Duplex S31803 Seamless Pipe

The ASTM A789 UNS S31803 tubing refers to seamless and welded tubing manufactured in accordance with ASTM A789/ASTM A1789M, which contains approximately 50% ferrite and 50% austenite. The stress corrosion resistance of ASTM A789 in neutral chloride solution and H2S is better than that of 304L, 316L austenitic stainless steel, and 18-5mo type duplex stainless steel. The UNS S31803 tubing is especially suitable for the temperature range of -50°F/+600°F. It may also be considered for applications beyond this temperature range, but there are some limitations, especially when applied to weld structures.

Product Pictures

Packaging and Delivery

FAQ:

Q: Are you trading company or manufacturer?

A: We are a professional steel pipes materials manufacturer.

Q: How long is your delivery time?

A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.

Q: Do you provide free sampleas?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us.

A Professional Steel Pipes Materials Inventor, Manufacturer And Solution Provider

TORICH INTERNATIONAL LIMITED is a professional inventor, manufacturer, and solution provider of steel pipe materials, integrating production and international trade, specializing in various precision steel pipes. Established in 1997, the factory covers 10,000 square meters, with an annual production capacity of 50,000 tons of steel pipes and a trading and warehousing capacity of 100,000 tons. It employs over 100 people and has more than 30 years of market experience, with products exported to 56 countries and regions.

In 2008, Torich International Limited was established specifically to handle international marketing, with products sold globally.

Main products

1. Seamless precision steel pipes

2. Welded precision steel pipes (including DOM pipes)

3. Precision machinery pipes, bearing pipes

4. Hydraulic cylinder steel pipes, hydraulic telescopic cylinder pipes, honed pipes

5. Stainless steel, alloy steel, niobium-based alloy steel pipes, etc.