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Feature pages

  • 30/03/2026

    FEATURE|Green Steel Buyers’ Guide: CBAM 2026, Carbon Costs & Low-Carbon Certifications Explained

    This article primarily outlines the core framework and cost accounting logic of the CBAM 2026 policy, clarifies the essential differences between terms such as "green steel," "low-carbon emission steel," and "near-zero emission steel," and interprets the "hard currency" status of the EPD (Environmental Product Declaration) in international procurement. It aims to help international buyers see through the fog of "green labels" and make informed procurement decisions in the new era of green trade.

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  • 03/03/2026

    FEATURE| Complete Guide to Color Steel Tiles: Structure, Performance, and Comparison

    This article comprehensively covers the definition, classification (single-layer panels and sandwich composite panels), model specifications and characteristics of various panel types, performance advantages, and fire safety precautions for color steel tiles (profiled steel sheets). Through a multi-dimensional comparison with colored stone tiles, it elucidates the fundamental differences between the two materials in terms of composition, performance, and applications.

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  • 29/01/2026

    FEATURE| Complete List and Selection Reference of Industrial Pipe Fittings

    This article comprehensively explores the pivotal role of pipe fittings as the “joints” of piping systems. It provides a detailed explanation of their definition, common types and functions, performance characteristics of different materials, and selection criteria. Furthermore, it analyzes the current industry trends toward high-end, intelligent, and green development.

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  • 29/12/2025

    FEATURE| Steel Pipe Coating System Guide: Selection, Application to Delivery Practice

    This article comprehensively outlines the importance, technical classification, inspection and transportation essentials, engineering selection methodology, and future trends of steel pipe coatings, serving as a complete technical guide for engineering projects.

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  • 28/11/2025

    FEATURE| Corrugated Steel Culvert: The Solution for Cost Reduction and Efficiency Improvement in Infrastructure Engineering

    Using corrugated steel culverts instead of traditional concrete culverts for culvert construction offers unparalleled advantages in terms of construction time, cost, and environmental benefits. These trends collectively point to a safer, smarter, and more sustainable infrastructure future.

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  • 02/12/2024

    FEATURE| Main Shipping Routes for International Logistics Transportation

    The routes of maritime transport are distributed between the oceans, which is also the advantage of maritime transport over other modes of transport. When choosing a route, the conditions of the cargo, ships, and ports must be considered, and a comprehensive assessment of the system organization must be made before a reasonable choice can be made.

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  • 30/09/2024

    FEATURE|The Analysis of the Development Status of Steel Market in Shandong Province(China)

    ​Affected by the terminal market, domestic steel demand will continue to be sluggish, which will lead to inventory backlogs. Therefore, merchants generally begin to seek overseas orders. Domestic steel prices are in the global price trough, and the RMB exchange rate is still hovering at a low level, making China's steel exports more cost-effective.

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Page 2 of 4
Short News
15/10 17:25
< On October 15, the price of hot-rolled stainless steel plate in Wuxi fell slightly. 304/NO.1 TISCO 8.0*1500*6000 (slit edge) 2076.66, down 14.94. (USD/ton)
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15/10 17:24
< On October 15, the price of bearing steel round bars in Liaocheng did not fluctuate significantly. GCr15 (AISI 52100) Jiyuan Φ76-130 (hot rolled) 624.49, down 1.49. (USD/ton)
15/10 17:23
< On October 15, the price of 300 series hot-rolled stainless steel coil fell in Wuxi. 310S/NO.1 TISCO 3.0*1520*C (mill edge) 5079.60, down 59.76. (USD/ton)
15/10 17:22
< On October 15, the price of 300 series hot-rolled stainless steel coil in Wuxi fell slightly. 316L/NO.1 TISCO 10.0*1520*C (mill edge) 4242.96, down 44.82. (USD/ton)
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15/10 17:18
< On October 15, the price of cold heading steel in Jiaxing remained stable. 35K (SWRCH35K) Shagang Φ26-28 (hot rolling) 513.94. (USD/ton)
15/10 17:18
< On October 15, the price of gear materials steel round bar in Shanghai dropped slightly. 20CrMnTi Hanggang Φ20-28 (hot rolling) 611.05, down 11.95. (USD/ton)
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Answers

  • Causes of Common Production Problems in Q235 Spiral Pipes

    Common Defects and Causes of Spiral Steel Pipes: Loosening, bubbles, shrinkage cavities, residues, non-metallic inclusions, segregation, white spots, cracks, and various abnormal fracture defects in spiral steel pipes.

    Causes of Segregation in Q235 Spiral Pipes: During casting and solidification, selective crystallization and diffusion can cause the aggregation of certain elements, leading to uneven chemical composition. Depending on the distribution location, this can be classified as ingot segregation, center segregation, and point segregation.

    Causes of porosity in Q235 spiral tubes: During hot working, gaps are created by the solidification shrinkage of low-melting-point materials and the release of gas, preventing the steel from being welded. Based on their basic distribution, porosity can be divided into two types: centrally located type and generally loose type.


  • Can galvanized pipes be painted?

    You can paint them, but not directly.

    Since galvanized pipes have a smooth surface and a highly reactive zinc coating, they must first be cleaned and sanded, then coated with a specialized primer (such as epoxy zinc yellow primer or zinc phosphate primer), followed by a compatible topcoat (such as epoxy paint, polyurethane paint, or water-based acrylic paint). At the same time, avoid using ordinary latex paint, paints containing copper pigments, and alkyd paints, as these can cause peeling, flaking, or accelerated corrosion.


  • What are the common coating processes for anti-corrosive spiral steel pipes?

    The coating scheme for anti-corrosive spiral steel pipes is determined by the operating environment.

    The three-layer polyethylene (3PE) coating system combines epoxy powder, an adhesive layer, and a polyethylene layer to form a structurally stable protective barrier.

    Epoxy coal tar coating involves the alternating application of epoxy coal tar paint and glass fiber cloth, creating a water- and corrosion-resistant coating system. Internal cement mortar lining forms a smooth inner surface on the pipe wall, helping to reduce flow resistance.

    Epoxy powder coating utilizes high-density polyethylene as a base material, balancing mechanical strength with corrosion resistance. Each process has its own specific advantages; the appropriate method should be selected based on the conveyed medium and installation conditions.


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