The Seattle market represents a unique intersection of heavy maritime industry, aerospace manufacturing, and a rapidly expanding tech infrastructure. As a leading global supplier, Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) understands that providing stair treads to the Pacific Northwest isn't just about shipping metal—it's about meeting the rigorous demands of a moisture-rich environment and stringent seismic building codes.
With major players like Boeing and the Port of Seattle, the demand for high-load, anti-slip stair treads is at an all-time high. Our JT series provides the durability needed for high-traffic industrial zones.
Seattle's average 150 days of rain per year require superior hot-dip galvanization. Our products exceed ISO 1461 standards to prevent oxidation in saline and humid coastal air.
Fully compliant with IBC (International Building Code) and OSHA safety standards, ensuring that every project from Renton to Kent meets local safety inspections.
Direct factory-to-port logistics. By leveraging our Ningbo production base, we offer Seattle firms a 30% cost advantage without compromising on lead times.
Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) was founded in 1993, is mainly engaged in the design and manufacturing of steel grating, railings, platforms and other light steel structures. It is a modern comprehensive enterprise integrating scientific research and design, machinery manufacturing and engineering construction.
We currently have 2 production bases in the East and North of China, there are 12 steel grating auto welding product lines, as well as complete auxiliary processing equipment and testing facilities, like robots welding, laser cutting, digital control panel tailoring etc. Our annual output of steel gratings and allied products, including trench covers, stair treads, stanchions, handrails, fences, is over 50,000 metric tons.
Square Meters Base
Auto Welding Lines
Tons Annual Output
Years Excellence
Unlike standard suppliers, NJMM utilizes pressure-lock technology and automated forge-welding. For Seattle's seismic zones, the structural integrity of a stair tread is paramount. Our JT-series features a unique load-bearing bar geometry that offers 15% more lateral stability than standard industry treads.
Shipping from Ningbo to the Port of Seattle/Tacoma is one of the most efficient global trade routes. We provide real-time tracking and DDP (Delivered Duty Paid) options for large-scale infrastructure projects in Washington State.
Safe walkway solutions for Anacortes and Ferndale refinery complexes.
Ventilated steel flooring for server farms in the Quincy and Seattle areas.
Corrosion-resistant stair treads for vessel maintenance and dockside platforms.
Staircases and walkways for Sound Transit and regional bridge projects.
Partner with NJMM for world-class engineering, competitive global pricing, and reliable local Washington delivery.
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