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Heat Exchanger Tube

GOST 9941 12X18H12T / ANSI 321 / 1.4541 Stainless Steel Seamless Tube Petrochemical Industry

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Ms. Vivi Zhao

vivi@steelseamlesspipe.com

+8613023766106

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GOST 9941 12X18H12T / ANSI 321 / 1.4541 Stainless Steel Seamless Tube Petrochemical Industry

Brand Name:	YUHONG
Model Number:	GOST 9941 12X18H12T Stainless Steel Seamless Tube
MOQ:	1000kgs
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Payment Terms:	L/C,T/T

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

CHINA

Certification:

ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Product Name:

Stainless Steel Seamless Tube

Standard:

GOST 9941-81

Material:

12X18H12T / ANSI 321 / 1.4541

1/4" , 3/8", 1/2", 5/8", 3/4", 1", 1.1/4", Etc.

Thickness:

BWG10-25

Length:

Can Custom

Plain End, Beveled End

Highlight:

GOST 9941 12X18H12T Stainless Steel Seamless Tube, Heat Exchanger Tube

Product Description

GOST 9941 12X18H12T / ANSI 321 / 1.4541 Stainless Steel Seamless Tube Petrochemical Pipeline Use

GOST 9941 12X18H12T Seamless Tube is a cold-worked or warm-worked seamless stainless steel tube manufactured according to the Russian GOST 9941 standard. The steel grade 12X18H12T is a chromium-nickel austenitic stainless steel stabilized with Titanium, equivalent roughly to AISI 321 or 304H in Western standards. Its primary advantage is its resistance to intergranular corrosion after welding and its good strength at elevated temperatures. It is the Russian equivalent of AISI 321H (UNS S32109) and is typically used for heat exchangers, furnace piping, and superheater tubes in refineries and power plants.

International Comparisons (Equivalents)

If you need to replace this tube with a Western standard or source a modern equivalent, here is the mapping:

AISI / ASTM (USA): AISI 321 (Grade 321) is the closest direct equivalent due to the Titanium stabilization.
- Note: The specific H grade (ASTM A213 Grade TP321H) is actually a closer match for the carbon content. AISI 321H has a controlled carbon range of 0.04-0.10%, whereas 12X18H12T allows up to 0.12%. For high-temperature applications, TP321H is the best Western substitute.
EN / DIN (Europe): 1.4878 (X12CrNiTi18-9) or 1.4541 (X6CrNiTi18-10).
- 1.4541 is the more common standard stabilized grade, though it typically has lower carbon (max 0.08%) than the Russian grade. 1.4878 is specifically for high-temperature applications.
UNS (Unified Numbering System): S32109 (for 321H).

Chemical Composition % GOST 9941-81 12X18H12T Stainless Steel Seamless Tube

C	Si	Mn	Cr	Ni	S	P	Ti
≤0.12%	≤0.8%	1.00%-2.00%	17.0%-19.0%	11.0%-13.0%	≤0.02%	≤0.03%	0.50%-0.70%

GOST 9941-81 12X18H12T Stainless Steel Seamless Tube Mechanical Properties

Steel Grade	Point of max. load N/mm² (kgd/mm²)	Elongation %	Density g/cm³
12X18H12T	549 (56)	35	7.90

Application

Petrochemical and Refining:
- Furnace Tubes: Used in heaters and reformers where the tube wall is exposed to flame and process temperatures.
- Heat Exchangers: Specifically in the hot sections where cooling fluids or gases are passed.
Power Generation:
- Superheater and Reheater tubes in boilers (though modern ultrasupercritical plants may require higher grades).
- Piping for hot steam lines.
Chemical Industry:
- Transporting nitric acid, organic acids, and other corrosive media.
- Piping in urea production (though specific grades like 316L are sometimes preferred for certain steps).
Aerospace and Engineering:
- Exhaust systems for engines.
- Manifolds and ducting for hot gases.

Ratings & Review

Overall Rating

4.3

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

33%

4 stars

67%

3 stars

2 stars

1 stars

All Reviews

Ahmed Al-Rashid

Kuwait Mar 3.2026

Helpful (2)

Tube ends were clean, dimensions consistent. Our crew didn't run into fit-up issues.

S*.

Thailand Jan 19.2026

Helpful (9)

Very professional team, easy to talk to. We had some specific size requirements and they nailed it. The TP304 stainless tube with aluminum fins works like a charm for heat dissipation. Thumbs up!

Rajesh Kumar

India Apr 19.2025

Helpful (3)

Cost and reliability are key for Indian refineries. We installed these fin tubes in Mumbai’s cooling towers, achieving 16% energy savings versus local suppliers. ASTM A213 T11 compliance ensured no failures during monsoon humidity (90%+ RH), and the low price saved $8K upfront.

Tags:

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

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Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

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Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

products details

Studded Tube

Solid Fin Tube

Serrated Finned tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube