Woodfield Systems [India] Pvt. Ltd. Offers Jacketed Loading Arms- JLA. Woodfield Systems [India] Pvt. Ltd. Is an ISO 9001:2000 accredited company. The Jacketed Loading Arms- JLA are used for loading road tankers or railcars of products such as molten sulphur, waxes, resins, bitumen etc which has high viscosity, high temperature, and / or crystallization / solidification properties. The Jacketed Loading Arms- JLA is available with electric, steam or oil heating and insulation which maintains the product at required temperature uniformly.