15 Years Focus on Hardware Plugs & Fittings Manufacturing
A modern hardware enterprise integrating R&D, production, customization and sales, providing high-precision and durable hardware solutions for hydraulic manifolds, power units, engineering machinery, shipbuilding and other industries.
Years of Experience
Production Equipment
㎡ Factory Base
Cooperative Clients
15 Years of Deep Cultivation in Hardware Industry, Focused on Technological Innovation and Quality Service
Located in Yuyao City, Zhejiang Province, Ningbo Xilun Trading Co., Ltd. is a leading manufacturer of oil plugs in China. Covering over 6,000 square meters, the company has 5 production workshops including cold heading, hot forging, automatic CNC, rolling and assembly, equipped with more than 200 CNC machines and 20 automatic 3-axis rolling machines. Meanwhile, the factory is equipped with projectors, Rockwell hardness testers, Vickers hardness testers, torque wrenches, roughness meters, coating thickness gauges, universal tensile testing machines, salt spray testing machines, hydraulic blasting test benches and other testing equipment to support product quality control.
Products & Services: Full Range Coverage, One-Stop Procurement
Our products have passed ISO9001 quality management system certification. Core products include stainless steel plugs and carbon steel plugs with an annual output of 80 million pieces. With comprehensive specifications, products mainly include German standard, American standard, national standard plugs, as well as Parker, Eaton, Yonghua, Henry series plugs, meeting diverse needs of customers in different industries and realizing "full range, full standard" one-stop procurement service.
Advanced Equipment + Standardized Production Process Ensure Product Precision and Delivery Efficiency
Carbon steel galvanized ED seal plug is an industrial standard part for pipeline/equipment port sealing. Built-in ED special sealing ring (NBR/FKM material), forming double sealing with thread, leakage prevention performance far exceeds ordinary thread plugs
Carbon steel galvanized O-ring seal plug is a universal standard part for industrial port sealing. With carbon steel as base material, galvanized anti-corrosion, O-ring as core seal, simple structure, oil-proof, waterproof and anti-corrosion
Headless design + hexagon socket drive, no external space after installation, perfectly suitable for internal ports such as gearboxes, hydraulic manifolds, engine blocks, solving the problem of protrusion of ordinary plugs
Every product undergoes strict quality control
Test composition and hardness of copper/stainless steel/carbon steel to ensure base materials meet plug application standards
12 quality inspection checkpoints from raw material incoming to finished product delivery, using high-precision testing equipment to ensure product accuracy and performance
Provide warranty service, 24-hour after-sales response, professional technical team provides support and solutions
Work with leading enterprises to create value
Insight into industry trends and latest company updates
In industrial piping systems and mechanical equipment sealing fields, plugs, as sealing fittings, their material strength and corrosion resistance directly affect the safe and stable operation of equipment. As a professional factory focusing on plug R&D and production, Aohong always takes quality as the core. We mainly select high-quality raw materials such as 35#, 45#, 304 stainless steel, and 316 stainless steel for production.
In 2024, Chuanna Hardware Products Co., Ltd. focused on investing in 12 automated product assembly machines with the three core goals of "improving productivity, reducing loss, and ensuring quality". These machines are specially used for assembling ED rings and thread protectors on plugs, aiming to solve a series of problems existing in traditional manual assembly.
In industrial pipeline and equipment oil circuit sealing applications, the selection of plug material directly affects service life, safety, stability, and cost control. As a factory specializing in plug production, we often receive inquiries from customers: "What material should I use for normal working conditions?" "Should I choose 304 or 316 for corrosive environments?" Today, taking our core materials—35# carbon steel, 304 stainless steel, and 316 stainless steel as examples.
Amid the increasingly fierce competition in the hardware manufacturing industry, Aohong Hydraulics, focusing on the plug segment, is breaking through development bottlenecks through equipment upgrades. With the continuous growth of downstream market demand, the demand for O-ring plug products from our cooperative customers has increased significantly, and the requirements for product precision and delivery cycles have become more stringent.
