Profile: Xian Welong Foundry Co. Ltd. specializes in ferrous metals, gray iron, stainless, steel and specialist alloys. We offer gravity casting, centrifugal casting, forging products, fabricated products and ceramic products. We manufacture drilling equipments such as drill collars, heavyweight pipes, rotary subs, pup joints, stabilizers and drill stem accessories. Our ceramic products include ceramic textile articles, high-temperature resistant ceramics, acid-resistant chemical ceramics and heater carrier.