Chung Shun Industrial Group Co., Ltd. Tianjin Tel :022 -6,850,959,528,896,280 (large steel pipe, welded pipe, spiral welded pipe, hot-rolled steel pipe, hot expanded steel pipe production base) is located in Tianjin 9 Daegu Town ten billion, the company accounted for land area of 11 square meters, construction area of 9800 square meters, registered capital of 95 million. Our annual production and sales of steel (in strict accordance with GB/T3091-2001 low pressure liquid delivery standards for welded steel pipe production Φ133-Ф273, the Longitudinal wall thickness 1.8mm-14mm; strict accordance with the standards of production GB/T9711.1-1997 Spiral Ф219-Ф720, wall thickness 5.0mm-10mm; in strict accordance with the production of hot-rolled steel GB/T8163-1999 standard, thermal expansion pipe Φ133-Ф529, a variety of wall thickness).