Hello: Cangzhou stem into a steel tube Co., Ltd., specializing in the production of carbon steel seamless pipe sales implementation GB/T8162/GB/T8163/GB/T3087 American Standard: ASTMA106/A53 GRB / API 5L/DIN German standards and customer requirements, to provide a standards of seamless steel pipe, oil casing pipe pipeline, another franchise of hot-rolled steel pipe, straight seam (ERW) steel pipe and spiral pipe. the companys advanced process equipment, detection means complete. Possesses advanced testing equipment: X-ray testing, ultrasonic testing