Stainless Steel Hardware

The proper selection of Stainless Steel Hardware is a crucial step to ensure industrial safety and improve equipment reliability. Understanding their basic classification, key performance parameters and selection principles helps make scientific and rational decisions. In specific applications, factors such as safety grade, pressure, temperature and material should be fully considered in combination with the actual working environment. With years of machining experience, HAWEN is capable of manufacturing various types of pipe plugs and stainless steel fittings as required.

Product Specification

Product Application Fields

HAWEN (Trilon) has been deeply engaged in the machinery industry for more than 20 years. Since 2015, we have been manufacturing three-way joints, stainless steel pipe plugs, explosion-proof joints and various types of stainless steel parts. This product is precision-machined from 316L stainless steel, and our products are mainly applied in the following fields:

1.Petrochemical Industry: A large number of electrical equipment is used in petrochemical production. Given the extremely hazardous working environment of this industry, the use of explosion-proof union joints helps prevent fires or explosion accidents.

2.Coal Mining Industry: In coal mining, explosion-proof union joints can effectively prevent gas explosions caused by sparks and ensure the safe production of coal mines.

3.Automotive Manufacturing Industry: A great deal of electrical equipment is adopted in the automotive manufacturing process. The use of explosion-proof union joints can guarantee the safety and reliability of the production process.

Product Application Equipment and Main Customers

The above products are mainly assembled on various pneumatic pipeline joints of electrical equipment, with the core customer being Wolong.

Technical Parameters: 316 Stainless Steel Explosion-Proof Joint

Long-Term Partnership Value with HAWEN

Customers choose HAWEN for its stable, repeatable manufacturing capability and deep understanding of industrial system requirements. Beyond supplying components, HAWEN helps customers reduce uncertainty and total lifecycle costs through engineering expertise and automated production.

During the development stage, HAWEN’s technical team works closely with customers, evaluating operating conditions, system compatibility, structure, and material selection to ensure solutions meet performance requirements while remaining suitable for mass production. Fast R&D response enables customers to complete validation more efficiently and reduce time and cost associated with repeated trials.

In manufacturing, HAWEN operates a production system built on fully automated lines and online quality monitoring. Raw materials are controlled from the sourcing stage to ensure consistency. All critical machining processes are completed using high-precision automated equipment, with key tolerances such as inner bore tolerance consistently maintained at ≤0.005 mm.

Throughout production, online inspection systems monitor key parameters in real time, allowing immediate correction of deviations and eliminating instability caused by manual operations. This ensures high product consistency under large-volume production, with a process yield rate of 99.995% and 100% outgoing inspection.

Environmental responsibility and compliance are integrated into both material selection and manufacturing processes. Products are manufactured using 1215 low-carbon free-cutting steel to reduce harmful substances. Surface treatment is performed through a fully automated black oxide process, preventing manual contamination while improving corrosion resistance and reducing waste. All products comply with international environmental regulations, including ROHS and REACH.

HAWEN provides customized and special-shaped designs based on customer industrial system requirements, ensuring proper application fit and operational reliability while helping reduce development cycles, testing efforts, and manufacturing costs.

To ensure stable supply, HAWEN operates 10 fully automated production lines, supported by an automated surface cleaning line and an automated black oxide treatment line. Total monthly capacity reaches approximately 5 million units. Current monthly shipments range from 3 to 4 million units, leaving 40%–60% flexible capacity to respond quickly to market demand.

Located in Zhejiang Province, one of China’s major manufacturing regions, HAWEN benefits from a mature local supplier network with short procurement lead times and stable supply, providing customers with higher delivery reliability and greater flexibility for design changes.

By aligning manufacturing decisions with end-market requirements, HAWEN helps customers achieve cost efficiency, low-noise operation, high qualification rates, and environmental compliance.

Choosing HAWEN means reducing total lifecycle costs, including development, testing, manufacturing, and after-sales service.

Material Selection

316 stainless steel strip is an austenitic stainless steel material with the following chemical composition (mass fraction): C ≤0.08%, Si ≤1.00%, Mn ≤2.00%, S ≤0.030%, P ≤0.035%, Cr 16.00～18.50%, Ni 10.00～14.00%, Mo 2.00～3.00%. It features excellent corrosion resistance, high-temperature strength and machinability.

The material has a yield strength ≥205MPa, elongation ≥40% and density of 7.93g/cm³. After solution heat treatment (rapid cooling at 1010～1150℃), it is widely used in chemical vessels, food processing equipment, medical devices, marine engineering, architectural decoration and the manufacturing of automotive parts. Thanks to its molybdenum content, 316 stainless steel has significantly better pitting corrosion resistance than 304 stainless steel in chloride environments.

Process Control

Inner Bore Tolerance Control: Achieving a high precision of ≤0.01mm places extremely stringent requirements on processing equipment and process stability. Such a precise tolerance range demands top-tier accuracy of machining equipment (e.g., high-precision turn-mill compound machining machines), high-quality cutting tools, and stable process conditions (e.g., temperature control, vibration suppression, fixture accuracy); any minor deviation may result in product quality defects.We adopt advanced manufacturing processes to ensure this precision: realized through high-precision measuring instruments (e.g., Coordinate Measuring Machine (CMM), Roundness Tester, Profile Measuring Instrument), strict process control (e.g., Statistical Process Control (SPC)) and a stabilized machining environment, which guarantees batch production consistency.Application Value: In precision fitting environments, inner bore tolerance and flatness directly affect the mating accuracy between components, which is critical to assembly efficiency and product service life — it is a core technical indicator for high-end manufacturing.

We exercise strict quality control throughout the production process to ensure the stability and durability of products during use.

Material Performance Matching: Strictly control material hardness and surface treatment processes to effectively enhance wear resistance and service life.

Surface Treatment - Cleaning and Passivation

As the product is made of 316 stainless steel and operates in harsh environments, it is prone to rust and corrosion without proper treatment. Our company has a professional and experienced core R&D team; through years of practical experience and repeated trials, we have developed a dedicated surface treatment formula for this product, and adopted fully automatic passivation equipment integrated with a fully automatic drying system.

There is no manual contact with products throughout the entire process, which not only enhances the corrosion resistance of products to meet industry standards, but also reduces the risk of product collision caused by human contact and ensures the operational stability of products.

Other electroplating processes such as general electroplating, galvanizing and nickel plating are also available and can be fully customized according to customer requirements.

Environmental Requirements

All products meet strict environmental protection requirements in terms of raw material selection and surface treatment processes, and are supported by official ROHS and REACH certification reports.

R&D & Customization Capabilities

Our professional R&D and technical team has 20 years of in-depth industry experience. We can fully meet customer requirements, solve their technical pain points according to their specific application scenarios and demands, and customize special-shaped pulleys. We warmly welcome customization per provided drawings, including customized products with designated raw materials and surface treatment processes. We also extend a sincere invitation to overseas visitors to visit our manufacturing factory.

Synergy from the New Organizational Structure

The synergy brought by the new organizational structure enables HAWEN to fully meet customer expectations on the basis of in-depth and effective cooperation.

Domestic Customers

We have established long-term strategic partnerships with domestic customers such as Sanjiang Electric, LG Tianjin and Nidec, with a stable cooperative relationship spanning more than a decade.