We, Tianjin An Sheng Da Import & Export Co. Ltd are the trading company of engaging in tubular goods for oil field business in Tianjin, China, we would like to cooperate with you on the possible project. We always welcome your any enquiry to us at any time. We established with many qualified mills (API 5CT, API 5L, API 5D) in China who can produce the casings, tubings, couplings, thread protectors, drill pipes, line pipes, carbon steel pipes, and so on. And we also supply the oil field equipments such as mud pumps, valves, fittings, drill pipes collars, and so on. Our products not only sold to domestic market, but also exported to many foreign countries, such as, USA, Canada, Kazakhstan, Russia, Turkey, Indonesia, Yemen, KSA, Iran or other main oil fields regions. We always offer our clients with reliable, convenient, fast, mutural benefit service. We will reply to you within 24 hours whenever any enquiry reach us. We sincerely hope to establish cooperative long-term relationship with your company. Many thanks for your kind attention to us.