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Alloy steel plates in Saudi Arabia are mainly ASTM A387 chromium-molybdenum plates for hot vessels, reactors, drums and exchangers in refineries, petrochemical plants and power stations. This page covers grades 11, 22 and 91, class 1 and 2, heat treatment, Aramco rules, SABER, and what drives price and lead time.
Jubail Industrial City has long been tied to steel and heavy fabrication. Saudipedia describes the city's core as petrochemicals and primary industries, and industry press has long linked the city with SABIC's Hadeed steel operation. Plants of that scale create steady demand for metals and fabrication work: steel products, pipe fittings and flanges, pressure vessel fabrication and structural steel fabrication for plant expansions and maintenance.
Process plants ask for carbon and alloy steel pipe, stainless steel in corrosive duties, and fabricated spools, tanks and pipe racks built to client codes. Piping spools and pressure parts usually need material test certificates, weld procedures and third party inspection. Hot dip galvanizing and powder coating matter in a coastal, humid climate where corrosion is a daily concern.
Stockists, cutting shops and fabrication yards operate inside Jubail Industrial City and in the wider Eastern Province, with heavier workshops also in Dammam. Plate, pipe and sections arrive through the King Fahd Industrial Port, the commercial port, or by road, and the Mawani works reported in November 2023 add a rail link between the two ports. Large pieces such as vessels leave the yard on low bed trailers, so check the route and the escort plan before you agree a delivery date.
Practical tips for buyers:
You can send a drawing pack to several workshops through post a requirement and compare scope, lead time and inspection terms.
Jubail is a planned industrial city before it is a town. The Royal Commission for Jubail and Yanbu, created in 1975, develops and runs Jubail Industrial City on the Arabian Gulf coast of the Eastern Province. Saudipedia names SABIC as the main owner of the industrial complexes and says 13 of its 16 Saudi production plants stand here, alongside Saudi Aramco Total Refining and Petrochemical Company (SATORP), Advanced Petrochemical Company and Jubail United Petrochemical Company. The older estate is often called Jubail 1. Jubail 2, whose foundation stone was laid in 2004, was planned in stages, with about a quarter of its area reserved for industry and a primary zone for chemicals such as methanol, ethylene oxide and ammonia, according to a 2018 trade report.
The Commission reported that investment across its industrial cities passed SAR 1.5 trillion (about USD 400 billion) by the end of 2025, and Saudipedia says it has set aside SAR 67.5 billion to double the city's area by 2030. Smaller fabricators, workshops and service firms cluster around the main plants, because the big complexes buy maintenance and contract labour continuously.
The Port of Jubail is two harbours under Mawani, the Saudi Ports Authority. King Fahd Industrial Port, opened to serve the industrial city, handles bulk and plant cargo, and Jubail Commercial Port handles general, container and bulk cargo. Saudi Global Ports, a PIF and PSA International venture, holds a build-operate-transfer contract for multipurpose terminals at four Eastern Province ports including both Jubail harbours. In December 2025 Mawani announced a land lease of more than SAR 500 million to a chemical terminal operator for 70,000 cubic metres of chemical storage at Jubail Commercial Port. Dammam is about 100 km south by road, and trucks and rail carry cargo on to Riyadh.
Inside the industrial city, the Royal Commission allocates land, supplies infrastructure and approves investors. Power, water and seawater cooling come from Marafiq, the utility for Jubail and Yanbu. Fire and life safety approvals come from the General Directorate of Civil Defense, medical products need the Saudi Food and Drug Authority, and customs entries are handled by ZATCA. Confirm the current steps with each body before signing.
Petrochemicals, refining and chemicals buy pumps, valves, instruments, coatings, gases and maintenance services on shutdown calendars. Utilities and the port buy electrical and marine equipment. Construction and housing demand follows the expansion programme.
