A new 3-roll cross tube mill with the largest calibre of its kind in China has been successfully hot commissioned at VALIN Hengyang’s steel plant in the Hunan Province.

The entire design, manufacture and assembly of the mill has been carried out by CISDI.

Full digital designs were applied, from conceptual design to modelling, product and component design and deliverable control.

Main products to be produced are seamless steel tubes for high-pressure boiler structures, fluid transportation, hydraulic posts, petroleum machinery processing, oil cylinders and crane arms.

By optimising the original process flow, Hengyang’s new mill will boost the production quality, cost effectiveness and profits of the entire rolling line.

Highlights are:

✔        CAE-based simulation software analyses critical components, alongside the CISDI-developed process control model, super-high-pressure hydraulic control for quick roll opening, alternating heavy-load stability control, and large-flow hydraulic retaining control technologies.

✔        Advanced pass design and setup systems enable parameters to set automatically.

✔        Digital designs and digital deliverable control ensures optimum, high-precision product quality.

CISDI is a specialist supplier of steel tube manufacturing and construction in China. Its standardised, refined design, manufacturing, assembly, EPCM, and research and development capabilities have led to the development of multiple stand-out full life-cycle projects in China.

Star projects built by CISDI in the last five years include:

✔        Fengbao Pipe Industry’s dia. 89mm tube mill package supply

✔        Dalipal Pipe Co’s dia. 159mm tube mill on an EPC basis

✔        VALIN Hengyang’s dia. 89mm tube mill rebuild supply

✔        Chengde Steel’s dia. 127mm tube mill package supply.

CISDI’s major breakthroughs in core equipment developments include:

✔        Lateral-open 3-roll multi-stand tube mill

✔        Single-stand-driven, heavy-tension reducing mill

✔        Vertical, tapered-roll piercing mill

✔        Tube straightening mill.

CISDI’s Jiangjin-based manufacturing company plays a pivotal role in supporting CISDI’s HQ’s process and R&D innovations and implementing all supplies for critical manufacture and spare parts.

The 3-roll cross tube mill now in operation at VALIN Hengyang was entirely designed, manufactured and assembled by CISDI

CISDI team celebrate hot commissioning at the new mill