Pipe Fittings Supplier Qatar | Elbows, Tees, Reducers — Valiol Trading Doha

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Qatar-Stock · MTC 3.1 Certified

Pipe Fittings
Supplier in Qatar

ASME B16.9 butt weld, ASME B16.11 forged, socket weld, threaded and branch fittings in carbon steel, stainless steel, duplex and alloy steel. In stock Doha — same-week delivery to Ras Laffan, Mesaieed and all Qatar project sites.

ASME B16.9 ASME B16.11 MSS SP-97 ASTM A234 / A403 MTC 3.1 ½″ – 72″ NPS

📋 Request a Quote View Spec Tables ↓

Quick Reference

Size Range½″ – 72″ NPS

Wall ScheduleSCH 10 to XXS

Pressure ClassClass 150 – 9000

End TypesBW · SW · THD · Grooved

StandardsASME B16.9 · B16.11 · MSS SP-97

MaterialsCS · SS · Duplex · Alloy · Nickel

CertificationEN 10204 3.1 / 3.2 MTC

Delivery (Qatar)Same week — Doha & Ras Laffan

About Our Fittings Range

Certified Pipe Fittings
Supplier — Doha, Qatar

Valiol Trading supplies the complete range of industrial pipe fittings from our Doha base in Qatar. Whether your project requires standard ASTM A234 WPB carbon steel butt weld fittings in schedule 40, or high-alloy super duplex socket weld fittings in Class 3000 for offshore sour service — we source, certify, and deliver exactly to your specification.

Our fittings range covers every connection type — butt weld, socket weld, threaded (NPT/BSP), grooved, and branch fittings (olets) — across the full size and pressure class spectrum required by QatarEnergy EPC contractors, Ras Laffan industrial city operators, and offshore rig supply projects.

All fittings are supplied with full Mill Test Certificates (MTC EN 10204 3.1), Material Test Reports, heat numbers, and dimensional inspection records. Third-party inspection by SGS, Bureau Veritas, or Intertek available on request.

Butt weld fittings: NPS ½″ to 72″ in all schedules — SCH 10 to XXS
Forged fittings: NPS ½″ to 4″ in Class 3000, 6000, and 9000
Elbows 45°/90°/180°, equal & reducing tees, concentric & eccentric reducers, caps, crosses, stub ends
All major grades: CS, SS 304/316/321, Duplex 2205, SDX 2507, Alloy P11/P22/P91, Nickel Alloy
QatarEnergy & Ras Laffan AVL / vendor pre-qualification support
4-hour quote turnaround on all Qatar enquiries

Standards We Supply To

International Fitting Standards

ASME B16.9

ASME B16.11

ASME B16.28

MSS SP-43

MSS SP-75

MSS SP-79

MSS SP-97

ASTM A234

ASTM A403

ASTM A860

ASTM A815

ASTM A182

ASTM A105

EN 10253-2

NACE MR0175

DIN 2605

AWWA C208

Country of Origin: Fittings sourced from certified manufacturers in India (Ahmednagar, Jalandhar, Mumbai), Europe (Germany, Italy), South Korea, and Japan — with full manufacturer test documentation, EN 10204 3.1/3.2 certificates, and country of origin documentation available for all Qatar import compliance.

What We Supply

Industrial Fitting Types for Qatar Projects

Every pipe fitting type used in Qatar's oil & gas, construction, and industrial projects — from standard butt weld elbows to exotic alloy branch fittings for high-pressure QatarEnergy specifications.

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Butt Weld Fittings

The primary fitting type for large-bore, high-pressure piping in Qatar's oil & gas systems. Welded directly into the pipeline — no flanges, no threaded joints. Maximum pressure integrity and cleanability for gas transmission and process piping.

ASME B16.9 ASTM A234 / A403 ½″ – 72″ SCH 10 – XXS Seamless & Welded

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Forged Steel Fittings

High-strength fittings for small-bore, high-pressure Qatar applications. Manufactured from solid forged bar — no casting porosity. Available in socket weld and threaded (NPT) ends. Ideal for instrument connections and utility piping at Ras Laffan.

ASME B16.11 ASTM A105 / A182 ½″ – 4″ Class 3000 / 6000 / 9000

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Socket Weld Fittings

The pipe end inserts into a socket before fillet welding. Preferred for NPS ½″ to 2″ high-pressure, leak-free instrument and process piping connections on Qatar offshore platforms and Ras Laffan petrochemical plants.

ASME B16.11 MSS SP-79 ½″ – 4″ Class 3000 / 6000 Forged

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Threaded (Screwed) Fittings

NPT and BSP threaded fittings for small-bore, low-to-medium pressure applications, utility piping, and instrument connections. No welding required — fast installation and easy maintenance on Qatar EPC project sites.

ASME B16.11 NPT / BSP ⅛″ – 4″ Class 2000 / 3000 / 6000

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Grooved & Press-Fit Fittings

Victaulic-style roll-grooved mechanical couplings — no welding required. Fast installation for Qatar fire protection, HVAC, cooling water, and utility systems. CS, ductile iron, and stainless steel available in stock.

Victaulic Compatible AWWA C606 1″ – 24″ CS / DI / SS

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Branch Fittings (Olets)

Weldolets, sockolets, thredolets, nippolets, latrolets, elbolets and sweepolets for direct branch connections into header pipe. MSS SP-97. All alloys available for Qatar sour service and North Field gas specifications.

MSS SP-97 Weldolet / Sockolet All sizes NACE MR0175 Custom MTO

Quick Reference

Common Fitting Geometries

90° LR Elbow

R=1.5D · 45° also avail.

180° Return

U-Bend, LR & SR

Equal Tee

Straight & reducing

Concentric Reducer

Eccentric also avail.

End Cap

Seamless & welded

Weldolet

MSS SP-97 branch fittings

Full Product Data

Complete Pipe Fitting Specifications

Detailed specification tables for every fitting category stocked in Qatar. All products available with full MTC 3.1 documentation, third-party inspection, and same-week Qatar delivery. Contact us for current stock availability and pricing.

Butt Weld Fittings — Types, Sizes & Standards

ASME B16.9 butt weld fittings are the preferred connection method for NPS 2″ and above in Qatar's oil & gas, refinery, and high-pressure piping systems. Available seamless and welded in all schedules.

Butt Weld Fittings (ASME B16.9) — Qatar Stock
Fitting Type	Standard	Size Range (NPS)	Wall Schedule	Radius / Type	End Prep	Construction	Qatar Application
90° Long Radius Elbow (LR)	ASME B16.9	½″ – 72″	SCH 10 – XXS	R = 1.5D	Bevel End (BW)	Seamless / Welded	Gas transmission, Ras Laffan process piping
45° Long Radius Elbow (LR)	ASME B16.9	½″ – 72″	SCH 10 – XXS	R = 1.5D	Bevel End (BW)	Seamless / Welded	Angled branch, North Field pipeline connections
90° Short Radius Elbow (SR)	ASME B16.28	½″ – 24″	SCH 40 – XXS	R = 1.0D	Bevel End (BW)	Seamless / Welded	Tight spaces, offshore platform piping
180° Return Bend (LR)	ASME B16.9	½″ – 24″	SCH 40 – 160	R = 1.5D / 1.0D SR	Bevel End (BW)	Seamless	U-bends, heat exchangers, compact loops
Equal Tee (Straight Tee)	ASME B16.9	½″ – 72″	SCH 10 – XXS	Equal run & branch	Bevel End (BW)	Seamless / Welded	Header branch take-offs, QatarEnergy piping
Reducing Tee	ASME B16.9	¾″ – 48″ run	SCH 40 – 160	Specify run × branch	Bevel End (BW)	Seamless / Welded	Reduced branch from main header
Concentric Reducer	ASME B16.9	¾×½″ – 48×16″	SCH 20 – XXS	Concentric (CL aligned)	Bevel End (BW)	Seamless / Welded	Vertical piping, gas service, upward flow
Eccentric Reducer	ASME B16.9	¾×½″ – 48×16″	SCH 20 – XXS	Eccentric (flat bottom/top)	Bevel End (BW)	Seamless / Welded	Pump suction, avoids air pockets — Qatar refineries
End Cap (Pipe Cap)	ASME B16.9	½″ – 72″	SCH 10 – XXS	Dished / Flat	Bevel End (BW)	Seamless / Welded	Pipeline termination, pressure test blind-offs
Stub End (Lap Joint)	ASME B16.9 Type A&B	½″ – 24″	SCH 10 – 80	Type A (long) / Type B (short)	Plain End (PE)	Seamless / Welded	Lap joint flanges, dissimilar metal connections

Forged Steel Fittings — Socket Weld & Threaded

ASME B16.11 forged fittings for small-bore high-pressure applications at Qatar EPC and Ras Laffan instrument and process piping installations. Available in carbon steel, stainless steel, and duplex.

Forged Fittings (ASME B16.11) — Qatar Stock
Fitting Type	Standard	End Connection	Size Range	Pressure Class	Material Grades	Application
SW 90° Elbow	ASME B16.11	Socket Weld	½″ – 4″	3000 / 6000	A105N, A182 F316L, F11	HP process piping, instrument loops
SW 45° Elbow	ASME B16.11	Socket Weld	½″ – 4″	3000 / 6000	A105N, A182 F316L	Angled connections in tight spaces
SW Equal Tee	ASME B16.11	Socket Weld	½″ – 4″	3000 / 6000	A105N, A182 F316L, F51	Small-bore branch take-offs Qatar
SW Coupling (Full/Half)	ASME B16.11	Socket Weld	½″ – 4″	3000 / 6000	A105N, A182 F316L	Straight unions in instrument piping
THD 90° Elbow (NPT)	ASME B16.11	Threaded NPT	⅛″ – 4″	2000 / 3000 / 6000	A105N, A182 F316, F11	Screwed utility connections, no-weld zones
THD Equal Tee (NPT)	ASME B16.11	Threaded NPT	⅛″ – 4″	2000 / 3000 / 6000	A105N, A182 F316	Instrument taps, vent & drain connections
THD Coupling (Full/Half)	ASME B16.11	Threaded NPT	⅛″ – 4″	2000 / 3000 / 6000	A105N, A182 F316, F11	Screwed pipe extensions & unions
THD Cross (4-Way)	ASME B16.11	Threaded NPT	⅛″ – 2″	3000 / 6000	A105N, A182 F316	Instrument manifold connections
THD Plug & Bushing	ASME B16.11	Male/Female NPT	⅛″ – 4″	2000 / 3000	A105N, A182 F316	Reducing adaptors in threaded connections

Branch Fittings — Weldolets, Sockolets & Olet Types

Branch connection fittings (olets, MSS SP-97) create branch connections directly into the header pipe wall — eliminating the need for a reducing tee. Used extensively on Qatar gas transmission pipelines and Ras Laffan process piping.

Branch Fittings (MSS SP-97) — Olet Types for Qatar Projects
Olet Type	Standard	Branch End	Header Size	Branch Size	Pressure Class	Materials	Application
Weldolet	MSS SP-97	Butt Weld (BW)	2″ – 72″	½″ – 24″	3000 / 6000 / 9000	A105N, A182 F316, F11, F22, F51, F53	HP BW branch off large Qatar headers
Sockolet	MSS SP-97	Socket Weld (SW)	2″ – 24″	½″ – 2″	3000 / 6000	A105N, A182 F316, F11, F22	HP SW branch from medium/large headers
Thredolet	MSS SP-97	Threaded NPT	2″ – 24″	⅛″ – 2″	3000 / 6000	A105N, A182 F316, F11	Threaded branch for instruments, gauges
Latrolet (45°)	MSS SP-97	BW / SW / THD	2″ – 24″	½″ – 4″	3000 / 6000	A105N, A182 F316, F11	45° branch — flow optimisation Qatar gas lines
Elbolet	MSS SP-97	BW / SW / THD	On 90° LR elbows	½″ – 4″	3000 / 6000	A105N, A182 F316, F11	Branch take-off from elbow body
Sweepolet (Contour)	MSS SP-97	Butt Weld (BW)	4″ – 48″	1″ – 16″	Per calculation	A105N, A182 F316, F51, F53	Low-turbulence branch — Qatar pigging systems

Material Grades

Pipe Fitting Materials for Qatar Service

The material grade must match the pipe and service conditions at your Qatar project site. All grades below are stocked in Doha and supplied with EN 10204 3.1 MTC.

Carbon Steel

Carbon Steel Fittings

Standard grade for general Qatar oil & gas process piping. Most widely used material for butt weld and forged fittings across Ras Laffan and Doha projects.

ASTM A234 WPBASTM A105N ASTM A420 WPL6ASTM A860 WPHY API 5L X42–X70

Stainless Steel

Stainless Steel Fittings

Austenitic stainless steel for corrosive process services, food-grade, and offshore Qatar applications. Available in ASME B16.9 and B16.11 from Doha stock.

ASTM A403 WP304LASTM A403 WP316L ASTM A182 F304LASTM A182 F316L TP321 / TP347

Duplex & Super Duplex

Duplex & SDX Steel

High-strength, corrosion-resistant duplex grades for Qatar sour gas service, seawater piping, and offshore installations. NACE MR0175 compliant.

ASTM A815 WP22ASTM A182 F51 ASTM A182 F53UNS S31803 UNS S32750 (SDX)

Alloy Steel

Alloy Steel Fittings

Chromium-molybdenum alloy steels for high-temperature, high-pressure Qatar power plant and refinery service — HP steam, HRSG, and North Field compression systems.

ASTM A234 WP11ASTM A234 WP22 ASTM A234 WP91ASTM A182 F11 ASTM A182 F22

Low Temperature

Low Temperature & LNG

Impact-tested fittings for cryogenic and LNG service at Qatar's North Field LNG trains and cold utility systems. ASTM A420 WPL6 for –46°C service.

ASTM A420 WPL6ASTM A350 LF2 ASTM A333 Gr.69% Ni (A333 Gr.8)

Nickel Alloy

Nickel & Exotic Alloys

High-performance alloys for Qatar's most aggressive service environments — sour gas, H₂S, seawater, and high-temperature process applications offshore.

Inconel 625 (N06625)Incoloy 825 (N08825) Hastelloy C-276Monel 400 NACE MR0175

Certification & Compliance

Fitting Standards for Qatar Projects

All fittings supplied by Valiol Trading conform to the international standards required by QatarEnergy, Ras Laffan operators, and Qatar EPC engineering specifications.

ASME B16.9

Factory-Made Wrought Buttwelding Fittings — the primary standard for BW fittings ½″ to 72″ on Qatar piping

ASME B16.11

Forged Fittings, Socket-Welding and Threaded — Class 3000/6000/9000 for small-bore Qatar instrument piping

ASME B16.28

Short Radius Elbows and Returns — R=1.0D for tight-radius connections on Qatar offshore platforms

MSS SP-97

Integrally Reinforced Branch Connection Fittings (Weldolets, Sockolets) — Qatar gas header branch connections

ASTM A234

Piping Fittings of Wrought Carbon and Alloy Steel — WPB, WP11, WP22, WP91 for Qatar process piping

ASTM A403

Wrought Austenitic Stainless Steel Piping Fittings — WP304L, WP316L for Qatar corrosive service

ASTM A815

Wrought Ferritic, Ferritic/Austenitic and Martensitic Stainless Steel Fittings — Duplex for Qatar sour service

NACE MR0175

Materials for H₂S sour service — mandatory for Qatar North Field and offshore sour gas environments

Where Our Fittings Are Used

Applications Across Qatar's Energy Sector

Valiol Trading's pipe fittings are used on Qatar's most critical oil & gas, petrochemical, and infrastructure projects.

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Oil & Gas Rigs

Offshore platform piping & Qatar onshore rig installations

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Ras Laffan Industrial City

Petrochemical plants & QatarEnergy EPC contractor supply

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Qatar Gas Pipelines

North Field & gas transmission pipeline systems across Qatar

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Qatar Refineries

Mesaieed refinery process & utility piping systems

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Qatar LNG Trains

Cryogenic fittings for North Field LNG expansion projects

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Qatar Power Generation

Alloy steel fittings for HP steam & power plant piping

Common Questions

Pipe Fittings
FAQ — Qatar

Questions from Qatar-based engineers and procurement teams about our pipe fittings range.

Ask Our Engineers →

Do you supply fittings certified for QatarEnergy projects? +

Yes. All fittings are supplied with EN 10204 3.1 Mill Test Certificates (MTC) as standard. For QatarEnergy EPC contractor projects, we can also provide EN 10204 3.2 third-party witnessed certification by SGS, Bureau Veritas, or Intertek. We support AVL / vendor pre-qualification documentation for Ras Laffan operators and QatarEnergy-approved contractor lists.

What is the difference between ASME B16.9 and ASME B16.11? +

ASME B16.9 covers factory-made wrought buttwelding fittings — used for large-bore (typically NPS 2″ and above) piping in oil & gas, refinery, and process systems where a full-penetration butt weld is made. ASME B16.11 covers forged fittings in socket weld and threaded (NPT/BSP) ends — typically used for small-bore (NPS ½″ to 4″) high-pressure instrument and utility connections. Qatar projects commonly require both standards on the same piping system.

Can you supply NACE MR0175 compliant fittings for sour service? +

Yes. Sour service (H₂S) is common across Qatar's North Field and offshore installations. We supply NACE MR0175 / ISO 15156-compliant fittings in duplex 2205 (F51), super duplex 2507 (F53), Inconel 625, and selected carbon steel grades with maximum hardness controls. Material test reports confirming HRC/HB hardness and heat treatment are provided with each supply.

How quickly can you deliver pipe fittings to Ras Laffan? +

For items in our Doha stock, we offer same-week delivery to Ras Laffan Industrial City, Mesaieed, and all Qatar project sites. For non-stock items — specialty alloys, extra-large bore, or non-standard schedules — typical lead time from overseas mill is 4–10 weeks. We maintain a broad buffer stock of the most commonly specified grades and sizes to minimise project delays for Qatar clients.

What is a weldolet and when should I use one on my Qatar project? +

A weldolet (MSS SP-97) is an integrally reinforced branch connection fitting that butt-welds onto the header pipe wall to create a branch connection — without needing a reducing tee. Weldolets are preferred on Qatar large-bore gas transmission headers (typically 6″ and above) where a full-penetration branch weld with integral reinforcement is required. They are also mandatory in piggable pipeline systems where the branch connection must not protrude into the bore. Contact our Qatar engineering team for sizing and schedule matching assistance.

Free Quote — 4hr Response

Request Pipe Fittings
for Your Qatar Project

Send your fitting schedule, material specs, and Qatar project location. Our Doha team responds within 4 hours with pricing, stock confirmation, and full MTC 3.1 documentation.

Same-week delivery — Doha, Ras Laffan & Mesaieed
EN 10204 3.1 MTC on all items as standard
All grades: CS, SS, Duplex, Alloy, Nickel Alloy
QatarEnergy & EPC contractor AVL support
NACE MR0175 sour service compliance available

Get a Free Quote

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