Leading stainless steel tube and pipe Suppliers in China

GENERAL PROPERTIES

• 321 Stainless Steel Pipe (UNS S32100) is a titanium stabilized austenitic stainless steel with good overall corrosion resistance. It has high resistance to intergranular corrosion after exposure to the chromium carbide precipitation temperature range of 800 – 1500°F (427 – 816°C). The alloy will resist oxidation to 1500°F (816°C) and has better creep and stress rupture properties than 304 and 304L steel pipe. It also has good low temperature toughness.
• Stainless Steel Tube 321H (UNS S 32109) is a higher carbon content version of this alloy (0.04 – 0.10). It is designed for increased creep resistance and strength at temperatures above 1000oF (537°C). In most cases, the carbon content of the 321 Stainless Steel pipe allows for dual certification.
• Alloy 321 can only be toughened through cold working, not by heat treatment. It can be easily welded and processed using normal shop fabrication techniques.

COMMON APPLICATIONS

• Aerospace – piston engine manifolds
• Chemical Processing
• Expansion Joints
• Food Processing – equipment and storage
• Petroleum Refining – polythionic acid service
• Waste Treatment – thermal oxidizers

ASTM/ASTE: UNS S32100

CORROSION RESISTANCE

• exhibits good general corrosion resistance that is comparable to 304.
• developed for use in the chromium carbide precipitation range of 1800 – 1500°F (427 – 816°C) .
• can be used in most diluted organic acids at moderate temperatures .
• can be used in pure phosphoric acid at lower temperatures.
• can be used in up to 10% diluted solutions at elevated temperatures.
• resists polythionic acid stress corrosion cracking in hydrocarbon service.
•  utilized in chloride or fluoride free caustic solutions at moderate temperatures.
•  does not perform well in chloride solutions, even in small concentrations, or in sulfuric acid service.

PROCESSING

Alloy 321/H can be easily welded and processed by standard shop fabrication practices.

HOT FORMING

• Working temperatures of 2100 – 2300°F (1149 – 1260°C) are recommended for forging, upsetting and other hot working processes.
• Alloy not suitable for work at temperatures below 1700°F (927°C).
• Material must be water quenched or fully annealed after working to re-attain maximum corrosion resistance.

COLD FORMING

• Quite ductile and forms easily.

WELDING

• Readily welded by most standard processes.
• Post weld heat treatment is not necessary

MACHINING

• Hardening rate of 321 makes it less machinable than 410 stainless steel, but similar to 304

Why choose Stainless Steel Pipe 321, 321H, UNS S32100, UNS S32109, WNR 1.4541, WNR 1.4878 stainless steel pipes and tubes manufactured by Daxun?

• Short Lead Time – We have the best speed in providing high quality 321/321H Stainless Steel Pipes and Tubes services to our clients.
• Customized Sizes: We can process Stainless Steel 321/321H Tubes to produce and supply standard or non-standard stainless steel pipes.
• Best Prices: Our 321/321H Stainless Steel Pipes are priced very competitively.
  Quality Products: We ensure the quality of SS 321/321H Pipes and Tubes at all costs.
  Full Certifications: Our products come with full certification Mill TC, Test Reports and Hydrostatic Tests from NABL approved labs.
• Fittings and Flanges: We are the manufacturer of 321 Forged Fittings, 321 Butt Weld Fittings, 321 Compression Ferrule Fittings and 321/321H Flanges, providing our clients with the convenience of buying all their needs from one vendor.

Features it possesses

• Since SS321/SS321H stainless steel welded pipe is made of pure stainless steel alloy, it has many excellent properties. Such as durability, flexibility, toughness, high durability, long service life, high tensile strength, high dimensional accuracy, good surface finish, etc. In addition, it also has stronger resistance to pitting, corrosion, oxidation, stress corrosion cracking and crevice corrosion.

Testing

• Positive material identification test, intergranular corrosion test, pitting resistant test, mechanical test, chemical test, macro/micro test, flattening/flaring test are tests conducted.

Documents provided-

• Heart treatment chart, quality assurance plan, commercial invoice, certificate of origin, raw material test report, material traceability report etc are a few essential documents provided to the buyers. Additionally, the other documents like MTC as per EN 10204/3.1B, TC like radiography test report and the third party test report are provided.

Find the stainless steel tube you need right here

• We have a large inventory of high quality standard and specialty grade seamless and welded stainless steel pipes. Our 300 Series stainless steel pipes offer increased strength and corrosion resistance for use in high pressure and harsh conditions, making them perfect for your project. ASTM standard requirements include A213 seamless stainless steel pipe, A269 welded stainless steel pipe, A511 seamless mechanical stainless steel pipe, and A554 decorative stainless steel pipe, with fabrication options including annealed, pickled, or bright annealed.
• Stainless steel tubes are offered in welded and seamless configurations, with annealed, pickled, and bright annealed manufacturing choices.
• We carry and specialise in small and large outer diameter stainless steel tubes of various thicknesses and grades, all of which are in stock and available to be custom cut, polished, and supplied to you promptly. Our services for cutting and polishing stainless steel tubes can be tailored to your individual needs.
• Daxun Alloys is the China leading supplier of stainless steel tubes. Our high quality products, fast delivery and free unlimited cutting make us the preferred stainless steel tube supplier for many domestic and international customers. Order online or by phone and receive stainless steel tubes cut to your specifications within 5-7 days.

321-321h grade stainless steel pipe

Wide choice of dimensions and free cutting

• Whatever your needs, Daxun Alloys has the perfect stainless steel tube for you. We offer 3m and 6m lengths, with diameters from 3mm to 2000mm (Grade 321) and ¾” to 20″ (Grade 321H).
• If you require a specific length, we offer a free unlimited cutting service with every purchase. Using state-of-the-art bandsaws, our precision cutting service can cut the tube to the exact length you require. Just let us know when ordering. It’s another reason why we are a leading stainless steel tube supplier to our domestic and international customers.

Contact your stainless steel tube suppliers

• You can easily order stainless steel pipes online, in any size, in any quantity.
• 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.