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Alloy steel pipes in Saudi Arabia are mainly seamless chromium-molybdenum pipe to ASTM A335, used for steam, hot hydrocarbon and hydrogen lines at Jubail, Yanbu and Ras Tanura and in power plants. This page covers P11, P22 and P91, testing and certificates, Aramco rules, SABER, humid coastal storage, and price and lead time.
Riyadh is where most of the kingdom's construction and factory building happens, so metals and fabrication demand is driven by buildings, warehouses and infrastructure rather than oil export plant. Buyers order carbon steel pipes, structural steel fabrication, stainless steel plates, hot dip galvanizing and flanges, plus sheet metal and laser cutting for equipment makers.
The Second Industrial City on Al-Kharj Road and the older Industrial Area hold most fabrication shops, with stockists for plates, beams and sections around them. One listed Saudi welded pipe maker reports two factories in Riyadh with a combined capacity of about 160,000 tonnes a year, making longitudinal submerged arc welded and high frequency welded pipe for oil and gas, structural and commercial use, so large diameter line pipe is available from a Riyadh plant rather than only from the Eastern Province. Riyadh also has several local fabricators offering steel work, ductwork and pipe spool fabrication and erection, according to company listings.
Ask for mill test certificates with heat numbers for every plate or pipe lot, and match the grade on the certificate to the drawing. For structural work, confirm the fabricator's welding procedures and welder qualifications, and whether it can galvanize or paint in house or must sub-contract. Imported steel products must meet the Saudi technical regulations applied through SASO, so confirm the conformity paperwork with the stockist. For pressure piping, see our guide to pipe fittings and flanges standards.
Plate and coil arrive from Jubail and Dammam mills and from imports through Dammam and Jeddah, by truck and by the freight line from the Eastern Province. Riyadh summer heat and dust matter for coating: ask how long blasted steel waits before primer. Send one bill of quantities to several yards through post a requirement and compare delivered, cut-to-length prices.
Riyadh is a capital before it is an industrial centre, so its factories sit in planned estates on the edge of the built-up city rather than in the middle of it. The authority behind most of them is the Saudi Authority for Industrial Cities and Technology Zones, known as MODON, which also leases ready-to-use factory units. Riyadh Second Industrial City, to the south along the Al-Kharj road, is the long-standing manufacturing district; a 2013 report on the opening of ready-made small factories there shows how early MODON used it for small and mid-size manufacturers. Next to it, Al-Tatweer Private Industrial City, licensed in 2007 and renamed in 2020, targets electrical, food and building-materials plants. Sudair City for Industry and Businesses in the wider Riyadh region is one of the cities MODON named as a leading food and beverage manufacturing location in 2023.
Inside the city, older trading and workshop districts handle spare parts, tools and small fabrication, while warehouse stock has grown to about 28.9 million square meters, according to a Knight Frank review reported in October 2025.
Riyadh has no seaport, so imports arrive through Dammam, Jubail or Jeddah and then move inland. The Riyadh Dry Port, run under a concession by Saudi Global Ports, is linked by rail to King Abdulaziz Port in Dammam, King Fahd Industrial Port and Jubail Commercial Port, and Ras Al-Khair Port. In April 2024 Mawani reported the first container shipment by rail from Jubail Commercial Port to the dry port, 78 containers on one train. Trucks carry the remainder along the main highways, and air freight moves through the capital's airports. Ask your forwarder which leg is faster for your cargo, since customs clearance by ZATCA can happen at the port or at the dry port.
MODON and the Ministry of Industry and Mineral Resources deal with factory land and licences. The Royal Commission for Riyadh City leads the city's large programmes, including the Riyadh Metro and the main road axes. Building permits follow the Saudi Building Code through the municipality, and fire and life safety approvals come from the General Directorate of Civil Defense. Medical devices must be authorised by the Saudi Food and Drug Authority. Confirm the current steps on each authority's own platform before you sign a contract.
Construction leads, driven by the metro, King Salman Park and the New Murabba downtown, which was announced with a completion target of 2030. Healthcare follows, with three public health clusters. Food, packaging and electrical plants buy machinery for the estates, and data centres, offices and hotels buy cooling, power and facilities services. Heavy oil, gas and petrochemical demand is stronger in the Eastern Province.
