Stainless steel coil

Stainless steel coils are coils made of stainless steel as raw material. They contain alloy elements such as chromium and nickel. A dense oxide film is formed on the surface, giving it excellent corrosion resistance and oxidation resistance. According to the material, they are divided into categories such as austenite and ferrite. They are formed by cold rolling or hot rolling and have different surface treatment effects. Widely used in fields such as architectural decoration, home appliance manufacturing, food and medicine, it is an important metal material with both practical and aesthetic value.

Category:  Stainless steel coil
Key word: Stainless steel coil

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اسم المنتج Stainless steel coil
Material Types Austenitic stainless steels (such as 304, 304L, 316, 316L), Ferritic stainless steels (such as 430), Martensitic stainless steels (such as 410), Duplex stainless steels (such as 2205)
Specifications – Thickness: 0.1mm – 12mm
– Width: 600mm – 2000mm
– Inner diameter: 508mm (conventional), 610mm
– Outer diameter: Determined by coil weight and thickness, usually ≤ 2500mm
Surface Treatments 2B surface (cold-rolled bright), BA surface (bright annealed), No.4 (satin finish), HL (hairline finish), mirror polish; Passivation treatment, oil coating for rust prevention
المعايير ASTM A240, ASTM A666, GB/T 3280, JIS G4305, DIN 17456, EN 10088-2
Mechanical Properties – Tensile strength: 520 – 1450 MPa (varies depending on the steel grade)
– Yield strength: 205 – 1035 MPa
– Elongation: ≥ 35% (for some steel grades)
Corrosion Resistance Chromium content ≥ 12%, forming a dense Cr₂O₃ oxide film on the surface, resistant to atmospheric, water, and weak acid-base corrosion; Steel grades containing molybdenum (such as 316L) have outstanding resistance to chloride ion corrosion
Typical Applications – Architectural decoration: Curtain wall panels, ceilings, elevator panels
– Home appliance manufacturing: Refrigerator panels, washing machine inner drums, air conditioner casings
– Food equipment: Storage tanks, conveyor belts
– Chemical industry: Reactor linings, pipes
– Automobile manufacturing: Exhaust systems, vehicle body structural parts
Processing Techniques Cold rolling (high precision, thin specifications), Hot rolling (thick specifications, low cost), Slitting (customized width), Cutting to length (cut into flat plates), Forming processing (stamping, bending)
التعبئة والتغليف Wrapped with moisture-proof paper + plastic film, and protected by steel corner protectors at the edges; Horizontal or vertical packaging, suitable for sea and land transportation
موعد التسليم Regular specifications: 5 – 10 working days; Customized specifications: 15 – 30 working days
Quality Certifications ISO 9001 Quality Management System Certification, SGS Inspection Report, RoHS Environmental Certification

Physical p

roperties and chemical properties:

الخصائص الفيزيائية

مظهر:

Usually has a metallic luster and a smooth surface. The appearance will vary depending on the different surface treatment processes, such as 2B surface, BA surface, frosted surface, mirror surface, etc.

كثافة:

It varies slightly due to the specific composition of stainless steel, generally between 7.93-8.03 g/cm3, for example, the density of 304 stainless steel is about 7.93 g/cm3, and the density of 316 stainless steel is about 7.98 g/cm3.
Melting point: The melting point of stainless steel coils is relatively high, generally around 1398-1454℃, and the melting points of different types of stainless steel will vary.

معامل التمدد الحراري:

In the range of room temperature to 100℃, the average linear expansion coefficient is about 16.0-18.5×10⁻⁶/℃, and the thermal expansion coefficient will increase slightly with the increase of temperature.

الموصلية الحرارية:

The thermal conductivity is relatively poor, and its thermal conductivity is between 16.3 and 21.5 W/(m·K), which is only about 1/3 of carbon steel.

الموصلية الكهربائية:

It has a certain electrical conductivity, but not as good as copper, aluminum and other metals. Its electrical conductivity is about 20% – 30% of copper.

الخصائص الكيميائية

مقاومة التآكل:

This is one of the most important chemical properties of stainless steel coils. Because it contains a high chromium (Cr) element, it is easy to form a dense chromium oxide film on the surface in the air. This oxide film can prevent the internal metal from further contacting with air, water and other corrosive media, thus having good corrosion resistance. When the chromium content reaches more than 12%, the corrosion resistance of stainless steel will be significantly improved. Some special stainless steel coils, such as 316 stainless steel, have better resistance to chloride ion corrosion due to the addition of molybdenum (Mo) elements, and are suitable for some more severe corrosive environments, such as marine environments.

مضادات الأكسدة:

At room temperature, stainless steel coils have good oxidation resistance. In high temperature environments, the oxide film on the surface of stainless steel can also play a certain protective role, preventing the metal from being further oxidized. However, as the temperature rises, the anti-oxidation performance will change, and different types of stainless steel have different anti-oxidation capabilities at high temperatures. For example, the oxide scale of 304 stainless steel below 870°C has good protection, but at higher temperatures, the oxidation rate will accelerate.

الاستقرار الكيميائي:

Stainless steel coils have good stability in general chemical media and are not easy to react chemically with acids, alkalis, salts, etc. However, under some specific conditions, such as high-concentration strong acid and strong alkali environments, or in the presence of specific catalysts, stainless steel may also corrode or other chemical reactions. For example, in concentrated sulfuric acid, stainless steel may be passivated, but if the sulfuric acid concentration and temperature exceed a certain range, it will also corrode stainless steel.

Magnetism:

Some stainless steel coils are magnetic, such as ferritic stainless steel and martensitic stainless steel, while austenitic stainless steel is usually non-magnetic or weakly magnetic. However, during cold processing, austenitic stainless steel may produce a certain degree of magnetism.

طلب:

Stainless steel coils are widely used in multiple fields due to their characteristics such as corrosion resistance, high strength, and beautiful surface. In the field of architectural decoration, they are used to make curtain walls, elevator cars, and metal ceilings, which not only enhance the texture of the building’s appearance but also resist wind and rain erosion. In home appliance manufacturing, stainless steel coils are commonly used in parts such as refrigerator panels, washing machine inner drums, and air conditioner casings, which not only meet hygiene requirements but also enhance durability. In the food and pharmaceutical industries, because they are clean, non-toxic, and easy to disinfect, they are used to make storage tanks, conveying equipment, and pharmaceutical pipelines. In the field of transportation, they are applied to automobile exhaust systems and subway car interiors to achieve a balance between lightweight and corrosion resistance. In addition, they are also used in the manufacturing of chemical equipment, such as reactor linings and conveying pipelines, which can withstand chemical media such as acids and alkalis and ensure production safety.

أبرز مميزات المنتج

قاسٍ

فائقة القوة والمتانة لمقاومة الأحمال والصدمات الشديدة

مرن

فائقة القوة والمتانة لمقاومة الأحمال والصدمات الشديدة

متين

مع المعالجة المضادة للتآكل، فهي مقاومة للطقس ومقاومة للتآكل، ويمكن أن تخدم لفترة طويلة.

بيئي

100% قابلة لإعادة التدوير والاستخدام ومنخفضة الكربون ومقللة للاستهلاك

فعال

تتم المعالجة بسرعة ودقة، ويتم تسليم المشروع بسرعة.

معيار

الحصول على شهادات دولية مثل ISO وASTM، مع جودة موثوقة.

تخصيص

إنشاء مواصفات وأشكال حصرية حسب الحاجة

خالي من الهموم

فريق خدمة عالمي يقدم الدعم الفني الكامل بعد البيع

التعليمات

يُصنّع مصنعنا مجموعةً شاملةً من منتجات الفولاذ، تشمل على سبيل المثال لا الحصر، العوارض الإنشائية، والقضبان، والصفائح، واللفائف الفولاذية. كما نُقدّم حلولاً مُصمّمة خصيصاً لتناسب أبعاداً وتركيبات مُحدّدة وفقاً لمتطلبات عملائنا.

بالتأكيد، جميع منتجاتنا الفولاذية تلتزم بالمعايير الدولية وتخضع لاختبارات ضمان جودة صارمة. نحمل شهادات متنوعة، منها شهادة ISO 9001، مما يؤكد التزامنا بالجودة. تأتي كل دفعة من المنتجات مع شهادة توضح درجتها ومعايير امتثالها.

نعم، نحن قادرون على إدارة كميات كبيرة من الطلبات حتى في ظل الجداول الزمنية المحدودة، بفضل عملياتنا التشغيلية المتطورة، وكوادرنا البشرية الكبيرة، وشبكتنا اللوجستية الفعّالة. ومع ذلك، ننصح دائمًا بالتواصل معنا للحصول على التفاصيل في أقرب وقت ممكن لتحقيق أفضل النتائج.

الاستدامة هي جوهر عملياتنا. نستخدم تقنيات موفرة للطاقة، ونعيد تدوير النفايات، ونلتزم ببروتوكولات بيئية صارمة لتقليل بصمتنا البيئية. يتجاوز التزامنا مجرد الامتثال، إذ نهدف إلى اتباع نهج مستدام يركز على المستقبل في كل ما نقوم به.

سلامة العمال أولوية قصوى. يلتزم مصنعنا بجميع لوائح الصحة والسلامة، ويوفر تدريبًا دوريًا، ويطبق بروتوكولات صارمة في الموقع، ويزود موظفينا بمعدات سلامة متطورة. نؤمن بأن العامل الآمن هو العامل المُمَكَّن.

بالتأكيد. نفخر بقدرتنا على تقديم حلول مُصممة خصيصًا. يتعاون فريق خبرائنا بشكل وثيق مع عملائنا لفهم احتياجاتهم، مقدمين تركيبات وقصات وتشطيبات مُخصصة تُلبي متطلبات مشاريعهم.

ندير العمليات اللوجستية من خلال شركاء موثوقين، لضمان توصيل آمن وفي الوقت المناسب. يتلقى عملاؤنا معلومات التتبع فور شحن طلباتهم، ويمكنهم متابعة شحناتهم فورًا. كما أن فريق خدمة العملاء لدينا جاهز دائمًا للمساعدة.

نلتزم بجودة منتجاتنا. في حالات نادرة، في حال وجود عيوب أو عدم امتثال، نتبع سياسة إرجاع أو استبدال شفافة. نشجع عملائنا على التواصل معنا خلال فترة محددة من تاريخ الاستلام، ونعدكم بحل سريع وعادل وفقًا لشروطنا وأحكامنا.