Jiangsu ChangBao Precision Steel Tube Co., Ltd based in Changzhou in Jiangsu Province, China, has awarded SMS group the contract to supply a new, state-of-the-art PQF®(Premium Quality Finishing) seamless tube plant and related automation. Particular highlights of the scope of supply include various performance modules and a KR I 35/45 CNC groove dressing machine. This highly automated plant will enable ChangBao to meet the growing demand for precise, high-strength tubes on the local market.
The PQF® ordered will be used to produce tubes within a diameter range of up to 6 5/8 inches and wall thicknesses of between 4 and 20 millimeters. Its annual capacity is 300,000 tons of tubes. These are used in oil and gas production (OCTG tubes) and must satisfy very high quality and tolerance requirements in accordance with API standards.
With the Bilateral Change-Over -type PQF® plant, the stands are changed at both sides of the mill. The compact, easily accessible construction enhances the user-friendliness of the plant. The drive is simpler in design and is easier to service. In addition, the hydraulic capsules (hydraulic adjustment) are positively connected to the mill frame.
The order also includes the full automation of the machinery and plant sections, as well as state-of-the-art laser technology for measuring the wall thicknesses downstream of the PQF® and the stretch reducing mill (SRM). What’s more, the CaliView® measuring system developed by SMS group allows for fast, inline calibration of all rolling mills, and so guarantees the perfect alignment of the mill line over a period of time. A networked, CNC-based groove dressing machine (KR) for high-precision machining of the SRM stands will also be supplied.
