In the realm of modern industrial infrastructure, safety, durability, and cost-efficiency are no longer optional—they are foundational. As a premier Bar Grating Treads Manufacturer & Factory, Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) has spent three decades refining the intersection of metallurgy and engineering. This document explores the critical factors that global enterprises must consider when sourcing stair treads, ranging from material compliance to supply chain resilience.
Our status as a leading manufacturer is rooted in the Craftsman Spirit. Unlike traditional factories, NJMM leverages advanced AI-driven manufacturing protocols and robotic precision. Our facilities integrate 12 self-developed automatic pressure welding lines, ensuring that every crossbar is molecularly fused to the bearing bars, providing maximum structural integrity under cyclic loading.
6 sets of automatic banding robots and 2 sets of irregular grating fabrication platforms ensure zero-defect geometry even for the most complex architectural stairs.
Our surface treatment exceeds ASTM A123 standards, providing a zinc coating that offers decades of anti-corrosion protection in harsh marine and chemical environments.
Certified by ISO9001:2015, ISO45001:2018, and CE. We don't just follow standards; we help draft them, including the YB/T4001 steel grating standard.
The global steel market is volatile, yet China remains the epicenter of supply chain stability. As a top-tier factory, NJMM provides "Information Gain" to procurement managers by offering transparency in raw material sourcing and logistics optimization.
Industrial needs vary by geography. Whether it's the high-salinity offshore rigs in the North Sea or the dusty mining operations in Western Australia, our bar grating treads are engineered for specific localized stressors.
High ventilation and non-slip serrated surfaces are critical for safety in refineries (Recommend: JG325/30/100).
Ceiling gratings and ventilation screens for modern urban centers, combining aesthetic appeal with heavy-duty performance.
Heavy loading capacity (JG1008/30/100) for port terminals and military engineering projects globally.
The industry is shifting toward Green Manufacturing and Digital Twin Integration. NJMM is at the forefront, having obtained "Green Factory" status in 2021. We are exploring lightweight aluminum alloys and high-strength composite coatings to meet the evolving demands of the aerospace and renewable energy sectors.
Green Steel: Reducing carbon footprint through recycled content and energy-efficient induction welding.
Smart Logistics: Real-time tracking of shipments from our Ningbo base to your project site, ensuring JIT (Just-in-Time) delivery.








To provide top quality products & services with global expertise; To build a harmonious environment for employees growing together; To contribute to industry advancement.
NJMM markets to South America, Europe, Oceania, Africa, West Asia, Southeast Asia, and the Middle East, covering all major industrial hubs.
450,000 sqm area with 30,000 sqm workshop. 12 auto-pressure welding lines ensure an output capacity exceeding 50,000 tons annually.