Revolutionizing Stainless Steel Lunch Box Production with LN28S Hydraulic Presses & LN98 Water-Bulging Technology

At Foshan Lineng Hydraulic Machinery Co., Ltd., we believe that true success comes from close collaboration with our customers. Today, we’re excited to share the story of our partnership with Metking International PVT LTD and their ongoing lunch-box and cookware production project in Jaipur, India.

Understanding the Challenge

Metking needed to upgrade their stainless-steel lunch-box line for higher precision, energy efficiency, and reliable support. Their requirements included:

  • Three hydraulic stretching presses (130T, 170T, 200T)
  • A 300T water-bulging press for seamless hollow forming
  • Precision molds for three-, two-, and single-compartment lunch-boxes
  • An 800-series lamination machine for protective film application

Meeting a daily output of 1,000–1,500 units of 0.5 mm 304 SS panels called for equipment that delivers consistent performance, minimal downtime, and a low total cost of ownership.

Tailored Solutions from Lineng

Leveraging over 20 years of R&D expertise led by our founder—a former Chief Engineer at Yongheng Hydraulic—we designed a turnkey package:

  1. Servo-Driven Stretching Presses (LN28S-130, -170, -200)
    • Inovance servo motors and drives for ±0.1 mm repeatability
    • Rapid approach, precise working speed, and fast return
    • Four-column, stress-relieved frames for long-term rigidity
  1. 300T Water-Bulging Press (LN98-300T)
    • Standard motor drives a robust oil-to-water amplification system
    • Achieves up to 50 MPa water pressure for flawless forming
    • Eliminates tooling marks and wrinkles in thin-wall parts
  1. High-Precision Molds & Lamination
    • Multi-stage draw, trim, and flange molds matched to Metking’s specs
    • 800-series laminator for durable, crystal-clear film
    • Collaborative prototyping and rapid testing cycles
  1. Dedicated Support & Service
    • Transparent factory-direct pricing with flexible deposit and refund arrangements
    • 35-day delivery lead time from deposit to factory readiness
    • 12-month warranty on all equipment and key components
    • 24×7 remote technical support plus optional on-site commissioning

Building Trust, Delivering Value

From our first video call to the recent factory tour in Foshan, the Metking team and our engineers have worked in lockstep:

  • Fine-tuning machine settings for 0.45–0.6 mm 304 SS material
  • Coordinating mold design with trusted tooling partners
  • Organizing site visits to punch-press and mold-making facilities for full supply-chain transparency

The result? An energy-efficient production line ready to boost Metking’s output and quality—while keeping costs in check.

Looking Ahead

As Metking International ramps up their lunch-box and GN-pan manufacturing, we’ll continue to provide parts, software updates, and hands-on training. Together, we’re not just delivering machines—we’re engineering a path to long-term growth and reliability for India’s burgeoning cookware market.

We look forward to celebrating Metking’s first production run and many more milestones ahead. Here’s to a partnership built on trust, innovation, and shared success!

— The Lineng Team

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