Stainless Steel 321H Pipe | ASTM A312 TP 321H Tubes

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Trusted Ex-Stock

Dammam • Jubail • Riyadh

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SABIC and ADNOC

Approved Vendor Status

EN 10204 3.1 MTC

TPI • NACE MR0175

2-Day Delivery KSA

From UAE Ex-Stock

High-Temp Rated

427°C – 816°C Range

Stainless Steel 321H Pipe Product Overview

Standard: ASTM A312, A213, A249, A269 / ASME SA312
Grade: TP 321H / UNS S32109 / DIN 1.4878 / WNR 1.4878
Other Designations: AISI 321H, SUS 321H, INOX 321H, SUS321H
Pipe Types: Seamless (SMLS), Welded (ERW / TIG / SAW)
Size Range (Seamless): 1/8″ to 24″ OD (SCH 5S to SCH 160)
Wall Thickness: SCH 5 to SCH 160 and Heavy Wall
Temperature Range: 427°C to 816°C (800°F to 1500°F)
Pipe Ends: Plain End (PE), Beveled End (BE), Threaded
Surface Finish: Annealed and Pickled (AP), Bright Annealed (BA)
Origin: Japan, Korea, Europe (Germany, Italy), India, USA
MTC: EN 10204 3.1 / 3.2, NABL Lab Reports, TPI
RFQ: contact@pipingmaterial.sa

ASTM A312 TP 321H Tubes suitable for Petrochemical Refineries

Stainless Steel 321H Pipe is a titanium-stabilised austenitic stainless steel pipe designed for continuous high-temperature service between 427°C and 816°C. The "H" designation signifies a higher carbon content (0.04–0.10%) compared to standard 321, SS 321H tubes the preferred specification for steam superheater headers, petrochemical reformer tubes, and refinery heat exchangers across the GCC region. pipingmaterial.sa connects Saudi buyers directly with SS 321H pipe stockists in Saudia.

Table of Content

Technical Specification of Stainless Steel 321H Pipe
Customized Sizes for SUS 321H ERW Pipe
Common Types of Stainless Steel 321H Pipe & Tube
SUS 321H Stainless Steel Rectangular Pipe Chemical Composition
Mechanical Properties for 321H SS Rectangular Tube
1.4878 Stainless Steel Tube Physical Properties
SS AISI 321H Welded Tube Testing Methods
SS 321H Pipe and Tube American and European Standard
Stainless Steel 321H Pipe Weight Chart

Schedule Chart of UNS S32109 EFW pipe
WNR 1.4878 Pipe Temperature Ranges
In Which Industrial Sector SUS 321H ERW Pipe Used ?
HSN Code for Stainless Steel 321H Pipe
ADNOC, Saudi Aramco, SABIC and GCC Approved Suppliers of 321H Pipe
Equivalent Grades SS 321H Pipe by Country
Applications of WNR 1.4878 Stainless Steel 321H Pipe
SS 321H Pipe Pricing and Delivery Info for Saudi Arabia

Supplied To:

Al Khobar Ras Al-Khair Tabuk Dhahran Dammam Al Jubail Riyadh Jeddah YanbuRabigh Sudair

Provide:

Saudi Aramco Approved ADNOC Approved SABIC Approved EN 10204 3.1 MTC NACE MR0175 Ex-Stock Saudi Arabia

Heavy wall ASTM A249 321H Stainless Steel Tube stock in Saudi Arabia

Technical Specification of Stainless Steel 321H Pipe

Find Stainless Steel 321H Pipe Suppliers in Saudi Arabia Who Supply Custom Sizes

SS 321H Seamless Pipe Sizes

Thickness (Seamless):0.6 -12.7 mm
Thickness(Welded):0.8 - 12.7 mm
Form: Round, Square, Rectangle

Sizes of 321H Stainless Steel Tube

Thickness (Seamless): .010 to .250"
Thickness(Welded): .005 to .500"
Form: Hydraulic, Coil, Straight

SS 321H Thick Walled Pipe Sizes

Outside Diameter: 10-600mm
Wall Thickness: 2.5 - 100mm
Length: 0.5- 12 meter

Sizes of SUS 321H Capillary Tube

Outside Diameter:0.4 to 16 mm
Wall Thickness:0.1 to 3 mm
Length:0.5 to 12 meter

UNS S32109 Coil Tube Sizes

Outside Diameter:0.4 to 16 mm
Wall Thickness:0.1 to 3 mm
Length:50 to 1000 mm

DIN 1.4878 Round Pipe End

Threaded
Bevelled
Plain, Grooved

Services of 1.4878 Stainless Steel Round Tube

Polishing
Beveling
Threading

321H SS Rectangular Tube Testing

PMI Testing
Hardness Test
Chemical/Flattening Test

Packaging of SS 321H Seamless Tube

Wooden Boxes
Steel Strips Bundled
Bubble Wraps, Custom

Customized Sizes for SUS 321H ERW Pipe

Nominal Sizes In Inch	Outside Diameter (O.D.)		Wall Thck.		Weight
Nominal Sizes In Inch	Inch	mm	mm	Inch	lb/ft	kg/m
24	24.000	610.0	5.54	0.218	55.85	83.11
22	22.000	559.0	4.78	0.188	44.18	65.75
1/2	0.840	21.3	1.65	0.065	0.54	0.80
12	12.750	323.9	3.96	0.156	21.13	31.44
18	18.000	457.0	4.19	0.165	31.64	47.09
2 1/2	2.875	73.0	2.11	0.083	2.49	3.71
14	14.000	355.6	3.96	0.156	23.22	34.56
3/4	1.050	26.7	1.65	0.065	0.69	1.03
30	30.000	762.0	6.35	0.250	80.02	119.09
3	3.500	88.9	2.11	0.083	3.05	4.54
5	5.563	141.3	2.77	0.109	6.40	9.52
8	8.625	219.1	2.77	0.109	9.99	14.87
1	1.315	33.4	1.65	0.065	0.87	1.30
1 1/4	1.660	42.2	1.65	0.065	1.12	1.66
10	10.750	273.1	3.4	0.134	15.29	22.76
6	6.625	168.3	2.77	0.109	7.65	11.38
3 1/2	4.000	101.6	2.11	0.083	3.50	5.21
1 1/2	1.900	48.3	1.65	0.065	1.28	1.91
2	2.375	60.3	1.65	0.065	1.61	2.40
16	16.000	406.4	4.19	0.165	28.11	41.83
4	4.500	114.3	2.11	0.083	3.95	5.88
20	20.000	508.0	4.78	0.188	40.12	59.70

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ADNOC Approved Stainless Steel 321H Pipe Suppliers in Saudi Arabia, send your RFQ and get quotes from Trusted stockists today.

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Common Types of Stainless Steel 321H Pipe & Tube

Find Stainless Steel 321H Pipe Traders in Saudi Arabia offering precision and durability in every materials delivered

Stainless Steel 321H Seamless Pipe

ASTM A312 TP 321H / ASME SA312
OD 1/8″ to 24″, SCH 5S to XXS
Titanium stabilized — superior strength

321H Stainless Steel Welded Pipe

ASTM A312 TP 321H Welded
OD 1/4″ to 24″, SCH 10S to 80S
Oil & gas and petrochemical applications

SS 321H Seamless Tube

ASTM A213 TP 321H Seamless
Boiler & superheater applications
High-temperature service rated

AISI 321H Welded Tube

ASTM A249 TP 321H Welded
Heat exchanger & condenser service
Size range up to 24″ OD

SUS 321H ERW Pipe

Electric Resistance Welded construction
ASTM A312 TP 321H ERW
Cost-effective for large diameter

INOX 321H ERW Tube

EN 10216-5 / DIN 17456 321H
Petrochemical & refinery grade
Fully annealed & pickled finish

UNS S32109 EFW Pipe

Electric Fusion Welded construction
UNS S32109 specification standard
Superior weld quality & strength

DIN 1.4878 Round Pipe

DIN 1.4878 / EN 10088 specification
Circular cross-section profile
ADNOC & Saudi Aramco approved

WNR 1.4878 Square Pipe

Square cross-section design
Structural & architectural applications
Custom sizing available ex-stock

SUS 321H Stainless Steel Rectangular Pipe

Rectangular profile construction
Industrial & architectural use
Fully welded & finished

1.4878 Stainless Steel Round Tube

DIN 1.4878 / EN 10088 standard
Seamless & welded options
Precision engineered construction

UNS S32109 Stainless Steel Square Tube

Square profile welded tube
UNS S32109 grade specification
Structural applications ready

321H SS Rectangular Tube

Rectangular profile welded tube
Custom sizing & dimensions
Industrial & commercial grade

SUS 321H Stainless Steel Rectangular Pipe Chemical Composition

Check Stainless Steel 321H Pipe Suppliers in Saudi Arabia Who Offers Excellent Material Properties

0.75% Max

17% - 19%

0.03% Max

0.045% Max

09% - 12%

0.04% - 0.08%

0.10%

0.70% Max

Our Wide Clientele in Following Locations

Asia
Vietnam, Philippines, Laos	Malaysia, Indonesia, Brunei	Singapore, Thailand, Cambodia	Mongolia, Taiwan, Myanmar
Europe
Andorra, Azerbaijan	Germany, Belgium	France, Italy	Armenia, Georgia, Netherlands
Africa
Nairobi, Congo, Chad	Togo, Benin, Johannesburg	Nigeria, South Africa	West Africa, Kenya
Republic of the Congo	Ghana, Niger, Cameroon	Togo, Benin, Johannesburg	Gabon, Rwanda, Ivory Coast
Addis Ababa	Lagos, Abuja, Cape Town	Equatorial Guinea , Sudan	Ogun, Durban

Mechanical Properties for 321H SS Rectangular Tube

Get Stainless Steel 321H Pipe Stockists in Saudi Arabia offers materials with superior Tensile and Yield Strength.

Grade		321H
Yield Strength		205
Elongation		40%
Tensile Strength (min)		515 MPa
Hardness	Rockwell B (max)	95 Hrb
Hardness	Brinell (max)	217 HB

1.4878 Stainless Steel Tube Physical Properties

Properties	Values	Unit
Density	7.9	kg/dm³
Density	0.285	lb/in³
Heat Capacity	500	J/kg°C
Heat Capacity	0.12	Btu/lb°F
Modulus of Elasticity	200	GPa
Modulus of Elasticity	29 x 10-6	psi
Poissons ratio	0.3
Thermal Conductivity	15	W/m°C
Thermal Conductivity	8.7	Btu/ft hr°F
Electrical Resistivity	0.73	µΩm
Electrical Resistivity	27.6 x 10-6	Ω-inch

SS AISI 321H Welded Tube Testing Methods

Hydrostatic Analysis
Recognition of Positive Material
Visual Inspection
TPP Rockwell

Metalography Report
Ultrasonic Testing
CVN Impact

SS 321H Pipe and Tube American and European Standard

ASTM A312 | ASME SA312
UNS S32109
WNR 1.4878
INOX 321H
SUS 321H
ASTM A269 | ASME SA269
ASTM A270
ASTM A554
ASME SA 249
AISI 321H

Stainless Steel 321H Pipe Weight Chart

Nominal Diameter	Weight Lb/ft (kg/m)
38	125.07
32	84.085
34	112.036
34	101.029
36	131.012
36	1193
32	188.087
36	154.048
32	209.062
34	123.077
34	90.02
36	107.03
32	126.078
38	138.047
32	137.012
38	163.016
34	134.079
38	150.083

Buy 1.4878 Stainless Steel Welded Pipe in SCH 5 and SCH 160 Online and Save your Cost

Schedule Chart of UNS S32109 EFW pipe

Nominal Size (Inch)	Sch 160	Sch 40	Sch 80	Sch 5	Sch 10
5"		√	√	√	√
1/2"	√	√	√	√	√
1 1/4"	√	√	√	√	√
1 1/2"	√	√	√	√	√
3/8"		√	√	√	√
4"	√	√	√	√	√
3"	√	√	√	√	√
1/8"		√	√	√	√
1/4"		√	√	√	√
6"		√	√	√	√
1"	√	√	√	√	√
3/4"	√	√	√	√	√
2"	√	√	√	√	√
2 1/2"	√	√	√	√	√

Material Inspection Facility in Following Locations

Sales Agents in Following Locations

Turkey

Saudi Arabia

Iraq

UAE

Jordan

Lebanon

Oman

Qatar

Also covers Syria • Yemen • Iraq • Turkey on request

GCC Countries

Qatar

Saudi Arabia

UAE

Bahrain

Oman

Kuwait

All 6 GCC member states covered — ex-stock & indent supply

MENA Countries

Morocco

Casablanca

Egypt

Cairo

Libya

Tripoli

Tunisia

Tunis

Algeria

Algiers

SCZone

Suez Canal

North Africa & Levant — regular sea freight schedules

Find 321h Stainless Steel Pipe With 427 to 816°C Temperature Range

WNR 1.4878 Pipe Temperature Ranges

Properties (MPa)		Temperature Range
Properties (MPa)		600 °C	700 °C	800°C
Creep limit	R1/1000	110	45	15
Creep limit	R1/10000	85	30	10
Creep resistance	Rz/10000	142	48	15
	Rz/1000	200	88	30
	Rz/100000	65	22	10

Purchase high-quality WNR 1.4878 Round Pipe with MTC and Check its uses

In Which Industrial Sector SUS 321H ERW Pipe Used ?

Get Stainless Steel 321H Pipe Suppliers in Saudi Arabia Offering Dependable Solutions for Demanding Applications.

Kitchen Benches
Chemical Container
Trailers
Architectural Application

Woven for Mining
Heat Exchanger
Construction

HSN Code for Stainless Steel 321H Pipe

HSN Code: 7304.41 - Seamless stainless steel tubes and pipes

HSN Code: 7306.40 - Welded stainless steel tubes and pipes

Purchase High-Quality WNR 1.4878 Round Pipe with MTC - Contact Dammam Suppliers Today

Saudi Aramco Approved Stainless Steel 321H Pipe Suppliers in Saudi Arabia, submit your requirement and receive competitive offers from actual stock holders.

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ADNOC, Saudi Aramco, SABIC and GCC Approved Suppliers of 321H Pipe

pipingmaterial.sa maintains a curated network of genuine, pre-qualified suppliers and manufacturers worldwide who hold valid approved vendor status for key GCC operators.

Saudi Aramco Approved

Sandvik Materials Technology - Sweden
Outokumpu Stainless - Finland / Germany
Nippon Steel Corporation - Japan
JFE Steel Corporation - Japan

ADNOC Approved

Tubacero S.A. - Spain
POSCO - South Korea
SeAH Steel Holdings - South Korea
Tubos Reunidos - Spain
Ferroflux / Gulf Steel - UAE

SABIC Approved

Jindal Stainless Limited - India
Acciaierie Valbruna - Italy
ArcelorMittal Stainless - Luxembourg
Sumitomo Metal Industries - Japan

Find SABIC Approved 321H Stainless Steel Pipe With 427 to 816°C Temperature Range

PDO and EDO Approved Stainless Steel 321H Pipe Suppliers in Saudi Arabia, send your inquiry now and connect directly with approved suppliers keeping ex-stock.

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Equivalent Grades SS 321H Pipe by Country

The following internationally recognised designations for SS 321H pipe are used across Saudi Arabia, Europe, Japan, Korea and India. Buyers in the GCC often receive material certified to these equivalent standards.

🇺🇸

United States (ASTM/ASME/UNS)

ASTM A312 TP 321H - seamless and welded pipe
ASTM A213 TP 321H - seamless boiler tube
ASTM A249 TP 321H - welded heat exchanger tube
UNS S32109 - unified numbering system
AISI 321H - American Iron and Steel Institute

🇩🇪

Germany / Europe (DIN / EN)

WNR 1.4878 - Werkstoffnummer
DIN 1.4878 - German standard
EN 10216-5 1.4878 - seamless tube
INOX 321H - European trade name
X10CrNiTi18-10 - EN chemical designation

🇯🇵

Japan (JIS)

SUS 321H - Japanese grade designation
SUS321H - JIS G 4305 / G 4307
JIS G 3459 SUS321H TP - pipe standard

🇮🇳

India (IS / BIS)

IS 6913 Grade 321H
ASTM A312 / A213 certified production
PED 2014/68/EU certified

🇰🇷

South Korea (KS)

KS D 3562 STS 321H TP
API and ASME certified production

🇬🇧

United Kingdom (BS)

BS 3605 316S51 equivalent
BS EN 10216-5 compliant
PED 97/23/EC / UKCA certified

Applications of WNR 1.4878 Stainless Steel 321H Pipe

Due to its exceptional creep resistance and high-temperature oxidation resistance from 427°C to 816°C, SS 321H pipe is widely specified in the following high-temperature industries across the GCC, Middle East, and Africa:

Petrochemical Refineries

Oil and Gas Processing

Boiler Superheaters

Heat Exchanger Tubes

Reformer Furnace Tubes

Pressure Vessels

Power Generation Plants

Chemical Process Plants

Desulphurisation Units

Offshore Oil Platforms

Pulp and Paper Industry

LNG and LPG Terminals

SS 321H Pipe Pricing and Delivery Info for Saudi Arabia

Indicative Prices Only. Actual prices vary based on quantity, specifications, origin, and market conditions. Minimum order: 500 kg. Contact pipingmaterial.sa for a tailored quotation with exact CIF Dammam / Al Jubail pricing.

Indicative Price Range (FOB India / Korea)

SS 321H Seamless SCH 10S (2″–4″): ~$3,800–$5,200 / MT
SS 321H Seamless SCH 40S (2″–6″): ~$4,200–$5,800 / MT
SS 321H Seamless SCH 160 (2″–6″): ~$5,000–$7,500 / MT
SS 321H Welded ERW (1/2″–12″): ~$3,200–$4,500 / MT
Japanese / European origin: 15–25% premium

Stock and Supply Highlights

Ex-stock in UAE (Jebel Ali) - 2–3 day delivery KSA
European origin: Sandvik, Outokumpu, Valbruna
Japan/Korea origin: JFE, POSCO, Nippon Steel
India origin: Jindal, Salem Steel, Ratnamani
Weekly shipments to Dammam and Al Jubail port

Transit Timing and Delivery - SS 321H Pipe to Saudi Arabia

Country / Origin	Destination Port	Sea Freight (Days)	Air Freight (Days)
🇦🇪 UAE (Ex-Stock)	Dammam / Al Jubail	1–2 Days (Truck)	Same Day
🇮🇳 India	Dammam Port	10–14 Days	1–2 Days
🇰🇷 South Korea	Dammam Port	18–22 Days	2–3 Days
🇯🇵 Japan	Dammam Port	18–24 Days	2–3 Days
🇩🇪 Germany / Europe	Dammam Port	22–28 Days	2–3 Days
🇶🇦 Qatar	Al Jubail Port	3–4 Days	Same Day
🇺🇸 USA	Dammam Port	38–45 Days	4–5 Days

Fast-track option: SS 321H pipe available from UAE Jebel Ali ex-stock with delivery to Dammam and Riyadh within 1–2 days via road freight. Ideal for urgent refinery and petrochemical project requirements.

Ready to Order SS 321H Pipe? Get Your Quote from Dammam and Al Jubail Distributors Today

Qatar Gas Approved Stainless Steel 321H Pipe Suppliers in Saudi Arabia, share your RFQ and get multiple quotes with delivery estimates at no cost.

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Client Reference UNS S32109 Pipe

SABIC Approved Stainless Steel 321H Pipe Suppliers in Saudi Arabia, send your requirement and get direct access to Trusted suppliers with ready stock.

Petroleum Refinery Expansion - Al Jubail Industrial City

SS 321H seamless pipe 3″ and 4″ SCH 80S

Saudi Arabia

Gas Processing Plant - Riyadh Industrial Zone

ASTM A213 TP 321H heat exchanger tubes 1″ OD × 2 mm WT

Saudi Arabia

Boiler Superheater Project - Dammam Power Plant

SS 321H boiler tubes 2″ and 2.5″ OD SCH 40S

Saudi Arabia

Ethylene Cracker - BASF Plant, Antwerp

1.4878 (321H) welded pipe 6″ SCH 10S

Belgium

Refinery Revamp - Alexandria, Egypt

UNS S32109 seamless pipe 4″ and 8″ SCH 80

Egypt

Petrochemical Complex - Jurong Island, Singapore

ASTM A312 TP 321H seamless pipe 2″ and 3″ SCH 80S

Singapore

Coal-to-Liquid Plant - Secunda, South Africa

SS 321H heavy wall tubes 6″ SCH 160

South Africa

Chemical Plant - Al Khobar Industrial Area

SUS 321H seamless pipe 1-1/2″ and 2″ SCH 40S

Saudi Arabia

Power Plant EPC - Brussels, Belgium

INOX 321H (1.4878) boiler tubes 3″ OD × 4 mm WT

Belgium / Europe

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