Home > Products > Industrial Pipeline Series > ASTM AISI A312 Hot Cold Rolled 201 202 304 304L 316 904L 430 5083 3003 1020 Seamless/Welded Hairline Mirror Galvanized/Aluminum/Stainless Steel Tube
ASTM AISI A312 Hot Cold Rolled 201 202 304 304L 316 904L 430 5083 3003 1020 Seamless/Welded Hairline Mirror Galvanized/Aluminum/Stainless Steel Tube
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Product Details
Certification | ISO | Shape | Round | |
Technique | Cold Rolled | Model NO. | 201, 303Cu, 304, 304L, 316, 316L, 310S, | |
Production Process | welding/ polishing/inside bead removing | Specification | Customized |
Product Description
ASTM Specification | ASTM A240 / ASME SA240 |
Standard | MSRR, AMS, BS, ASTM A240 / ASME SA240 |
Length& Sizes Duplex 2507 board | 1000 mm x 2000 mm, 1000 mm x 2000 mm, 1220 mm x 2440 mm, 1250mm x 2500mm, 1500mm x 3000mm to 6000mm, 2000mm x 4000mm to 6000mm, 1500 mm x 3000 mm, 2000 mm x 2000 mm, 2000 mm x 4000 mm, 2m, 2.44m, 3m, 36″ X 120″ or 48″ X 144″, 4′ x 8′, Cut to size available |
Thickness | 0.1mm to 100 mm Thk |
Width | 10-2500mm |
Hardness Duplex 2507 board | Soft, Hard, Half Hard, Quarter Hard, Spring Hard etc. |
Temper | Annealed |
Condition | Polished on both sides |
Finish Duplex 2507 board | Hot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
Stock in form of Duplex 2507 board | Plate, Sheet, Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Strip, Flats, Clad Plate, Rolling Sheet, Flat Sheet, Rolling Plate, Flat Shim, Blank (Circle), hot rolled, cold rolled, annealed, soft annealed, descaled, sheared, tread plate, Checker Plate |
Value Added Service | Cladding, Heat Treatment, Annealed, Pickling, Polish, Rolling, Cutting, Bending, Forging, Minor Fabrication Etc. |
Dealers & Distributor of | ATI, POSCO, JISCO, TISCO, LISCO, BAOSTEELESSAR, JINDAL, BHUSHAN, IMPORTED material |
Test Report Duplex 2507 board | Raw Materials Certificate |
EN 10204/3.1B | |
100% Radiography Test Report | |
High special strength, high melt point | |
Third Party Inspection Report, etc | |
Excellent corrosive resistance, good thermal resistance | |
Customer support after-sales service | |
Strict Control from Raw Material to Finished | |
Profiling Duplex 2507 board | To provide a full profiling service we use numerous profiling methods including: |
Plasma Plate Cutting | |
Laser Plate Cutting | |
Oxy-propane Flame Cutting | |
Specialized in Duplex 2507 board | material under 3/16 " [5.00 mm] in thickness and 24″ [600 mm] and over in width |
material 3/16″ [5.00 mm] and over in thickness and over 10″ [250 mm] in width | |
cold-rolled material under 3/16″ [5.00 mm] in thickness and under 24″ [600 mm] in width | |
Free Quote, Inquiry answered within 24 hours | |
We offer a comprehensive services designed to add value to your project: plasma cutting, waterjet cutting, laser cutting, bending and mechanical processing, edge preparation, welding, sawing and shearing. |
The 2507 stainless steel plate is engineered for maximum resilience against pitting corrosion, boasting a PREN value of up to 43. Its superior corrosion resistance extends to stress corrosion cracking (SCC), crevice corrosion, and general corrosion. These combined properties make the duplex 2507 an incredibly versatile and reliable choice for demanding environments.
With a yield strength that is twice that of the 300 series stainless steel, 2507 stainless steel allows for the use of thinner sections under similar load conditions, effectively reducing material costs.
Boasting yield and tensile strengths double that of traditional stainless steel, 2507 significantly enhances wear resistance.
Desalination processes.
Equipment for the oil and gas industry, including offshore platforms, pipelines, and well casings.
Chemical processing equipment, ideal for handling corrosive substances.
Pulp and paper industry applications, especially bleaching process equipment.
Petrochemical industry applications, including PVC strippers.
Water desalination facilities.
Power industry systems, such as flue gas desulfurization (FGD) units.
Marine components, such as ship propellers and shafts.
Pollution control equipment like scrubbers.
Fittings are vital for connecting and directing fluid flow in pipelines and systems, including elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples.
Surface Description of Stainless Steel Plate
Finish Designation | Method and degree of finish |
No.1 | After hot rolling, heat treatment, pickling or other equivalent treatment is applied. |
No.2D | Annealing and pickling are performed after cold rolling; material is soft with surface of silver-white luster; used for general applications and deep drawing. |
No.2B | After 2D finish, skin pass rolling is performed to obtain a more suitable luster; the surface becomes very exquisite; used for general applications. |
No.3 | Intermediate 100-120 grit finish; used for applications in which surface polishing is performed after shaping. |
No.4 | General 150-180 grit finish; used for restaurants and kitchen equipment and tools. |
#240 | 240 grit finish; used when a finer finish than No. 4 is required; typically for restaurants and kitchen equipment and tools. |
#320 | 320 grit finish polished product. |
HL | This finish is performed by continuous linear polishing using an abrasive of appropriate grain size; mainly used for architectural applications. |
BA | Achieved by performing bright annealing after cold rolling and then skin pass rolling to obtain even greater reflectance; provides excellent corrosion resistance; used for household appliances, kitchen equipment, and automobiles. |
8K | Through multiple grinding, it achieves very high brightness and smoothness, like a mirror. |
Zhongzheng International embarked on its illustrious stainless steel journey in 2003. With over two decades of dynamic growth and groundbreaking innovation, it has risen to the pinnacle of the industry, firmly establishing its esteemed reputation in stainless steel materials and advanced processing.
With an illustrious history in international business, Zhongzheng's 2023 export revenue surged past US$100 million. By strategically establishing three export service bases in China, the company has forged robust alliances with engineering firms, steel mills, and global trading entities. This extensive collaborative network continually enhances service capabilities and ambitiously expands Zhongzheng's footprint in overseas markets.
Comprehensive Stainless Steel Plate ServiceZhongzheng International redefines stainless steel services with its innovative 'supermarket' model, partnering globally with renowned steel mills. With an impressive inventory of 160,000 tons-comprising 20,000 tons of diverse metals, including ordinary stainless steel plates, duplex steel plates, nickel-based alloy plates, and heat-resistant steel plates-Zhongzheng ensures reliability, unparalleled quality, and strict adherence to specifications and delivery standards.
Advanced Processing CapabilitiesEquipped with cutting-edge steel processing equipment and professional testing centers, Zhongzheng excels in cutting, grinding, forming, beveling, welding, heat treatment, machining, spraying, and beyond. Serving over 30 diverse industries-including automotive, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/biofermentation, petrochemicals, and energy equipment-Zhongzheng's expertise is unrivaled.
Diverse and Reliable ServicesZhongzheng's extensive service experience is reflected in its wide range of offerings. With a client base exceeding 70,000 across 30 industries and 30,000+ active customers, Daxun's industry recognition and service excellence are well-established.
Efficient and High-QualityZhongzheng guarantees prompt and efficient delivery of stainless steel products through an integrated system that merges information flow, logistics, and capital flow. Real-time order data seamlessly links to the logistics system, ensuring swift delivery. Strategically positioned processing centers near highways, rivers, and oceans facilitate efficient scheduling, rapid response, and smooth transportation.
Quality CommitmentDedicated to quality and integrity, Zhongzheng introduces 'Performance Excellence Management' and adopts 'PDCA+Lean' management principles, ensuring 'Zhongzheng = assured quality' becomes synonymous with trust. The implementation of a sophisticated ERP system allows full traceability of each steel plate, reinforcing the industry's anti-counterfeiting efforts.
Save Costs for CustomersZhongzheng prioritizes time, material, and stress savings for customers, ultimately reducing costs. By offering cost-optimized material recommendations and streamlined processing services, Zhongzheng enhances material utilization. Continuous lean improvement activities enable Daxun to minimize its own costs and pass on savings to customers. Additionally, a comprehensive product traceability system and prompt resolution of quality concerns provide customers with unparalleled peace of mind.
Name | 2507/S32750 |
UNS | S32750; S39275 |
En No. | 1.441 |
C (max.) | 0.03 |
Mn | 1.2 |
Si | 0.8 |
Cr | 24.0-26.0 |
Ni | 6.0-8.0 |
Mo | 3.0-5.0 |
N | 0.24-0.32 |
Cu | 0.5 |
Other | S 0.020 max; P 0.035 max |
PREN | 40-43 |
Grade | Property | Value |
2507/ S32750 | Density (g/cm3) | 7.8 |
0.2% Offset Yield Strength | 80 ksi | |
Ultimate Tensile Strength | 116 ksi | |
0.1% Offset Yield Strength 0.2% | 91 ksi | |
Elongation in 2 inches, % | 15% | |
Hardness Rockwell C | 32 | |
Impact Energy | 74 ft.-lbs | |
Density | 0.28 lb per inch3 | |
Modulus of elasticity | 28 x 10(6) psi | |
Coefficient of thermal expansion | 7.2 x 10(-6) per of at 68 to 212 of | |
Thermal conductivity | 8.7 Btu/hr ftoF | |
Heat capacity | 0.12 Btu/ lb oF | |
Electrical resistivity | 31.5 x10(-6) ohm-inch |
Grade | Type | Thickness | Surface |
Austenitic | 304/304H/304L/304J1 | 0.25-150mm | 2B/BA/NO.4/8K/SB/HL/NO.1 |
321 | 0.4-80mm | 2B/BA/NO.4/8K/SB/HL/NO.1 | |
316/316L/317L/316Ti | 0.3-80mm | 2B/BA/NO.4/8K/SB/HL/NO.1 | |
Ferrite | 430 | 0.4-3.0mm | 2B/BA/NO.4/8K/SB/HL |
Ultra Pure Ferrite | 443 | 0.4-2.0mm | 2B |
436L/439/444/441 | 0.5-3.0mm | 2B,2D | |
409L | 0.4-2.5mm | 2B,2D | |
Grade | Type | Thickness | Original |
Heat-resistant Steel | 309S | 0.5-40mm | CHN |
310S | 0.5-40mm | CHN | |
Duplex Steel | 2101 | 1.5-50mm | CHN |
2304 | 3.0-50mm | CHN | |
2205 | 0.5-60mm | CHN | |
2507 | 1.0-60mm | SWE / JPN / CHN | |
Super Austenitic Steel | N08904 | 0.6-50mm | SWE / JPN / CHN |
S31254 | 0.5-50mm | SWE / JPN / CHN | |
N08926 | 0.5-50mm | SWE / JPN / CHN | |
N08367 | 0.5-50mm | SWE / JPN / CHN | |
Nickel Base Alloy | N08031 | 1.0-50mm | US / JPN / GER |
N08810/N08800 | 0.8-50mm | US / JPN / CHN | |
N08028 | 1.0-20mm | US / GER / JPN | |
N08020 | 1.0-20mm | US / GER / JPN | |
N08825 | 0.8-40mm | US / GER / SWE / JPN / CHN | |
N10276 | 0.5-50mm | US / GER / JPN | |
N06022 | 1.0-50mm | US / GER / JPN | |
N06625 | 0.8-20mm | US / GER / CHN | |
N04400 | 1.0-20mm | US / GER / JPN | |
N06600 | 1.0-50mm | US / GER / JPN / CHN | |
N02201 | 0.5-20mm | US / JPN | |
Titanium | TA1/Gr1 | 0.5-50mm | JPN / CHN |
TA2/Gr2 | 0.5-50mm | JPN / CHN | |
Welding Material | ERNiCrMo-13 | 1.2,2.4mm | GER |
ERNiCrMo-3 | 2.4mm | GER | |
ERNiCrMo-4 | 2.4mm | US |
Surface Finish
We will guarantee the quality of your product. Including raw material inspection, supervision of production process, appearanceinspection and inspection for the finished products.We will provide our distinctive packingwhich improves the protection rate ofgoods. Besides, we accept customized packing.
We warmly welcome customers from all over the world, and looking forward to establishing a long term
mutual beneficialrelationship for a bright future together.
Our company has many years of foreign trade experience and exports to more than 140 countries. With our professional knowledge and comprehensive services, we have won the high quality evaluation of global customers.
1. We have high-quality products, which are directly supplied by the factory to ensure adequate supply.
2. We provide professional services to solve your problems online 24 hours a day.
3. With years of supply experience, we strive to bring value to every customer.
Company Profile

Zhongzheng Stainless Steel Co., Ltd. is a China-based manufacturer specializing in R&D, production, and distribution of stainless steel products. Established in the early 2000s, it serves industries including construction, machinery, food/medical equipment, and energy with precision tubes, sheets, profiles, and custom components.
Contact Us
- Zhongzheng Stainless Steel Co., Ltd.
- Contact nameLaijing Bu Chat Now
- AddressRoom 104-07, Building 5, Jinghu Technology Park Huanajinghu Garden, Donglihu Subdistrict Dongli District,
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