Leading stainless steel coil Suppliers in China

Daxun has been engaged in international business for more than ten years. In 2023, its export revenue exceeded US$100 million, and its export volume ranked among the top Chinese stainless steel manufacturers. Daxun continues to improve its service skills. In order to serve the global market, we have established three export service facilities in China and cooperated with engineering enterprises, steel mills and international trading companies. Daxun provides stainless steel chain services and has established long-term cooperative relationships with dozens of well-known steel mills around the world. Its inventory includes 50,000 tons of conventional stainless steel coils and 20,000 tons of duplex steel, nickel-based alloys, heat-resistant steel and other metals. Daxun’s stainless steel materials are of consistent quality. Types, specifications and delivery weights strictly comply with standards.

What is 316L stainless steel coil?

• 316L stainless steel coil is an austenitic stainless steel that has excellent corrosion resistance and strength. It shares mechanical qualities with 304L coil but is more resistant to pitting and crevice corrosion.
• It has a lower melting temperature than 304L coil, making it better suited to applications where the material is subjected to greater temperatures before being formed into a component, such as welding or brazing.
• 316L stainless steel coils can be made via rolling, drawing, or forging. It is utilized in a variety of applications, including marine, chemical, and food processing equipment.

What applications can 316L stainless steel coils be used in?

• 316L stainless steel coils are commonly utilized in construction, transportation, and other industries. It is a common type of stainless steel with excellent corrosion resistance to many hostile substances, particularly chloride ions.
• 316L stainless steel coils offer outstanding mechanical qualities and can withstand high temperatures. It is also ideal for welding, cutting, and bending.
• 316L stainless steel coils are widely used in a variety of sectors.
• Chemical production industries frequently employ 316L stainless steel tubes to convey corrosive chemicals. It has excellent corrosion resistance to acids, alkalis, and a variety of other chemical compounds.
• Construction industry: We frequently utilize 316L stainless steel pipes to convey water or sewage from one locati0n to another. The material is strong enough for long-term use.
• Food industry: We typically use 316L stainless steel pipes as boiling tubes because they can withstand high temperatures without deforming during the cooking process, whereas other materials are readily destroyed by heat.

Features of 316L Stainless Steel Coils

Corrosion Resistance
316L stainless steel coil has superior corrosion resistance than 304 stainless steel coil and is suitable for use in the pulp and paper industries. In addition, 316L stainless steel coil is resistant to saltwater erosion and the corrosive industrial climate.

Heat resistance
In intermittent applications below 1600 degrees, 316 stainless steel coil has excellent oxidation resistance.
316L stainless steel coil is more resistant to carbide precipitation than standard 316 grade stainless steel coils.

Corrosion Resistance

• 316 stainless steel is highly corrosion resistant in a variety of situations. It performs well in air circumstances, can withstand most settings, and is frequently employed in marine regions or areas with high industrial pollution. The best appearance is maintained when the design allows for even rain washing of the surface, or when dirt deposits are occasionally rinsed off the steel.
• Grade 316 has also provided great service in potable water. Pitting and crevice corrosion may occur in waters with higher chloride concentrations, with 2000 ppm recognized as the top limit. 316’s greater molybdenum concentration makes it substantially more corrosion resistant than 304.
• 316 stainless steel can be used with seawater as long as precautions are taken to prevent crevice corrosion from forming under sediments, precipitation, and biofouling, as well as in planned fissures.
• Grades 316 and 304 may experience stress corrosion cracking in chloride-containing solutions at temperatures over 60°C. Stress corrosion cracking should be considered for all corrosion services using corrosive liquids that may contain chlorine.

Toughness/Hardness

• Austenitic stainless steels are intrinsically robust, and 316 stainless steel is no exception, maintaining the ductile fracture mode and high absorbed energy in impact tests at cryogenic temperatures (-200°C).
• AS1210 specifies that grade 316 can be used in pressure vessels up to 800°C. The standard permits for higher design stresses in 316H at all temperatures.

High-temperature corrosion

• The commonly accepted maximum service temperatures for grade 316 (and grade 304) in air are 870°C for intermittent use and 925°C for continuous use.
• Cold Fabrication
  Grade 316 is generally workable using typical coil metal working processes, with the limitation that it cannot be oxygen cut. Plasma cutting is commonplace. Grade 316 has exceptional deep drawing capabilities because to its strong austenite stability.
• 316 is an easy austenitic stainless steel to forge at temperatures above 925°C.

Machinability

• Grade 316 is generally straightforward to process, but more difficult than carbon steel. More power is needed to machine grade 316. Cutting speed should be reduced, feed rate increased, and tools and equipment heavier. The machinability of 316 is roughly 60% that of AISI B1112 resulphurized free cutting carbon steel. There is a free-machining variant of 316 available as a bar.
• Heat treatment involves annealing the solution at 1065-1120°C, followed by quick cooling to prevent chromium carbide precipitation. 316 cannot be toughened through heat treatment. Stress relief is rarely required due to 316’s strong ductility.

Weldability

• Grade 316 stainless steel can be welded using most fusion procedures (GTAW / TIG, GMAW / MIG / MAG, MMAW / stick, SAW), with no need for preheat, postheat, or interpass temperature regulation. It is typically welded using filler metals of the same grade, 316 or 316L (or silicon-containing variants), which maintain corrosion resistance and strength. These grades are pre-qualified weld metals under AS1554.6:1994 for welding grade 316 to itself.

What are the commonly used surfaces of stainless steel coils?

The surface finish of 201 stainless steel coil might vary depending on the cold rolling processing methods used and the surface treatment used after rolling. Surface treatments for stainless steel coils include NO.1, 2B, 4, HL, 6, 8, BA, TR hard, heavy rolling bright 2H, polished bright, and other surface treatments:

• NO.1: The surface obtained after hot rolling, heat treatment and pickling of stainless steel strip. It is used to remove the black oxide scale formed by pickling or similar processes during hot rolling and heat treatment. It ranks first in surface treatment. The No. 1 surface is silvery white and matte. It is generally used in heat-resistant and corrosion-resistant industries that do not require high surface gloss, such as the alcohol industry, chemical industry, large containers, etc.
• 2B: Unlike the 2D surface, the 2B surface is smoothed by a light roller, and the surface is brighter. The surface roughness Ra value measured by the equipment ranges from 0.1 to 0.5μm, which is a typical value for most processing types. This stainless steel strip surface has the strongest adaptability and is suitable for industries such as chemical, papermaking, petroleum, medical, and a wide range of fields such as building curtain walls.
• TR hard surface: TR stainless steel is also called hard steel. Its characteristic steel grades include 304 and 301, which are used for items that require high strength and hardness, such as railway vehicles, conveyor belts, springs and washers. The idea is to use the work hardening characteristics of austenitic stainless steel to improve the strength and hardness of steel coils through cold working methods such as rolling. In order to replace the gentle flatness of the 2B base surface, the hard material is gently rolled by a few percent to tens of percent, and no annealing is performed after rolling. Therefore, the TR hard surface of the hard material is the rolled surface after the cold rolling process.
• Re-rolled bright 2H: After the rolling operation, the stainless steel strip will be bright annealed. A continuous annealing line can be used to quickly cool the strip. The stainless steel strip travels along the line at a speed of 60-80m/min. After this process, the surface finish will be 2H re-rolled bright.
• No. 4: The No. 4 surface has a good polishing effect and is brighter than No. 3. It can also be obtained by polishing the cold-rolled stainless steel coil with a 2D or 2B surface, and then polishing the processed surface with a sanding belt with a particle size of 150-180#. The tool measures the surface roughness (Ra) between 0.2 and 1.5μm. The No. 4 surface is widely used in restaurants and cooking equipment, medical equipment, architectural decoration, containers and other applications.
• HL: The HL surface is often called a hairline finish. The Japanese JIS standard specifies a continuous hairline abrasive surface obtained by polishing with a 150-240# abrasive belt. The restrictions under the Chinese GB3280 standard are unclear. HL surface finish is commonly used for architectural decoration, such as elevators, escalators, and exterior walls.
• No. 6: The No. 6 surface is further polished on the basis of No. 4 with a Tampico brush or a W63 grit abrasive material specified in the GB2477 standard. The surface has good metallic luster, softness, weak reflection, and no imaging. Due to its good performance, it is very suitable for curtain walls, tassel decoration, and cooking supplies.
• BA: BA is a surface that is brightly heat treated after cold rolling. Bright heat treatment is annealing in a protective atmosphere to ensure that the surface is not oxidized and retain the gloss of the cold-rolled surface, and then it is polished with a high-precision smooth roller to improve the surface brightness. The instrument evaluates the surface roughness to be 0.05-0.1μm, indicating that the surface is close to a mirror surface. BA surfaces can be used in a variety of applications, including food utensils, household appliances, medical equipment, automotive parts, and decorations.
• No. 8: Mirror surface, maximum reflectivity, no abrasive particles. The stainless steel deep processing industry also refers to 8K board. BA material is often used as raw material for mirror processing. It only needs to be polished. The surface is beautiful after mirror processing and is often used in building entrances and interior decoration.

What is the standard sea packaging  stainless steel coil?

• Standard export sea packaging:
  Waterproof Paper Winding+PVC Film+Strap Banding+Wooden Pallet or Wooden Case;
• Customized packaging as your request (Logo or other contents accepted to be printed on the packaging);
• Other special packaging will be designed as customer’s request;
  Eye to wall and eye to sky are both available;
• By International Express: DHL/UPS/FEDEX/EMS and our own express line;
• By air, sea or land;
• Shipping Port: Shanghai, Ningbo, Qingdao, Tianjin or as your request.

Why choose Daxun’s stainless steel coils？

Reliable Stainless Steel Coils and Sheets Inventory Guarantee

• Have you ever been in a situation where you required a significant quantity of stainless steel coils right away, only to discover that the supplier was running low on stock? This condition may impair your workflow and plans.
• Our Advantages: With us, this situation will be a thing of the past. Our inventory is always ample, guaranteeing that even the largest orders are fulfilled quickly and in accordance with your business schedule.

Custom Stainless Steel Material Processing

• You may have experienced a circumstance in which bespoke processing is required, but locating the correct supplier to match your exact requirements might be difficult.
• Our Advantages: We have great processing capabilities to satisfy any of your specific needs. Whether it is size, stainless steel surface treatment, or other unique requirements, we offer expert one-stop service.

Competitive Stainless Steel Prices

• When looking for a stainless steel coil provider, price is typically a major factor. You may have to make a compromise with your chosen supplier due to excessive costs.
• Our Advantages: We keep pricing low by implementing excellent cost control and improved sourcing methods. This implies that by choosing us, you will not only receive high-quality products but also outstanding value for money.

Various Specifications of Stainless Steel Coils in Stock

• Finding stainless steel coils with exact specifications might be a challenge. It is critical to select a supplier who understands and serves these specific needs.
• Our Advantages: Our portfolio demonstrates versatility, with a wide choice of materials, thicknesses, and widths. We take pleasure in our ability to satisfy your project’s exact specifications.

Precision Stainless Steel Shearing Service.

• Precision shearing is required for the usage of stainless steel coils, but not all vendors offer this precise service.
• Our Advantages: Our shearing service is both professional and efficient, delivering precise cuts that fit your exact demands.

Contact your stainless steel coil suppliers

• You can easily order stainless steel coils in any size and quantity online.
  Alternatively, our friendly sales team will be happy to take your order. Simply call +86 13382898899 or email Daxunhejin@gmail and we will get back to you as soon as possible.