Alloy Steel Pipe Suppliers in Saudi Arabia

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EN 10204 3.1 • NACE • TPI

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Alloy Steel Pipe Overview

Standards: ASTM A335, ASME SA335
Grades: P1, P5, P9, P11, P12, P22, P91, P92
Types: Seamless, Welded, Chrome Moly, Chromoly
OD Range: 6.35 mm to 660.4 mm
Wall Thickness: 1.65 mm to 59.54 mm
Schedule: SCH 10, 20, 40, 60, 80, 100, 120, 140, 160, STD, XH, XXH
End Finish: Plain End, Beveled End, Threaded & Coupled
Length: SRL , DRL, Fixed Length on Request
Temperature Range: Up to 650°C
Heat Treatment: Annealed, Normalized & Tempered, Quenched & Tempered
MTC: EN 10204 3.1 / 3.2 and NABL Lab Reports
Origin: Japan, USA, Germany, India, South Korea, China

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Buy Aramco Approved Alloy Steel Seamless Pipe in Most Demanded Sizes With Full MTC Documentation

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Table of Content

Alloy Steel Pipe Material Specification
Types of Chromoly Pipe
Alloy Steel Pipe Grades
Chrome Moly Pipe Schedule Chart
Alloy Steel Seamless Pipe Chemical Composition
Chromoly Pipe Mechanical Properties

Pipe Alloy Material Equivalent
Alloy Steel Pipe Price Per Kg
Alloy Steel Pipe Weight Calculator
Chromoly Pipe Comparison Based On Grade
Alloy Steel Pipe Welding Procedure
Alloy Steel Welded Pipe Applications

Supplied To:

Riyadh Tabuk Al Jubail Dammam Yanbu Al Khobar Jeddah Rabigh Hafr Al-Batin Dhahran Ras Al-Khair

We Provide:

ASTM A335 & ASME SA335 ADNOC Approved SABIC Approved Saudi Aramco Approved Ex-Stock Saudi Arabia EN 10204 3.1 MTC P5, P9, P11, P22, P91, P92

Alloy Steel Pipe Material Specification

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Alloy Steel Pipe OD Range

Small Bore: 6.35 mm to 25.4 mm
Medium: 26.67 mm to 114.3 mm
Standard: 139.7 mm to 323.9 mm
Large Bore: up to 660.4 mm

Alloy Steel Seamless Pipe Schedule Chart

SCH 10, 20, 30, 40, 60
SCH 80, 100, 120, 140, 160
STD, XH , XXH
Custom Wall Per ASME B36.10M

Alloy Pipes Grades

P5, P9
P11, P12, P22
P91, P92
T5, T9, T11, T22, T91

Chromoly Pipe ASME Code

ASTM A335 / ASME SA335
ASTM A691 / ASME SA691
ASTM A213 / ASME SA213
API 5L Gr. B, X42, X52, X65

Chrome Moly Pipe Heat Treatment Condition

Full Annealed
Normalized & Tempered
Quenched & Tempered
Stress Relieved

Alloy Steel Pipe Origin

Japan
Germany
India
South Korea, USA

Find ASTM A335 Chromoly Pipe Ex-Stock in Al Jubail in Various Grades, Refer All Types

Types of Chromoly Pipe

Each Alloy Steel Pipe Type Serves a Specific Pressure Rating, Temperature Range, and Industry Application. Understand the Differences Before You Purchase.

Alloy Steel Seamless Pipe

Chrome Moly Pipe

High-Strength Alloy Pipe

Alloy Steel DSAW Pipe

Heavy Wall Alloy Steel Pipe

Alloy Steel Seamless Pipe

Alloy Steel Welded Pipe

Cold Drawn Alloy Steel Pipe

Hot Rolled Alloy Steel Pipe

Alloy Steel Pipe Grades

ASTM A335 P11 Pipe ASTM A335 P22 Pipe AISI 4130 Pipe

Get German Origin Alloy Steel Welded Pipe Online With Schedule SCH 10 to XXH , Check Schedule Chart

Chrome Moly Pipe Schedule Chart

DN	OD	NPS	SCH20	SCH10	Sth	SCH30	SCH80	SCH60	SCH40	XS
8	13.7	1/4	-	1.65	2.24	1.85	3.02	-	2.24	3.02
6	10.3	1/8	-	1.24	1.73	1.45	2.41	-	1.73	2.41
10	17.1	3/8	-	1.65	2.31	1.85	3.20	-	2.31	3.20
20	26.7	3/4	-	2.11	2.87	2.41	3.91	-	2.87	3.91
15	21.3	1/2	-	2.11	2.77	2.41	3.73	-	2.77	3.73
25	33.4	1	-	2.77	3.38	2.90	4.55	-	3.38	4.55
40	48.3	11/2	-	2.77	3.68	3.18	5.08	-	3.68	5.08
32	42.2	11/4	-	2.77	3.56	2.97	4.85	-	3.56	4.85
50	60.3	2	-	2.77	3.91	3.18	5.54	-	3.91	5.54
100	114.37	4	-	3.05	6.02	4.78	8.56	-	6.02	8.56
80	88.9	3	-	3.05	5.49	4.78	7.62	-	5.49	7.62
65	73.0	21/2	-	3.05	5.16	4.78	7.01	-	5.16	7.01
90	101.6	31/2	-	3.05	5.74	4.78	8.08	-	5.74	8.08

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Alloy Steel Seamless Pipe Chemical Composition

Alloy Steel Pipe grade defines its strength, heat resistance, and performance under pressure. P91 and P92 grades use Cr-Mo-V elements for high-temperature service in power plants and refineries.

Grade	UNS	Si≤	C≤	P≤	Mo	Mn	S≤	Cr
P2	K11547	0.10~0.30	0.10~0.20	0.025	0.44~0.65	0.30~0.61	0.025	0.50~0.81
P1	K11522	0.10~0.50	0.10~0.20	0.025	0.44~0.65	0.30~0.80	0.025	-
P5	K41545	0.50	0.15	0.025	0.44~0.65	0.30~0.60	0.025	4.00~6.00
P5c	K41245	0.50	0.12	0.025	0.44~0.65	0.30~0.60	0.025	4.00~6.00
P5b	K51545	1.00~2.00	0.15	0.025	0.44~0.65	0.30~0.60	0.025	4.00~6.00
P11	K11597	0.50~1.00	0.05~0.15	0.025	0.44~0.65	0.30~0.61	0.025	1.00~1.50
P9	S50400	0.50~1.00	0.15	0.025	0.44~0.65	0.30~0.60	0.025	8.00~10.00
P15	K11578	1.15~1.65	0.05~0.15	0.025	0.44~0.65	0.30~0.60	0.025	-
P12	K11562	0.50	0.05~0.15	0.025	0.44~0.65	0.30~0.60	0.025	0.80~1.25
P21	K31545	0.50	0.05~0.15	0.025	0.80~1.60	0.30~0.60	0.025	2.65~3.35
P91	K91560	0.20~0.50	0.08~0.12	0.020	0.85~1.05	0.30~0.60	0.010	8.00~9.50
P22	K21590	0.50	0.05~0.15	0.025	0.87~1.13	0.30~0.60	0.025	1.90~2.60
P92	K92460	0.50	0.07~0.13	0.020	0.30~0.60	0.30~0.60	0.010	8.50~9.50

Chromoly Pipe Mechanical Properties

P91 and P92 alloy steel pipes offer the best strength and heat resistance among chrome moly grades, making them the top choice for boilers and reformer piping in Saudi Arabia refineries

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HB)	Max Service Temp (°C)
P5	415 min	205 min	30 min	179 max	620
P9	415 min	205 min	30 min	179 max	650
P11	415 min	205 min	30 min	179 max	580
P22	415 min	205 min	30 min	163 max	620
P91	585 min	415 min	20 min	250 max	650
P92	620 min	440 min	20 min	265 max	650

Pipe Alloy Material Equivalent

Saudi buyers often need to match ASTM alloy steel pipe grades with European, Japanese, and British standards for multi-origin projects. The chart below covers the most common grade equivalents.

🇺🇸

ASTM / ASME

P11 - ASTM A335 Gr P11
P22 - ASTM A335 Gr P22
P91 - ASTM A335 Gr P91
T11 - ASTM A213 Gr T11
T91 - ASTM A213 Gr T91

🇪🇺

EN 10216-2 / DIN

P11 - 13CrMo4-5 / DIN 1.7335
P22 - 10CrMo9-10 / DIN 1.7380
P91 - X10CrMoVNb9-1 / 1.4903
P5 - X10CrMoVNb9-1 / 1.7362
P9 - X12CrMo9-1 / 1.7386

🇯🇵

JIS G3458 / G3462

P11 - STPA22 / STBA22
P22 - STPA23 / STBA23
P91 - STPA28 / STBA28
P5 - STPA25 / STBA25
P9 - STPA26 / STBA26

🇬🇧

BS 3604 / BS 3059

P11 - 620-460 / HFS1
P22 - 622-490 / HFS2
P91 - 629-510
P5 - 501-400
P9 - 621-410

🇨🇳

GB/T 5310

P11 - 15CrMoG
P22 - 12Cr2MoG
P91 - 10Cr9Mo1VNbN
P5 - 1Cr5Mo
P9 - 12Cr9Mo1

🇷🇺

GOST 550

P11 - 15KhM
P22 - 12Kh2M1
P91 - 10KhMFBN
P5 - 15Kh5M
P9 - 12Kh8VF

Connect Directly With Alloy Steel Pipe Stockists in Saudi Arabia

Send Your Chrome Moly Pipe Inquiry to pipingmaterial.sa and Receive a Response Guaranteed Within Hours. We Identify and Connect You With Genuine Alloy Steel Pipe Stockists in Saudi Arabia Holding Ex-Stock P11 / P22 / P91 Material At The Best Market Price.

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Offer Cut to Length Hot Rolled and Cold Drawn Alloy Steel Pipe At Discounted Price, Refer Price Per KG

Alloy Steel Pipe Price Per Kg

Alloy steel pipe prices in Saudi Arabia depend on grade, schedule, OD, origin, and alloy surcharges. P91 costs more than P11 due to tighter alloying and heat treatment. Use the table below as a budget reference or email contact@pipingmaterial.sa for a live quote.

STANDARD CR-MO P11 & P22 ASTM A335 / ASME SA335

HIGH-STRENGTH P91 & P92 ASTM A335 / ASME SA335

SAR 18 - SAR 42 per kg

Price Per Kg (Indicative)

SAR 95 - SAR 180 per kg

SAR 55 - SAR 130 per foot

Alloy Steel Pipe Price Per Foot

SAR 290 - SAR 550 per foot

MOQ: 1 pipe / 100 kg

Minimum Order Quantity

MOQ: 500 kg / indent basis

Widely Available - Ex-Stock KSA

Stock Availability KSA

Indent / Lead Time 6-10 Weeks

Boilers, Refineries, Heat Exchangers

Primary Use

Power Plants, Reformers, USC Boilers

⚠ Prices are indicative and subject to market fluctuation, grade, origin, and quantity. Contact contact@pipingmaterial.sa for a confirmed current quote.

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Alloy Steel Pipe Weight Calculator

Enter OD, wall thickness, length, and quantity to calculate weight per piece and total order weight for any alloy steel pipe grade.

Grade

Outer Diameter 114 mm

Wall Thickness 8.6 mm

Length per Piece 6.0 m

Quantity (Pieces) 50 pcs

Weight per Piece

—

Total Order Weight

—

Total Length

—

Formula: Weight (kg/m) = π × (OD − WT) × WT × density / 1000. Results are theoretical — actual weight may vary ±2% based on mill tolerance per ASME B36.10M.

Need a Quote Based on This Weight?

Email your grade, OD, schedule, quantity, and delivery terms to our sourcing desk for a same-day response from verified alloy steel pipe stockists in Saudi Arabia.

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Chromoly Pipe Comparison Based On Grade

The most searched comparison by Saudi Aramco and SABIC engineers. P11 for moderate heat, P22 for higher temps, and P91 for ultra-high-temperature critical service

LOW CHROME MOLY P11 1.25Cr - 0.5Mo

MID CHROME MOLY P22 2.25Cr - 1Mo

HIGH-STRENGTH CR-MO P91 9Cr - 1Mo - V

415 MPa

Tensile Strength

415 MPa

585 MPa

580°C

Max Service Temp

620°C

650°C

SAR 18 - 42 / kg

Indicative Price

SAR 22 - 50 / kg

SAR 95 - 180 / kg

Good - TIG / SMAW

Weldability

Good - Preheat 200°C

Requires PWHT 760°C

Ex-Stock KSA

Availability

Ex-Stock KSA

Indent 6-10 Weeks

Refinery Heaters, HX

Typical Application

High-Pressure Steam

USC Boilers, Reformers

Discover SABIC Approved Heavy Wall Alloy Steel Pipe For Hydrocrackers and Steam Boilers, See Welding Procedure

Alloy Steel Pipe Welding Procedure

Alloy Steel Pipe Welding Procedure is Play Most Important Role. Wrong preheat or skipped PWHT is the leading cause of weld cracking in Cr-Mo piping. The steps below cover P11, P22, and P91 as per SAES-W-016.

Joint Preparation

V-groove or bevel cut per ASME B16.25. Clean 25 mm from weld edge. PMI check before cutting.

Preheat

P11: 150°C · P22: 200°C · P91: 200–250°C. Inter-pass max 315°C. Prevents cracking and ensures weld integrity.

Filler Metal Selection

Grade-matched fillers: B2 for P11, B3 for P22, B9 for P91. Low-hydrogen only. Baked at 300°C before use.

Welding Process

TIG root for precision. SMAW/FCAW fill and cap. Argon back-purge for P91. WPS qualified per ASME IX.

Post-Weld Heat Treatment

P11: 650–700°C · P22: 675–720°C · P91: 730–780°C. 1 hr per 25 mm wall. Relieves stress and restores toughness.

NDE & Hardness Testing

RT/UT per ASME B31.3. Hardness limits: P11 ≤225 HB · P22 ≤241 HB · P91 ≤265 HB. PMI verified per Aramco 09-SAMSS-101.

PWHT is mandatory for all P91 welds regardless of wall thickness per ASME B31.1, B31.3, and Saudi Aramco standards. Skipping PWHT on P91 results in hydrogen cracking and type IV creep damage — the two most common failure modes in Jubail refinery piping.

Alloy Steel Welded Pipe Applications

Alloy Steel Seamless Pipe is a core material in Saudi Arabia's refineries, petrochemical plants, and power stations. From steam headers at Yanbu to reformer manifolds at Jubail, chromoly grades perform where carbon steel cannot

Hydrocrackers

Steam Boilers

Heat Exchangers

Reformer Piping

HP Steam Lines

Desulfurization Units

Pressure Vessels

Gas Compression

Alloy Steel Pipe Approved Suppliers

Find Saudi Aramco, SABIC, ADNOC, and SEC approved Alloy Steel Pipe suppliers in Saudi Arabia on Pipingmaterial.sa with full mill certificates, EN 10204 3.1/3.2 MTC, PMI reports, and NACE certification.

Saudi Aramco Approved

Sumitomo Metal Industries, Japan
Vallourec & Mannesmann, Germany
Nippon Steel Corporation, Japan
ISMT Limited, India
Tenaris, Argentina

SABIC & ADNOC Approved

Salzgitter Mannesmann, Germany
ArcelorMittal Tubular Products
TMK, Russia
Maharashtra Seamless Ltd., India
Sanghvi Forging & Engineering, India

Testing & Inspection

Hydrostatic Testing per ASTM A335 Sec. 11
Ultrasonic Testing per ASTM E213
PMI on Each Pipe for P91 / P92
Charpy Impact Test at -20°C for Low-Temp Service
Hardness Survey Post-PWHT per ASME IX

Third-Party Inspection

SGS, Bureau Veritas - Ex-Works Inspection
Intertek - Material Certification Witnessing
DNV GL - For Offshore & Subsea Applications
TUV SUD - For European-origin Supply
SASO Certificate & Country of Origin

Alloy Steel Pipe Supply References Worldwide

Hydrocracker Unit Revamp

ASTM A335 P22 Seamless Pipe, 8" SCH 80, DRL 12 m, PMI & Hydro-tested, EN 10204 3.1 MTC

Saudi Aramco Ras Tanura Refinery

Ras Tanura, Eastern Province, KSA

Reformer Outlet Header

ASTM A335 P91 Seamless Pipe, 12" SCH 120, Hot-bending & PWHT 760°C, Third-party Witnessed

SABIC Ethylene Cracker Jubail

Al-Jubail Industrial City, KSA

Desulfurization Unit Piping

ASTM A335 P9 Seamless Pipe, 6" SCH 40/80, Sour Service NACE MR0175, SSCC Tested

Sadara Chemical Company Jubail

Jubail Industrial City, KSA

Crude Distillation Unit Piping

ASTM A335 P11 Seamless Pipe, 10" SCH 80, PWHT & PMI Certified, EN 10204 3.2 MTC, Origin Japan

ADNOC Ruwais Refinery Expansion

Ruwais, Abu Dhabi, UAE

Supercritical Boiler Headers

Alloy Steel Seamless Pipe 44.5 mm OD × 6.3 mm WT, Normalized & Tempered, Hardness & UT Tested

NTPC Vindhyachal Super Thermal Power Station

Singrauli, Madhya Pradesh, India

Gas Processing Plant Pipework

ASTM A335 P22 Seamless Pipe, 8" SCH 60, Beveled Ends, NACE MR0175, SGS Inspected, DRL

NLNG Bonny Island LNG Train 7

Bonny Island, Rivers State, Nigeria

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Alloy Steel Seamless Pipe Dealers and Distributors in Saudi Arabia

Al-Rashid Trading & Contracting Co., Riyadh
Rezayat Trading Company Ltd., Al Khobar

Pan Gulf Piping Systems, Al Khobar
Gulf Metal Trading, Dammam

Binzagr International Trading, Jeddah
AMSCO Industrial Supplies, Jubail

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