Explore our premium certified fasteners built to perform under demanding industrial conditions, including shipbuilding, marine engineering, and extreme temperature environments.
Delivering precision-machined elements backed by strict quality verification systems and extensive raw material inventories.
We have formulated the most stringent sampling inspection system, utilizing automated dimensional verification and chemical validation so as to strive to achieve zero defects for the products leaving our factory.
At present, our entire group has more than 100 utility model patented products and eight invention patented products, driving innovation in advanced alloy machining and metallurgical treatments.
We currently operate nearly 100,000 product models, with 500 tons of special raw materials in stock and 10,000 tons of finished stainless steel standard parts in stock, ensuring minimal lead times globally.
Beiersdorf Industrial Technology (Shanghai) Co., Ltd. was established in 2015 and is located in Shanghai, China. It is an enterprise mainly engaged in the design, development, and high-volume manufacture of special fasteners and ultra-high precision components.
“Product quality is the foundation for an enterprise's survival.”
“Heart to sunshine, everything to prosperity”
Our material sourcing and precision heat treatments enable operation across a wide thermal and physical spectrum.
Deep cryogenic resilience
Optimized strength-to-weight
High wear & oxidation resistance
Superalloy structures
High-volume industrial demands
Extreme shear load capability
Thermal stability and structural hold
Custom alloys on demand
An architectural breakdown of mechanical alignment, structural loads, and global manufacturing standards.
Double-ended dowel pins represent a critical evolutionary step in mechanical engineering alignment. Unlike standard cylindrical alignment pins that rely on one-sided interference fits, a double-ended dowel pin features chamfered, threaded, or custom-turned configurations at both terminals. This dual-ended configuration permits simultaneous, secure, and highly accurate positioning of two adjacent mating faces under rigorous shear loads. In heavy machinery assemblies, turbine castings, and high-frequency vibro-acoustic environments, these precision elements act as the primary load-bearing members that prevent lateral movement without compromising the integrity of primary threaded fasteners.
Key Mechanical Insight: By separating the alignment function from the clamping force (which is handled by high-strength bolts), double-ended dowel pins ensure that structural joints remain perfectly concentric, mitigating shear stress concentrations that lead to catastrophic fastener fatigue.
Modern industrial operations require materials capable of withstanding physical stress and chemical exposure. Below, we detail the core alloys utilized in our manufacturing process, tailored to specific thermal and mechanical performance thresholds:
For cryogenic applications such as liquefied natural gas (LNG) transport vessels and space launch systems, we supply custom low-temperature fasteners certified down to -270°C. Under these extreme cold states, standard metals undergo a ductile-to-brittle transition. Our proprietary low-temperature heat treatment processes keep the crystalline structure ductile, avoiding catastrophic brittle fracturing under sudden impact loads.
Precision-made structural components designed to handle specialized tasks across all major industrial sectors.
Our fasteners are deployed in mission-critical structures where safety, reliability, and precision alignment are mandatory.
Our special fasteners and double-ended pins are widely used in shipbuilding and marine engineering, specifically in the manufacture of special ships, marine propulsion units, marine accessories, yacht manufacturing, offshore oil drilling platforms, submarine pipelines, offshore wind turbine foundations, submarine lifeboats, port machinery, and dock constructions.
These fasteners are manufactured in strict compliance with CCS (China Classification Society) guidelines, and are available in grades such as A4-80, A5-80, D8-80, D6-70, 2205 Duplex steel, L7, 40CrNiMoA, Inconel 718, and EN14399 steel structure connection pairs.
View More Application Details
Precision is the primary metric governing high-end industrial fastening. Double-ended dowel pins require strict adherence to Geometric Dimensioning and Tolerancing (GD&T) principles. The manufacturing tolerances are maintained at micron levels (+/-0.001mm to +/-0.005mm depending on customer request). Our production floor operates in strict compliance with globally accepted mechanical standard frameworks:
Custom double-ended pins can be manufactured with distinct configurations on each side (for example, one end designed as a slip fit, while the opposing end utilizes an interference press fit). This complex geometrical configuration requires precise dimensional verification. By keeping the surface roughness profile below Ra 0.2, our production line minimizes friction during installation, preventing galling or seize-up under high contact stress.
In addition to basic metallurgical sourcing, surface treatment is a key factor in extending the operating life of double-ended dowel pins in high-moisture or chemical environments. We offer a comprehensive suite of finishing treatments, including:
Positioned globally from our main logistics hubs to ensure continuous raw material supply and rapid response delivery.
Global Service Hubs
As the manufacturing landscape shifts toward Industry 4.0, the fastener industry is transitioning from passive mechanical locking parts to active components. Our technology roadmap focuses on three main developments:
Integrating micro-sensors into high-strength bolts and alignment systems to transmit structural loading data wirelessly, allowing engineers to track fastener integrity during operational stress.
Developing lightweight plastic and specialized titanium structures with complex internal pathways, optimizing internal geometries to reduce mass while maintaining shear capabilities.
Transitioning away from heavy metal plating to zinc-flake and water-based ceramic finishes, maintaining high salt spray resistance while ensuring complete compliance with REACH and RoHS standards.
Answers to common questions regarding tolerances, material selection, and installation protocols.
Shear load capability is calculated based on the pin's cross-sectional area and the ultimate shear strength of the chosen material (typically estimated as 60% of the material's ultimate tensile strength). Hardened alloys like 40CrNiMoA provide high shear load limits, whereas lightweight plastic options are selected for isolation and light alignment applications.
For high-corrosion applications, we recommend A4-80 or A5-80 marine grade stainless steel, or Super Duplex 2205. These materials offer high resistance to pitting and stress corrosion cracking (SCC) in saltwater environments, backed by CCS certification.
Utilizing high-end cylindrical grinding equipment, we achieve dimensional tolerances down to +/-0.001mm (1 micron). This precision level is essential for high-frequency electronics, aerospace assembly, and medical equipment alignment.
A double-ended chamfer facilitates smooth insert alignment from either direction, reducing assembly time in automated production lines. It also prevents damage to mating surfaces during blind installation.
Plastic fasteners made from materials like PEEK or PVDF are lightweight, chemical resistant, and non-magnetic. While they carry lower shear limits than high-tensile steels, they are ideal for electronics and chemical processing equipment where isolation is required.
Our low-temperature materials undergo specialized grain refinement and heat treatments to prevent the transition from ductile to brittle states. This ensures the pins maintain impact toughness in cryogenic installations.
Hash Detection involves ultrasonic testing, chemical analysis, metallurgical evaluation under high magnification, and 3D coordinate measurements to ensure every product matches the specifications before delivery.
Yes. Over 60% of our production consists of custom-engineered designs tailored to specific customer specifications, including custom thread patterns, stepped diameters, and specialized materials.
We maintain an inventory of 10,000 tons of standard parts and 500 tons of raw materials. This allows us to offer scheduled deliveries and rapid dispatch to prevent supply line disruptions.
Shipbuilding fasteners are supplied with full material traceability reports, EN 10204 3.1 certificates, and Classification Society Approval (CCS) to verify compliance with marine regulations.
Stay informed on global fastener trends, warehouse upgrades, and engineering innovations.
As we step into 2025, the future of fasteners is poised to undergo significant transformation, driven by high-tech materials and sustainable manufacturing practices worldwide.
Read More
To meet growing global demand, Beiersdorf has announced a comprehensive upgrade to its logistics facilities to shorten lead times and improve inventory management.
Read More
Founded in 2015 in Shanghai, Beiersdorf is a global provider of specialized fastener solutions designed for complex industrial applications.
Read MoreBeiersdorf provides both special fasteners and technical consultation, including early-stage design, material selection, and post-installation support.
Need a Consultation? Contact Us 24/7
Explore our premium certified fasteners built to perform under demanding industrial conditions, including shipbuilding, marine engineering, and extreme temperature environments.
BSF
