Zhongke Petroleum Equipment Co., Ltd, located in Dongying City which is famous for Shengli oil field and manufacture base of petroleum equipments, is a professional supplier for various petroleum equipments. Our main products include casing, tubing, sucker rod, drilling pipe, drilling bit, ERW pipe, mud pump, pumping unit, drilling rig and their spare parts in different steel grades and specifications ect. All the products are API certified. Now we are exporting large quantity to worldwide with high quality and reasonable prices and become important supplier for some national petroleum company abroad.