ASTM A358 TP321 stainless steel EFW pipes, welded through all fusion welding and resistance welding processes. Specifically designed for high-temperature and corrosive environments, they are less prone to intergranular corrosion after heating within the carbide precipitation temperature range of 425-850°C, making them the preferred stainless steel for applications up to approximately 900°C. The weld seam of ASTM A358 321 EFW pipes is continuously polished using an automatic pearlescent polishing machine to form a perfect inner bore.

 

ASME SA358 Gr.321 stainless steel EFW pipes are widely used in industries such as oil and gas, petrochemicals, chemicals, machinery manufacturing, and automotive. A358 Gr 321 stainless steel welded pipes undergo rigorous testing for multiple parameters including strength, durability, temperature resistance, and pressure resistance.

 

ASTM A358 Stainless Steel 321 EFW Pipe Specification

Specification	ASTM A358 / ASME SA358
Specification	A / SA358 CLASS 1, A / SA358 CLASS 2, A / SA358 CLASS 3, A / SA358 CLASS 4, A / SA358 CLASS 5
Grades	304, 304L, 304H, 309S, 310S, 316, 316L, 316H, 317L, 321, 321H, 347, 347H, 904L ETC.
Type	EFW, ELECTRIC FUSION WELDED
Outer Diameter Size	Electric Fusion Welded / ERW- 8" NB To 110" NB (Nominal Bore Size)
Wall Thickness	Schedule 10 To Schedule 160 (3 mm to 100 mm Thickness)
Length	01 Meter to 12.5 Meters, Single Random Length, Double Random Length And Customize Size.
Ends	Plain Ends / Beveled Ends
Delivery Conditions	As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered
Dimension	All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME
Value Added Services	Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Heat Treatment

 

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Chemical Composition

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 - 19.00	0.10 max	9.00 - 12.00	5(C+N) – 0.70 max
SS 321H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 - 19.00	0.10 max	9.00 – 12.00	4(C+N) – 0.70 max

 

Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1457 °C (2650 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

 

Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS	JIS	EN
SS 321	1.4541	S32100	SUS 321	X6CrNiTi18-10
SS 321H	1.4878	S32109	SUS 321H	X12CrNiTi18-9

 

 

Application

Heat Exchanger & Boiler,Oil & Gas Refining,Petrochemical Industry,Water Treatment,Onshore & Offshore Platform, Ship building,Electric Plant, Sugar Plant, Paper making factoryOthers.

 

If you have project requirements for 321 stainless steel welded pipe, please feel free to place an order. GNEE maintains a large inventory of popular products for you to choose from. Available in both hot-rolled and cold-rolled forms, contact our factory for detailed chemical composition and free samples. We offer competitive pricing and excellent service.

Packaged in waterproof paper and steel strapping, these products meet standard export seaworthy packaging requirements and are suitable for various shipping methods. Custom packaging is also available upon request.