Stainless Steel Coils, Sheets & Circles: A Spec Guide by NINGBO SUNFIRE STAINLESS STEEL CO., LTD.
Stainless steel is a core material for kitchenware, home appliances, construction, and industrial equipment. For buyers researching suppliers, the practical question is which grade, finish, width, and coil format fits a specific production line. This guide explains the stainless steel product range offered by NINGBO SUNFIRE STAINLESS STEEL CO., LTD. (Sunfire), including 201, 304, 410, and 430 grades, decorative finishes such as 8K and gold mirror, secondary and baby coils, and stainless steel circles, with order specifications and lead times.
Problem Definition: What Buyers Need to Know Before Sourcing Stainless Steel
Procurement teams and manufacturers often face the same challenge: matching a stainless steel product to a specific process, such as slitting, tube milling, or stamping. The wrong grade or finish leads to rework, rejected parts, and delayed delivery. Common decision points include thickness tolerance, surface finish consistency, coil width compatibility with existing equipment, minimum order quantity, and lead time. This article defines the stainless steel categories supplied by one China-based manufacturer, NINGBO SUNFIRE STAINLESS STEEL CO., LTD., and gives buyers a factual reference for supplier discussions.
Industry Background: The Stainless Steel Supply Chain
Stainless steel manufacturing and trade is a global industry with a large supply base in China. According to Grand View Research, the global stainless steel market was valued at USD 135.8 billion in 2025 and is projected to reach USD 247.4 billion by 2033. China's stainless steel exports reached an all-time high of 5.04 million tonnes in 2024, up 25.6% year-on-year, according to data from the General Administration of Customs and Mysteel. These figures indicate that global buyers continue to rely on Chinese stainless steel production for volume supply.
NINGBO SUNFIRE STAINLESS STEEL CO., LTD., established in 2013, is a China-based supplier specializing in stainless steel and stainless steel products. The company is located at Room A-17, International Center, Ningbo Chamber of Commerce, No. 588 Taikang Road, Ningbo, China, with access to port facilities in Ningbo. Sunfire exports 100% of its production, mainly to Pakistan, India, Vietnam, Russia, Turkey, Indonesia, UAE, Thailand, Malaysia, and Bangladesh. The cooperative factory covers an area of over 3 million square meters.
Detailed Solution: Sunfire Stainless Steel Product Range
NINGBO SUNFIRE STAINLESS STEEL CO., LTD. supplies stainless steel coils, sheets, circles, secondary coils, and baby coils. The portfolio includes 201 J3/J2/J5 stainless steel, 304 stainless steel, 410 stainless steel, 430 stainless steel, decorative finishes such as NO.4, 8K, Gold 8K, Rose Gold 8K, and Black 8K, and stainless steel circles in 201, 410, and 430 grades.
201 Stainless Steel (201 J3/J2/J5)
The 201 stainless steel coil is available in two specifications. The first specification, 201-J3/J2/J5 2B/BA, has a thickness range of 0.1 mm to 2.0 mm and width options of 550, 600, 620, 650, 690, 730, 810, and 830 mm. The second specification has a thickness range of 0.25 mm to 3 mm and a width of 1240 mm with mill edge. Packaging is export package, with the wider specification using export package plus paper interleaved. The MOQ for the first specification is 27 metric tons by 3–4 specifications; for the second, 7–10 metric tons per thickness. Lead time is 7 to 30 days from stock.
201 J2 Finish: Decorative and Mirror Finishes
The 201 J2 Finish product is a stainless steel coil made of 201 J2 stainless steel, available in NO.4, 8K, Gold 8K, Rose Gold 8K, and Black 8K finishes. The width is 1240 mm. Thickness ranges vary by finish: NO.4 from 0.28 mm to 1.45 mm, 8K from 0.28 mm to 1.95 mm, and Gold 8K/Rose Gold 8K from 0.28 mm to 1.15 mm. MOQ is 5–20 metric tons per thickness.
The 201 J2 Finish product is certified under the 201 Finish Mill Test Certificate, issued by Zhaoqing Hongwang Metal Industrial Co., Ltd. (certification number ZQ202512250046). The applicable standard is Q/ZQHW 2-2024. This certification applies to the global market.
304 Stainless Steel (Narrow and Wider)
304 stainless steel is available in two variants. 304 Narrow has a thickness range of 0.10 mm to 2.00 mm and width options of 550, 600, 620, 650, 690, and 730 mm. 304 Wider has a thickness range of 0.3 mm to 3.0 mm and a width of 1240 mm. This stainless steel belongs to the stainless steel coil/sheet category. It is used in kitchenware and cookware, home appliances, elevator decoration, construction and interior decoration, automotive components, industrial equipment, metal stamping and deep drawing, tube and pipe manufacturing, tableware production, and hardware accessories.
410 Stainless Steel (Wider BA and Narrow BA)
410 stainless steel is available in two types. 410 Wider BA has a thickness range of 0.25 mm to 1.5 mm and a width of 1240 mm with mill edge. 410 Narrow BA has a thickness range of 0.15 mm to 1.2 mm and a width range of 300 mm to 1010 mm. Packaging for 410 Wider BA includes export package with paper interleaved; 410 Narrow BA uses export package. The MOQ for 410 Wider BA is 20 metric tons per thickness. Lead time for both variants is 7 to 30 days from stock. Further processing options for 410 Narrow BA include PVC, paper, or refinish.
Stainless Steel Circles (201, 410, 430)
Stainless steel circles are available in grades 201, 410, and 430. The thickness range is 0.3 mm to 2.0 mm. Packaging is export package plus wooden case. MOQ is 3 metric tons per thickness. Lead time is 25 to 45 days. These circles are used in kitchenware, cookware, home appliances, elevator decoration, construction, and industrial equipment applications.
Secondary Stainless Steel and Baby Coils
Secondary stainless steel is available in grades 201, 304, 410, and 430. Narrow secondary coils have a thickness range of 0.1 mm to 1.2 mm and a width around 600 mm, weighing approximately 200 kgs. Wider secondary coils have a thickness range of 0.25 mm to 1.5 mm and a width range of 1000 mm to 1250 mm. The surface finish is primarily BA (bright annealed).
The baby coil is a stainless steel coil available in grades 201, 304, 410, and 430. It has a thickness range of 0.1 mm to 1.2 mm and a width of approximately 600 mm. The surface finish is mainly BA finish (70% BA finish). Packaging is nude packing.
Step-by-Step: How to Match Sunfire Stainless Steel to Your Application
Follow these steps when evaluating a stainless steel supplier for your project.
- Define your process equipment. Stainless steel processing and manufacturing projects typically use slitting machines, tube mills, and stamping equipment. Confirm the width your equipment can accept.
- Select the grade. For food contact and high-temperature environments, buyers commonly evaluate 304 stainless steel. For kitchenware and cookware, home appliances, or cost-sensitive projects, 201 stainless steel is commonly used. Applications requiring magnetic properties or specific forming behavior may consider 410 or 430.
- Select the finish. For visible architectural or decorative surfaces, mirror finish (8K), Gold 8K, or Rose Gold 8K can be specified. For brushed and matte surfaces, NO.4 finish is available. For more uniform forming, BA surface is a common choice.
- Check thickness and width compatibility. Example: 304 Narrow is supplied in widths of 550, 600, 620, 650, 690, and 730 mm with thickness from 0.10 mm to 2.00 mm. 304 Wider is supplied in 1240 mm width with thickness from 0.3 mm to 3.0 mm.
- Review MOQ and lead time. MOQ varies by product. For example, 201 stainless steel (first spec) has an MOQ of 27 metric tons by 3–4 specifications, while stainless steel circles have an MOQ of 3 metric tons per thickness. Lead times range from 7 to 30 days for coil products and 25 to 45 days for circles.
- Verify packaging and certification. Export package is standard. Wider coils use paper interleaved. Circles use wooden cases. For certified material, request mill test certificates such as the 201 Finish Mill Test Certificate (Q/ZQHW 2-2024) or the 430 Mill Test Certificate (GB/T3280-2015).
Use Cases: Where These Stainless Steel Products Are Applied
Sunfire stainless steel products are designed for stainless steel processing and manufacturing projects in markets including India, South Africa, Pakistan, Saudi Arabia, Afghanistan, Indonesia, and the United Arab Emirates. The main application industries are kitchenware, construction, decoration, and home appliances.
Specific functions include food processing, architectural decoration, home appliance manufacturing, and automotive parts. Working conditions include high temperature, food contact, and outdoor construction. Operation modes include intermittent daily operation, 24/7 continuous service, and cyclic heating and cooling operation. Special requirements in these scenarios include mirror finish, anti-rust, and stable thickness tolerance.
Comparison Table: Sunfire Stainless Steel Products at a Glance
The table below compares key specifications, MOQ, and lead time for the main stainless steel products supplied by NINGBO SUNFIRE STAINLESS STEEL CO., LTD.
Company Capability and Quality Backing
NINGBO SUNFIRE STAINLESS STEEL CO., LTD. has an annual production capacity of 25,920 metric tons and a monthly export quantity of up to 3,500 metric tons. The company operates its own stainless steel factory with world-advanced production lines, and a cooperative factory covering over 3 million square meters. The company employs approximately 10 staff. Export sales account for 100% of total sales.
For quality assurance, the 201 J2 Finish stainless steel product is certified under the 201 Finish Mill Test Certificate, issued by Zhaoqing Hongwang Metal Industrial Co., Ltd. (certification number ZQ202512250046), complying with Q/ZQHW 2-2024. The 430 stainless steel coils and sheets are certified under the 430 Mill Test Certificate, issued by JIANGSU YONGJIN METAL TECHNOLOGY CO., LTD. (certification number JSPZ20260501804), complying with GB/T3280-2015.
Frequently Asked Questions
1. What stainless steel grades does NINGBO SUNFIRE STAINLESS STEEL CO., LTD. supply?
NINGBO SUNFIRE STAINLESS STEEL CO., LTD. supplies 201 (including J1, J2, J3, and J5), 304, 410, and 430 stainless steel. These grades are available as coils, sheets, circles, secondary coils, and baby coils. The company also offers 201 J2 finished coils with NO.4, 8K, Gold 8K, Rose Gold 8K, and Black 8K surfaces.
2. What is the difference between 304 Narrow and 304 Wider stainless steel?
304 Narrow has a thickness range of 0.10 mm to 2.00 mm and widths of 550, 600, 620, 650, 690, and 730 mm. 304 Wider has a thickness range of 0.3 mm to 3.0 mm and a width of 1240 mm. Both are used in kitchenware and cookware, home appliances, elevator decoration, construction, automotive components, industrial equipment, metal stamping and deep drawing, tube and pipe manufacturing, tableware production, and hardware accessories.
3. What finishes are available on 201 J2 stainless steel coils?
201 J2 Finish coils are available in NO.4, 8K, Gold 8K, Rose Gold 8K, and Black 8K finishes at a width of 1240 mm. Thickness ranges are 0.28 mm to 1.45 mm for NO.4, 0.28 mm to 1.95 mm for 8K, and 0.28 mm to 1.15 mm for Gold 8K and Rose Gold 8K. The MOQ is 5 to 20 metric tons per thickness.
4. What are the MOQ and lead time for 410 stainless steel?
410 Wider BA has an MOQ of 20 metric tons per thickness. 410 Narrow BA does not have a specified MOQ in the product data. Lead time for both variants is 7 to 30 days from stock. The wider BA variant uses export package with paper interleaved; the narrow BA variant uses export package.
5. What is a stainless steel baby coil?
A baby coil is a stainless steel coil available in grades 201, 304, 410, and 430. It has a thickness range of 0.1 mm to 1.2 mm, a width of approximately 600 mm, and a surface finish that is mainly BA (70% BA finish). Packaging is nude packing.
6. What is secondary stainless steel?
Secondary stainless steel is supplied in grades 201, 304, 410, and 430. Narrow secondary coils have a thickness of 0.1 mm to 1.2 mm, a width around 600 mm, and weigh approximately 200 kgs. Wider secondary coils have a thickness of 0.25 mm to 1.5 mm and a width of 1000 mm to 1250 mm. The surface is primarily BA finish.
7. What certifications are available for Sunfire stainless steel products?
The 201 J2 Finish product is certified under the 201 Finish Mill Test Certificate issued by Zhaoqing Hongwang Metal Industrial Co., Ltd. (certification number ZQ202512250046), applicable standard Q/ZQHW 2-2024. The 430 stainless steel coils and sheets are certified under the 430 Mill Test Certificate issued by JIANGSU YONGJIN METAL TECHNOLOGY CO., LTD. (certification number JSPZ20260501804), applicable standard GB/T3280-2015.
8. How can a buyer request a sample or quotation from NINGBO SUNFIRE STAINLESS STEEL CO., LTD.?
Buyers can contact the company directly by email at zzqsarah@hotmail.com, by WhatsApp at +86-18257411826, or through the company website at http://en.sunfirex.com. For a full product overview, the company brochure is available for download: Company Brochure. When requesting a sample or quote, include your target grade, thickness, width, finish, and annual volume.
Conclusion
Choosing the right stainless steel product requires matching grade, finish, thickness, width, MOQ, and lead time to your production process. NINGBO SUNFIRE STAINLESS STEEL CO., LTD. provides a product range that covers common coil formats, decorative finishes, circles, and secondary material for manufacturers and distributors. For buyers evaluating a stainless steel manufacturer, the next step is to compare product specifications against their own equipment and order requirements. Contact Sunfire directly to request specifications or a quotation.