The US Greenbrier Companies expects to begin the delivery of 1,200 railroad tank cars to Saudi Railway Company before the end of 2016.
Greenbrier received the order in 2015. The rest of the tank cars are to be delivered in 2017 and 2018.
The tank cars will be used for the transport of molten sulphur and phosphoric acid by the state-owned mining company Maaden at the Waad al-Shamal Industrial City in the Sirhan-Turaif region of northern Saudi Arabia.
The contract is estimated to be worth between $130m and $190m, calculated based on the total volume and value of orders published by Greenbrier in 2015.
Greenbrier said in 2015 that it intends to build the tank cars at its wholly-owned Wagony Swidnica subsidiary in Poland.
Track dimensions in Saudi Arabia are identical to those in the US, and the tank cars will be built to US standards, Greenbrier said.
The last known contract awarded to Swidnica in the Middle East was in 2004, when Iraqs Coalition Provisional Authority (CPA) placed an order for 240 railroad flat platforms.