Complete Oil & Gas Product Catalogue
Valiol Trading stocks over 500 certified product lines in Doha — pipes, fittings, flanges, valves, structural steel, aluminium, PPE, and welding & drilling supplies. Every item API, ASTM, or ISO certified with EN 10204 3.1 MTC. Same-week delivery to Ras Laffan, Mesaieed, and all Qatar project sites.
Pipes & Tubes
API 5L, ASTM A106, ASTM A312 carbon steel, stainless steel, seamless, ERW, duplex, alloy steel and specialty pipes — from ¼″ to 72″ NPS, all schedules, in Doha stock with MTC 3.1 documentation.
API 5L · ASTM A106
API 5L Gr.B / X42–X70 PSL1/PSL2, ASTM A106 Gr.B, ASTM A53. Seamless & ERW. For Qatar gas transmission, North Field & Ras Laffan process piping.
ASTM A312
ASTM A312 TP304L, TP316L, TP321, TP347. Seamless & welded. For Qatar offshore, chemical, and corrosive service. ASTM A269 instrumentation tubes.
ASTM A790
Duplex 2205 (S31803) and Super Duplex 2507 (S32750). NACE MR0175 for Qatar sour service, offshore and high-chloride environments. PREN 35–43.
ASTM A335
ASTM A335 P1/P5/P9/P11/P22/P91 for Qatar power & refinery. Nickel alloy Inconel 625, Hastelloy C276. HDPE, GRE/GRP for water & desalination.
Pipe Fittings
ASME B16.9 butt weld fittings, ASME B16.11 forged fittings, socket weld, threaded, and MSS SP-97 branch fittings (olets) in carbon steel, stainless, duplex, and alloy steel — Doha stock, MTC 3.1.
ASME B16.9 · ASTM A234
ASME B16.9 elbows (45°/90°/180°), equal & reducing tees, concentric & eccentric reducers, caps, stub ends. ASTM A234 WPB. ½″–72″ NPS. Qatar EPC stock.
ASME B16.11 · ASTM A105
ASME B16.11 socket weld & threaded (NPT) elbows, tees, couplings, crosses. ASTM A105N. Class 3000/6000/9000. ½″–4″. Qatar instrument & utility piping.
ASTM A403 · A182
BW fittings ASTM A403 WP304L/316L (ASME B16.9). Forged ASTM A182 F304L/F316L (B16.11). Duplex A815 WP22 / F51 for Qatar offshore & sour service.
MSS SP-97 · ASTM A182
MSS SP-97 weldolets, sockolets, thredolets, latrolets, elbolets, sweepolets. All alloys: A105N, A182 F316L, F11, F22, F51, F53. Qatar gas pipeline headers & offshore.
Flanges, Gaskets & Bolting
ASME B16.5 and B16.47 flanges in all types (WN, SO, BL, SW, THD, LJ, Orifice, Spectacle), all pressure classes (150–2500#), API 6A wellhead flanges, plus spiral wound gaskets, RTJ rings, and stud bolt sets — Qatar stock.
ASTM A105N · A694
ASME B16.5 weld neck (WN), slip-on (SO), blind (BL), socket weld (SW), threaded (THD), lap joint (LJ). ASTM A105N, A694 F42–F70. Class 150–2500. Qatar stock.
ASTM A182 · F304L/F316L
ASTM A182 F304L, F316L, F321, F347. ASME B16.5 all types. Raised face, RTJ, and flat face. For Qatar chemical, offshore, and pharmaceutical piping systems.
ASTM A182 · F11/F22/F91
ASTM A182 F11, F22, F91 for Qatar high-temperature power & refinery service. ASME B16.5 all types. Class 600–2500. HRSG & HP steam applications.
F51 · F53 · Inconel 625
Duplex F51 (2205), SDX F53 (2507). Inconel 625, Incoloy 825. API 6A wellhead flanges to 15,000 PSI. Gasket & stud bolt sets — spiral wound, RTJ, Kammprofile. Qatar offshore.
Industrial Valves
Gate, ball, globe, check, butterfly, needle, control, and safety relief valves — API 6D, API 600, ASME B16.34. Carbon steel, stainless, and duplex. ¼″–48″ NPS, Class 150–2500. QatarEnergy-approved brands in stock in Doha.
API 600 · API 602
API 600 cast steel gate valves (2″–24″) and API 602 forged gate valves (½″–4″). OS&Y, rising stem. ASTM A216 WCB body, A105N forged. Qatar pipeline isolation service.
API 6D · ASME B16.34
API 6D trunnion-mounted and floating ball valves (½″–48″). ASME B16.34 globe valves for throttling. Carbon steel, stainless, duplex. Gear-operated & actuated options for Qatar pipelines.
API 594 · API 609
API 594 swing, tilting disc, and wafer check valves. API 609 double-flanged and lug butterfly valves. Carbon steel and stainless. For Qatar process, utility, and cooling water piping.
API 526 · API 598
API 526 safety relief valves (SRV) for Qatar process & pressure vessels. Alloy steel globe control valves with pneumatic/electric actuators. SS & alloy needle valves for instrumentation.
Structural Steel & Sections
IPE/HEA/HEB I-beams, SHS/RHS/CHS hollow sections, equal angles, channels, flat bars, and steel plates in S275/S355 (EN 10025), ASTM A36/A572, and high-strength grades — for Qatar construction, EPC, and offshore projects.
EN 10025 · S275/S355
IPE, HEA, HEB, and UB/UC sections in S275JR/J0/J2 and S355JR/J0/J2/NL. ASTM A36 and A572 Gr.50. For Qatar EPC project structures, offshore topsides, and industrial frames.
EN 10210 / EN 10219
Square (SHS), rectangular (RHS), and circular (CHS) hollow sections in EN 10210 hot-formed and EN 10219 cold-formed. S355. For Qatar industrial frames, pipe supports & offshore structures.
EN 10025 · ASTM A36
Equal & unequal angles, UPN/UPE channels, and flat bars in S275/S355. ASTM A36 available. Cut-to-length for Qatar EPC fabrication shops and construction projects.
EN 10025 · ASTM A516
Structural plates S275/S355, pressure vessel A516 Gr.70, ASTM A36 in 3mm–200mm. AR400/AR500 abrasion-resistant plate. S460/S690 high-strength. Cut to size for Qatar fabrication.
Aluminium Products
Aluminium sheets, plates, extrusions, hollow sections, and tubes in 1xxx–7xxx series — 5083-H116 marine grade, 6061-T6 structural, 6063-T5 architectural. For Qatar construction, offshore, marine, and fabrication applications.
EN 573 · ASTM B209
1050, 3003, 5083-H116 (marine grade), 5086, 6061-T6 flat-rolled sheets and plates. ASTM B209 / EN 573. Cut-to-size. For Qatar offshore, marine, and architectural applications.
EN 755 · ASTM B221
6063-T5/T6 and 6061-T6 extrusions: angles, channels, T-sections, H-sections, rectangular hollow sections, and round tubes. ASTM B221. Custom profiles available for Qatar projects.
ASTM B241 · EN 754
Seamless aluminium pipes in 6061-T6 and 5083. Round tubes in 6063-T5 for structural, mechanical, and Qatar offshore installations. ASTM B241. Available cut-to-length from Doha stock.
NACE MR0175 · ASTM
Inconel 625 (N06625), Incoloy 825 (N08825), Hastelloy C-276, Monel 400 (N04400), Alloy 20, Titanium Grade 2 & 5. Pipes, fittings, flanges & plates. Qatar sour service & offshore.
PPE & Safety Equipment
Full range of personal protective equipment and safety supplies for Qatar oil & gas project sites — all compliant with Qatar QHSE standards, EN 397, ANSI Z89.1, and QatarEnergy contractor requirements.
EN 397 · ANSI Z89.1
Industrial hard hats (EN 397, ANSI Z89.1), full-body harnesses (EN 361), lanyards, self-retracting lifelines, and fall arrest systems for Qatar oil & gas and construction sites.
EN 388 · EN 20345
FR (flame-resistant) and chemical-resistant coveralls, safety boots (EN 20345 S1P/S3), cut-resistant gloves (EN 388), welding gloves, and hi-vis vests for Qatar site requirements.
EN 166 · EN 149
Safety glasses, goggles & face shields (EN 166). Half/full-face respirators, disposable dust masks (EN 149 FFP2/FFP3), SCBA. Ear plugs & ear defenders for Qatar noisy environments.
ISO 7010 · OSHA
ISO 7010 safety signs and labels, first aid kits, spill kits, fire extinguishers, safety cones, barricade tape, and site safety consumables for Qatar oil & gas and construction projects.
Welding & Drilling Supplies
SMAW electrodes, MIG/TIG wires, sub-arc consumables, drill bits, drill collars, and downhole accessories — all AWS and ASME Section IX certified. Same-week delivery to Doha, Ras Laffan, North Field and offshore Qatar.
AWS · ASME Section IX
E6010, E6013, E7018 (carbon steel), E308L-16, E316L-16 (stainless), E309L (dissimilar), E2209 (duplex). AWS/ASME IX certified for Qatar QatarEnergy contractor weld procedures.
AWS ER · ASME IX
MIG/MAG: ER70S-6, ER308L, ER316L, ER2209 (duplex). TIG rods: ER70S-2, ER316L, ER625. Flux-cored (FCAW) & sub-arc (SAW) consumables. For Qatar pipeline & structural welding.
API 7-1 · IADC
Tricone (roller cone), PDC, and insert bits per API 7-1. IADC drill collars, stabilisers, subs, and casing accessories for Qatar onshore and offshore drilling operations.
General Industrial
Cutting discs, grinding wheels, wire brushes, and abrasives. Industrial fasteners, bolts, and washers. Hand tools and power tool accessories. General hardware for Qatar site operations.
International Standards for Qatar Projects
Every product supplied by Valiol Trading complies with international standards required by QatarEnergy, Ras Laffan operators, and Qatar EPC contractors.
Line Pipe — Grades B to X70, PSL1 & PSL2. Qatar gas transmission.
Seamless CS Pipe for high-temperature Qatar refinery & process service.
Austenitic SS Pipe — 304L, 316L, 321 for Qatar corrosive service.
Duplex 2205 & Super Duplex 2507 — Qatar offshore & sour gas.
Pipe Flanges Class 150–2500, all facing types. Qatar piping systems.
Factory-Made BW Fittings ½″–72″. Backbone of Qatar piping.
Pipeline Ball & Gate Valves. QatarEnergy approved brands in stock.
Cast Steel Gate Valves for Qatar oil & gas isolation service.
Sour service — North Field, offshore & acid gas Qatar applications.
3.1 MTC standard on all orders. 3.2 available for QatarEnergy EPC.
Forged Fittings Class 3000–9000. Qatar instrument & small-bore piping.
Branch Fittings (Olets). Qatar gas header & pipeline branch connections.