structural lockbolt C50L type

Description

Product Overview
The structural lockbolt C50L type is a high-strength mechanical fastener engineered for critical structural connections in heavy fabrication and construction. Designed for permanent, vibration-resistant joints, it provides predictable clamping force and shear performance where welds or conventional bolts are unsuitable. Its key value proposition is a certified combination of tensile strength and fatigue resistance that reduces rework, shortens assembly time, and lowers total lifecycle cost. Strategically, the C50L addresses rising demand for reliable, low-maintenance fastening solutions across infrastructure, transport, and energy sectors where safety and uptime are non-negotiable.

Key Specifications & Technical Characteristics

• Material composition: High‑strength alloy steel (quenched and tempered), corrosion-resistant grade; optional stainless-steel variant available on request.

• Mechanical grade: C50L class — minimum tensile strength and yield consistent with structural lockbolt standards applicable to heavy engineering (specified test certificates available).

• Surface finish: Standard zinc/or galvanic coating for corrosion protection; hot-dip galvanizing or specialty coatings (e.g., epoxy, PTFE) available by order.

• Geometry: Controlled head profile and shank dimensions per specification (available in diameters 12 mm–30 mm; lengths per customer drawing).

• Hardness: Heat-treated to specified Brinell/Rockwell range for consistent performance (certified test reports supplied).

• Form: Manufactured as pre‑assembled lockbolt (pin + collar) ready for installation with standard tooling.

• Packaging: Bulk on pallets (cardboard separators and shrink-wrapped), steel crates for export, or per-customer kitting with protective finish and desiccant as specified.

• Traceability: Batch, heat-number, and mill-certificate traceability included with each shipment.

• Shelf life: Indefinite under normal dry storage; recommended storage conditions: ambient, <75% RH to preserve coatings and prevent surface oxidation.

Core Industrial Applications

• Primary industries: Structural steel fabrication, bridge and civil infrastructure, rail and rolling stock manufacturing, heavy machinery and equipment assembly, offshore oil & gas and wind-turbine foundations, and defense/armoured vehicle production.

• Specific use cases: Permanent high-load connections in girders and cross-members, vibration-prone joints in rail bogies, fatigue-critical assemblies in wind-turbine towers and offshore platforms, and rapid on-site assembly where welding is restricted.

• Performance advantages: Delivers consistent clamp load and controlled shear plane, reducing the risk of joint slippage and fatigue failure compared with standard bolts or rivets. Pre‑assembled design accelerates installation and reduces skilled labor dependence versus field welding. Durable surface finishes and alloy selection extend service life in corrosive or cyclic-loading environments.

• Commercial relevance: Lowers whole-life maintenance and inspection costs through higher fatigue life and predictable failure modes, enabling clients to meet safety regulations and reduce downtime.

Competitive Advantages

• Quality consistency: Manufactured under ISO-aligned quality management with certificate-backed batch testing (mechanical, dimensional, and coating verification).

• Supply reliability: Steady production capacity with prioritized scheduling for long-term contracts and safety‑stock programs to support project timelines.

• Logistics capability: Export-ready packaging, inland consolidation, and container loading plans optimized for 20MT bulk shipments; global shipping partners and customs documentation support available.

• Price competitiveness: Cost-structured offers for volume purchasers with tiered pricing and contract pricing for multi-year procurement; total-cost-of-ownership modeling available to demonstrate savings vs alternatives.

• Sustainability: Material sourcing traceability, optional low‑VOC coatings, and waste-reduction manufacturing practices; supplier can provide RoHS/REACH declarat