Woodfield Systems [India] Pvt. Ltd. Offers Chemical Loading and Unloading Arms for Road Tankers. Woodfield Systems [India] Pvt. Ltd. Is an ISO 9001:2000 accredited company. The Chemical Loading and Unloading Arms are used for loading/ unloading road tankers or rail cars of chemicals and acids by using specific materials determined on a case-by-case basis, depending on the product being handled i.E. Alcohol, sulphuric acid, corrosive chemicals & acids.