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NACE MR0175 と NACE MR0103 の違いは何ですか?

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Introduction In industries like oil and gas, where equipment and infrastructure are routinely exposed to harsh environments, selecting materials that can withstand corrosive conditions is crucial. Two essential standards that guide material selection for environments containing hydrogen sulfide (H₂S) are NACE MR0175 and NACE MR0103. While both standards aim to prevent sulfide stress cracking (SSC) and other hydrogen-induced damage, they are designed for different applications and environments. This blog provides a comprehensive overview of the differences between these two essential standards. Introduction to NACE Standards NACE International, now part of the Association for Materials Protection and Performance (AMPP), developed NACE MR0175 and NACE MR0103 to address the challenges posed by […]

環境クラッキング: HB、HIC、SWC、SOHIC、SSC、SZC、HSC、HE、SCC

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Introduction In industries where materials are subjected to harsh environments—such as oil and gas, chemical processing, and power generation—understanding and preventing environmental cracking is critical. These types of cracking can lead to catastrophic failures, costly repairs, and significant safety risks. This blog post will provide a detailed and professional overview of the various forms of environmental cracking like HB, HIC, SWC, SOHIC, SSC, SZC, HSC, HE, and SCC, including their recognition, underlying mechanisms, and strategies for prevention. 1. Hydrogen Blistering (HB) Recognition: Hydrogen blistering is characterized by the formation of blisters or bulges on the surface of a material. These blisters result from hydrogen atoms penetrating the material and accumulating […]

石油貯蔵タンクの鋼板枚数の計算方法

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Introduction Building oil storage tanks involves precise planning and accurate calculations to ensure structural integrity, safety, and cost-effectiveness. For tanks constructed using carbon steel plates, determining the quantity and arrangement of these plates is crucial. In this blog, we will explore calculating the number of steel plates for oil storage tanks, using a specific example to illustrate the steps involved. Project Specifications Customer Requirements: Plate Thickness Options: 6mm, 8mm, and 10mm carbon steel plates Plate Dimensions: Width: 2200mm, Length: 6000mm Tank Specifications: Number of Tanks: 3 Individual Tank Volume: 3,000 cubic meters Height: 12 meters Diameter: 15.286 meters Steps to Calculate Steel Plate Quantities for Three Cylindrical Oil Storage Tanks […]

3LPE vs 3LPP: パイプラインコーティングの総合比較

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Introduction Pipeline coatings protect steel pipelines from corrosion and other environmental factors. Among the most commonly used coatings are 3-layer Polyethylene (3LPE) and 3-layer Polypropylene (3LPP) coatings. Both coatings offer robust protection, but they differ in terms of application, composition, and performance. This blog will provide a detailed comparison between 3LPE and 3LPP coatings, focusing on five key areas: coating selection, coating composition, coating performance, construction requirements, and construction process. 1. Coating Selection 3LPE Coating: Usage: 3LPE is widely used for onshore and offshore pipelines in the oil and gas industry. It is particularly suitable for environments where moderate temperature resistance and excellent mechanical protection are required. Temperature Range: The […]

石油・ガス探査における鋼管の重要な役割を探る

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Introduction Steel pipes are critical in the oil and gas, offering unmatched durability and reliability under extreme conditions. Essential for exploration and transportation, these pipes withstand high pressures, corrosive environments, and harsh temperatures. This page explores the critical functions of steel pipes in oil and gas exploration, detailing their importance in drilling, infrastructure, and safety. Discover how selecting suitable steel pipes can enhance operational efficiency and reduce costs in this demanding industry. I. The Basic Knowledge of the Steel Pipes for the Oil & Gas Industry 1. Terminology Explanation API: Abbreviation of American Petroleum Institute. OCTG: Abbreviation of Oil Country Tubular Goods, including Oil Casing Pipe, Oil Tubing, Drill Pipe, […]

H₂S/CO₂-油-水環境におけるSMSS 13CrおよびDSS 22Cr

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Introduction The corrosion behaviors of Super Martensitic Stainless Steel (SMSS) 13Cr and Duplex Stainless Steel (DSS) 22Cr in an H₂S/CO₂-oil-water environment are of significant interest, especially in the oil and gas industry, where these materials are often exposed to such harsh conditions. Here’s an overview of how each material behaves under these conditions: 1. Super Martensitic Stainless Steel (SMSS) 13Cr: Composition: SMSS 13Cr typically contains around 12-14% Chromium, with small amounts of Nickel and Molybdenum. The high Chromium content gives it good resistance to corrosion, while the martensitic structure provides high strength. Corrosion Behavior: CO₂ Corrosion: SMSS 13Cr shows moderate resistance to CO₂ corrosion, primarily due to forming a protective […]