The main products of CANGZHOU YICHENG STEEL PIPE MANUFACTURE CO., LTD are seamless carbon steel pipes. The standards are ASTM A106 Grade B, ASTM A53 Grade B and API 5L. Tubing and casing API 5CT. The pipes which manufactured by us can be used for petroleum industry and other industries such as in petroleum refineries and oil fields, petroleum cracking, oil transport, high pressure boilers, medium and low pressure boilers, fluid pipes, special pipes for fertilizer making, structural pipes, hydraulic support pipes and so on.