ASTM A312/A269 TP321 Pickled And Annealed Stainless Steel Seamless Pipe

If you are looking for TP321 stainless steel seamless pipe conforming to ASTM A312/A269 standards, Gnee offers high-quality pickled and annealed TP321 seamless pipe with excellent corrosion resistance and high-temperature stability. All pipes are manufactured to ASTM A312 and A269 standards, ensuring optimal performance in chemical, petrochemical, and heat exchanger applications.

 

What is ASTM A312/A269 standard TP321 stainless steel seamless pipe?

TP321 stainless steel (UNS S32100 / EN 1.4541) is a titanium-stabilized austenitic stainless steel. The addition of titanium enhances its resistance to intergranular corrosion and improves its strength under continuous high-temperature operation. Pickling and annealing ensures a clean, smooth, and oxide-free pipe surface, making it suitable for sanitary, high-purity, and heat exchange systems.

 

What does "Pickled and Annealed" mean?
"Pickled" refers to the acid treatment that removes oxide scales and impurities from the steel surface. "Annealed" means the pipe has been heat-treated to improve its mechanical strength, ductility, and corrosion resistance.

 

ASTM A312/A269 TP321 Pickled And Annealed Seamless Pipe in stock

Property	Specification
Standard	ASTM A312 / ASTM A269
Grade	TP321 (UNS S32100 / EN 1.4541)
Manufacturing Type	Seamless
Surface Finish	Pickled & Annealed
Outside Diameter (OD)	6 mm – 630 mm
Wall Thickness	0.5 mm – 20 mm
Length	5.8 m, 6 m, or custom
Tensile Strength (MPa)	515 – 750
Yield Strength (MPa)	≥ 205
Elongation (%)	≥ 35
Hardness (HB)	≤ 217
Density (g/cm³)	7.9
Max Service Temperature (°C)	870°C continuous, 925°C intermittent
End Type	Plain, beveled, or threaded
Packaging	Plastic caps + wooden box / steel pallet

 

What is the difference between TP321 and TP304 stainless steel?
TP321 contains titanium, which provides better resistance to intergranular corrosion and higher temperature strength than TP304, especially in welded or continuously heated conditions.

 

Is TP321 suitable for marine or acidic environments?
TP321 performs well in oxidizing and mildly corrosive environments. For highly saline or chloride-rich conditions, 316L or 316Ti is more suitable.

 

Can TP321 stainless steel pipes be welded easily?
Yes, TP321 can be welded using TIG, MIG, or plasma welding without risk of carbide sensitization, thanks to titanium stabilization.

 

TP321 Stainless Steel Seamless Pipe Price per kg
The price of TP321 stainless steel seamless pipe typically ranges from $6.50 to $9.80 per kilogram, depending on the pipe's outer diameter, wall thickness, surface treatment, and origin. For example, a bulk order of 2-inch SCH40 TP321 seamless pipe, after annealing and pickling, costs approximately $7.20 per kilogram. Polished or thick-walled pipes may be more expensive due to the additional processing steps and higher material density required. Email: sales@gneestainless.com

 

Why Choose Gnee for TP321 Stainless Steel Pipes
Over 18 years of stainless steel export experience
Large inventory of ASTM A312/A269 TP321 seamless pipes
Custom cut-to-length, polishing, and beveling services
Certified quality: ISO 9001, SGS, BV, and MTC 3.1
Served over 60 countries worldwide
Availability: In stock for immediate dispatch
MOQ: 1 ton or per order requirement
Delivery Time: 7–15 working days
Trade Terms: EXW / FOB / CIF / CFR
Inspection: 100% tested with hydrostatic and eddy current testing
Certificates: EN 10204 3.1 / ISO / SGS / BV
All TP321 pipes supplied by Gnee conform to ASTM A312/ASME SA312 standards and undergo 100% dimensional accuracy, hydrostatic, and corrosion performance testing to ensure stable and reliable quality and a long service life.