In today’s domestic steel market, prices showed a slight slowdown in their decline, driven by the previous day's positive momentum. While some regions witnessed minor price increases for certain steel products, overall trading volumes remained weak. This indicates that the steel market is still struggling to recover from its downward trend. Just one trading day after a brief reprieve, the market faced renewed volatility today, testing the patience of steel traders.
According to data from the National Bureau of Statistics, China’s average daily crude steel production in April 2014 reached 2.2297 million tons, marking a 1.26% increase compared to March and hitting a record high. The growing imbalance between supply and demand has further deepened the sluggishness of the steel market. Additionally, the slowing growth in fixed asset and real estate investments signals weak downstream demand, making it increasingly challenging for steel producers to maintain profitability.
Despite these challenges, the market remains in a weak and fluctuating state. According to steel e-commerce market monitoring, construction steel prices continued to fall today, while hot-rolled coil prices saw a slight stabilization, and plate prices remained largely unchanged in the mainstream market.
**Today’s Steel Market Overview:**
- **Construction Steel:** On May 13, the average price of 12mm HRB400 rebar was 3,442 yuan, down 20 yuan from the previous day. The average price of 20mm rebar stood at 3,292 yuan, also slightly lower than Monday’s level. In the HPB300 wire market, the average price of 6.5mm wire was 3,415 yuan, down 5 yuan from Monday, while the 8.0mm high line averaged 3,403 yuan, a decrease of 5 yuan from yesterday.
- **Hot-Rolled Coils:** The average price of 3.0mm hot-rolled coils rose slightly to 3,497 yuan today, up 1 yuan from the previous day. However, the 4.75mm and 5.75mm grades saw declines of 2 yuan and 1 yuan, respectively, with the 5.75mm grade settling at 3,360 yuan, remaining unchanged from the prior day.
- **Medium Plates:** The average price of 8mm Puzhong plates increased by 1 yuan to 3,786 yuan, while 20mm Puzhong plates held firm at 3,500 yuan. The 20mm low alloy medium plates remained stable at 3,663 yuan.
**Steel Price Adjustments:**
- Fushun Steel in Dalian maintained its new threading price but reduced high line prices by 20 yuan. Guiyang implemented a 80-yuan cut on three-grade rebar and plate screws. Shanxi’s Jinshan rebar dropped by 30 yuan, and Pancheng Steel reduced wire rod prices in several cities by 50 yuan, while rebar prices remained unchanged and coiled screws were cut by 30 yuan.
- Pangang Steel lowered rebar execution prices in Chengdu, Kunming, and Panzhihua by 50 yuan. Shanxi Jianbang reduced coiled screw ex-factory prices by 40 yuan, and rebar prices fell by 30 yuan. Siping HRP 400 rebar in Changchun dropped by 10 yuan, while markets in Harbin, Shenyang, and Dalian remained stable.
- Tongzhou Fengnan District Zengzhou Steel Pipe Co., Ltd. reduced straight seam welded pipe prices by 20 yuan.
**Macro-Economic Outlook:**
Recent macroeconomic updates introduced the "State of the Nine Articles," which outlined four key requirements for the bond market: promoting development, strengthening credit constraints, enhancing interoperability, and improving supervision. These guidelines are expected to address long-standing issues in the Chinese bond market and support sustainable reform-driven growth.
From January to April 2014, real estate development investment totaled 2.2222 trillion yuan, reflecting a 16.4% year-on-year increase, though this was a 0.4 percentage point decline from the first quarter. Residential investment reached 1.5299 trillion yuan, up 16.6%, with a 0.2 percentage point drop in growth rate, accounting for 68.5% of total real estate investment.
In April 2014, industrial output above designated size grew by 8.7% year-on-year, slightly down from March’s 8.8%. The monthly growth rate was 0.82% compared to the previous month. From January to April, the cumulative growth in industrial output above designated size stood at 8.7% year-on-year.
Overview
Inductive Conductivity Sensor, also known as inductive conductivity probe, is a non-contact measuring instrument used to measure the conductivity in water. By leveraging electromagnetic induction principles, this device overcomes the constraints of conventional electrode-based sensors, making it optimally suited for demanding industrial environments such as metal finishing, chemical processing, and food and beverage production.
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Inductive Core Technology: How It Works
The Inductive sensor's innovation lies in its toroidal coil configuration, where a transmitter and receiver work in tandem to create a dynamic electromagnetic field. When AC current (typically 10-50 kHz) flows through the transmitter coil, it generates a primary magnetic field that penetrates the conductive medium. This interaction induces eddy currents in the medium, whose magnitude directly correlates to the material's conductivity (σ) according to Faraday's Law of Induction. The receiver coil detects phase shifts and amplitude changes in the secondary field, which are processed using Maxwell's equations to derive precise conductivity values in μS/cm.
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Conductivity in Water: Definition and Monitoring Imperatives
Conductivity, measured in microsiemens per centimeter (μS/cm), quantifies a solution's ability to conduct electrical current, directly proportional to its ionic concentration. In water systems, conductivity serves as a critical surrogate parameter for dissolved solids, with higher values indicating greater mineral content or contamination. Monitoring aquatic conductivity is vital across multiple domains:
Environmental Health: It acts as an early warning for pollution events, as industrial discharges or agricultural runoff elevate ionic loads. Regulatory bodies often mandate conductivity thresholds to safeguard ecosystems.
Traditional electrode-based sensors struggle in harsh aqueous environments due to fouling and corrosion, often yielding unreliable data. Inductive conductivity sensors, however, enable continuous, accurate monitoring without physical contact, ensuring compliance, process stability, and resource conservation. This non-contact approach is particularly critical in applications like seawater desalination, where conductivity fluctuations directly impact energy consumption and permeate quality. By providing real-time insights into water chemistry, inductive sensors empower informed decision-making, driving efficiency and sustainability across industries.
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Key advantages of inductive conductivity sensors
Contamination Resistance: No electrodes mean no fouling or corrosion
Long Lifespan: Maintenance-free operation reduces total cost of ownership
Wide Measurement Range: Effective in concentrated acids/bases and suspensions
Stable Performance: Immune to temperature/pressure fluctuations
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Why Choose Daruifuno's ASC200 Sensor?
Engineered for precision and durability, the ASC200 series offers:
Material Flexibility: PP (industrial) / PFA (FDA-compliant) options
High Accuracy: ±1% precision with automatic temperature compensation
Easy Integration: 0-2000mV output compatible with major control systems
IP68 Rating: Suitable for submerged or high-humidity installations
Cost-Effective: Superior performance at competitive pricing
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Inductive Conductivity Sensor,Inductive Conductivity Probe
Suzhou Delfino Environmental Technology Co., Ltd. , https://www.daruifuno.com