Industrial Piping, Valves & High-Pressure Flanges
Khalid Surour Bin Qail Alrouqi Trading Est. (KST) delivers industrial-grade piping systems, high-pressure valves, forged flanges, and fittings engineered for demanding oil & gas, petrochemical, water treatment, and power generation facilities across Saudi Arabia.
We supply carbon steel, alloy steel, and stainless steel flow components sourced directly from approved international mills that comply with ASME, ASTM, and API specifications. All components come with certified MTCs (EN 10204 3.1) and complete metallurgical traceability.
Supplied Materials & Range
Our comprehensive piping inventory and procurement range includes:
Seamless & Welded Line Pipes
API 5L (Grade B, X42 to X70 PSL1/PSL2) and ASTM A106 / A53 Grade B carbon steel pipes from 1/2" to 48", Schedule 10 through XXS.
Industrial Process Valves
API 600 / API 6D gate, globe, check, ball, and butterfly valves in cast steel (WCB/WCC), forged steel (A105), and stainless steel (CF8M) up to Class 2500.
Forged Pipe Flanges
ASME B16.5 / B16.47 weld neck (WNRF), blind (BLRF), slip-on (SORF), socket weld (SWRF), and ring type joint (RTJ) in ASTM A105 and stainless 304/316L.
Buttweld Fittings
ASME B16.9 seamless carbon steel long-radius elbows (45°/90°), equal & reducing tees, concentric & eccentric reducers, and caps in ASTM A234 WPB.
Forged High-Pressure Fittings
ASME B16.11 Class 3000, 6000 & 9000 socket-weld and NPT threaded couplings, unions, 90° elbows, half-couplings, and swage nipples in ASTM A105.
Sealing & Fasteners
ASME B16.20 spiral wound metallic gaskets with flexible graphite filler, RTJ metallic rings, and ASTM A193 B7 / A194 2H stud bolts.
All piping and flow materials adhere strictly to international standards: API 5L, ASTM A106, ASME B16.5, ASME B16.9, ASME B16.11, API 600, and NACE MR0175 / ISO 15156 for sour service applications.
Supply Chain & Quality Commitment
With dedicated pipe yard capacity in the Eastern Province, KST maintains stock for fast-track shutdowns and routine replacement requirements, delivering safely across Jubail Industrial City, Ras Tanura, Yanbu, and Rabigh.
Frequently Asked Questions
Frequently asked technical questions regarding our piping, valve, and flange inventories:
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