The Monument of Longgang: Recognition as the Sixth Batch of National “Little Giant” Enterprises
Recently, the Shandong Provincial Department of Industry and Information Technology announced on the official website the sixth batch of “little giant”enterprise —entitled as newly emerged, specialized and innovative. With the completion of the publicity period, Yantai Longgang Pump Industry Co., Ltd. was identified as the sixth batch of national “little giant” enterprises. Longgang Pump industry is the leader in domestic […]
The Showcase of Technical Strength and Innovation: Our Honor in TatOilExpo-2024
In late August, the refreshing breeze of golden autumn heralds TatOilExpo-2024 taking place from August 26-28, 2024. The chairman leads the Longgang delegation, showcasing our latest technological achievements and innovative solutions at the Expo. He engaged in meaningful discussions with industry leaders, partners, and potential clients worldwide. Mr. Oleg, Minister of Industry and Trade of the Republic of Tatarstan, visited the booth […]
How to Select a CO2 Booster Pump for CCUS Projects: Structure, Seals, and Materials
Learn how to select a CO2 booster pump for CCUS projects by reviewing dense-phase CO2 behavior, pressure stability, pump structure, seals, and materials.
How to Choose a Maleic Anhydride Plant Pump: Structure, Mechanical Seals, and Materials
Learn how to choose a maleic anhydride plant pump by matching process duty, pump structure, seal arrangement, and material selection for hot and corrosive services.
How to Choose a High-Temperature Hot Oil Transfer Pump for Refining Projects
A high-temperature hot oil transfer pump must control heat, pressure, shaft movement, seal environment, and maintenance access at the same time. In refining and chemical integration projects, hot oil circulation can expose a centrifugal pump to thermal expansion, volatile hydrocarbons, heavy casing loads, and long continuous operation. The right selection starts with the duty point, […]
Corrosion-Resistant Centrifugal Pumps for Green Coal Chemical Projects: Structure, Seals, and Materials
A corrosion-resistant centrifugal pump for green coal chemical projects must be chosen based on chemistry first. Coal gasification, coal liquefaction, methanol, dimethyl ether, coal-to-olefins, scrubbing, desulfurization, and wastewater duties can involve acids, alkalis, salts, trace solids, high temperatures, and pressure variations. Structure, mechanical seals, and materials must be specified together so the pump can resist corrosion […]
Auswahl von Umwälzpumpen für Maleinsäureanhydrid-Anlagen: Aufbau, Dichtungen und Werkstoffe
A molten salt circulation pump for a maleic anhydride unit should be selected from the salt temperature, flow, head, viscosity, density, heat-transfer arrangement, sealing method, and material compatibility. In the project data available for this duty, the heat transfer salt operates at approximately 260 to 300°C, with a design flow of about 8 to 12 […]
Auswahl von Ethylen-Speisepumpen: Aufbau, Gleitringdichtungen und Werkstoffe für den Einsatz bei niedrigen Temperaturen
An ethylene feed pump should be selected around vaporization risk, low temperature, suction performance, sealing, and material compatibility, not flow and head alone. For ethylene service, a vertical suspended bag pump can be a strong fit because its double-casing construction, low-temperature capability, and suction-focused first-stage design address the conditions that make light hydrocarbons difficult to […]
Wie man eine Kreiselpumpe für den Einsatz in korrosiven Chemikalien spezifiziert
A centrifugal pump for corrosive chemical service must be specified based on the fluid, temperature, pressure, flow, materials, sealing arrangement, and operating environment. Selecting by flow and head alone can create problems with corrosion, cavitation, mechanical seal life, or maintenance access. Longgang Pump produces BB, OH, and VS chemical centrifugal pumps for petrochemical, coal chemical, environmental-protection, and water-treatment […]
Auswahl von mehrstufigen Hochdruckpumpen für anspruchsvolle Anwendungen
A high pressure multistage pump should be selected from the required head, flow range, fluid condition, temperature, pressure class, and maintenance strategy. The main structural decision is often whether a segmented BB4 arrangement or a double-shell BB5 arrangement better suits the duty. Material compatibility, axial-force balance, bearing protection, and seal support then determine whether the […]
Kavitationsvermeidung bei Kreiselpumpen durch NPSH- und Laufraddesign für raue Industriebedingungen
Centrifugal pump cavitation prevention starts before commissioning. The reliable approach is to assess the actual NPSH margin, liquid vapor pressure, inlet geometry, rotor support, mechanical seal arrangement, and wetted materials as one selection problem. That matters in petrochemical, coal chemical, and low-temperature services because a pump can meet its flow and head duty while still […]
Auswahl von Kreiselpumpen gemäß API 610 für petrochemische Kohle-, Chemie- und Wasseraufbereitungssysteme
API 610 centrifugal pump selection should begin with the project duty, not a preferred model. The appropriate structure, mechanical seal system, and wetted materials change with the liquid, temperature, pressure, vapor pressure, solids content, layout, and maintenance requirements. Longgang Pump‘s BB, OH, and VS families provide different engineering answers for refinery, coal-chemical, water-treatment, utility, and […]