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High-Strength Bolts for Steel Structures: A Complete Guide (Advanced Engineering Edition)
In modern steel structure engineering, high-strength bolts represent far more than a simple fastening component—they are the core transmission elements that guarantee joint rigidity, seismic resilience, and long-term structural integrity. In critical steel connections, the performance of the bolts often determines the safety margin of the entire structure. This in-depth guide explains not only what high-strength bolts are, but also why they matter, how t...Read more -
Tianjin Longshi Fasteners × China Energy Group
From Component Supplier to Engineering-Grade Fastening Solution Partner Over a Decade of Cooperation1. From “Qualified Supplier” to “Engineering Partner”Before 2012, key fastening components for China’s heavy-haul railway and energy infrastructure relied heavily on imported products. Domestic high-strength fasteners struggled to satisfy requirements for fatigue life, anti-loosening performance, and extreme temperature/pressure environments.Read more -
How Longshi Provides Reliable Fastener Solutions for Low-Temperature Projects
Low-temperature environments increase the risk of brittle fracture in fasteners used for pipelines, petrochemical plants, LNG facilities, and high-altitude structures. This article introduces Longshi’s professional fastener solutions designed to ensure bolt safety from –20°C to –60°C.1. The Challenge of Low-Temperature Bolt FailureWhen steel operates below its ductile–brittle transition temperature, it loses toughness rapidly. For pipelines, c...Read more -
China–Russia Energy Pact Boosts Global Fastener Export Momentum in 2025
The newly signed China–Russia natural gas transport agreement reshapes infrastructure investment and opens new opportunities for Chinese fastener exporters.A New Chapter for Energy and Infrastructure CollaborationIn early September 2025, China and Russia finalized a landmark agreement to advance the Power of Siberia 2 pipeline, a major energy corridor that will deliver up to 50 billion cubic meters of natural gas annually to C...Read more -
TIANJIN LONGSHI FASTENERS Company History and Development
Company OverviewTIANJIN LONGSHI FASTENERS was established in 2008 and is headquartered in Hebei Province, China. The company focuses on the production of high-quality fasteners, including bolts, nuts, washers, screws, and anchors. From its early days, LONGSHI FASTENERS quickly gained recognition in the domestic market due to its excellent product quality and customer service. As the demand for high-quality fasteners increased globally, LONGSHI expanded its reach and...Read more