ERW ASTM Stainless Steel Welded Pipe A312 A213 TP 304L 316 316L 904L 254SMO 2205

Product Specification

2205 welded stainless steel pipe

Duplex 2205 is a two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5 to 6% nickel alloyed stainless steel. It is the most widely used duplex stainless steel grade and is characterized by high yield strength, double that of the standard austenitic stainless steel grades. It also demonstrates good fatigue strength, as well as outstanding resistance to stress corrosion cracking, crevice, pitting, erosion, and general corrosion in severe environments.

APPLICATIONS:

Chemical processing, transport and storage – pressure vessels, tanks, piping, and heat exchangers

Oil and gas exploration and processing equipment – piping, tubing, and heat exchangers

Marine and other high chloride environments

Effluent scrubbing systems

Pulp and paper industry – digesters, bleaching equipment, and stock-handling systems

Cargo tanks for ships and trucks

Food processing equipment

Biofuels plants

ElementType 2205 (Wt.%)

Carbon: 0.03 max

Manganese: 2.00 max.

Phosphorus: 0.040 max.

Sulfur: 0.030 max.

Silicon: 1.00 max.

Chromium: 21.00-24.00

Nickel: 4.50-6.50

Nitrogen: 0.08-0.20

Molybdenum: 2.50-3.50

Element (Wt.%)

Mechanical Property

Surface Treatment

PIPE

FAQ

Q1: What is your major market?

A1: 95% of our tubes export. We mainly sell to America, Canada, Australia, Japan, Russia, Germany, France, Dubai, Brazil, Chile, India, Thailand, South Africa, Egypt, Nigeria, etc.

Q2: What's the annual output?

A2: We can produce more than 21,000 tons stainless steel tubes in a year.

Q3: What is your welding method?

A3: All of our tubes are welded by TIG welding methods. Our tubes can get fully welding and smooth inner welding, without blisters, leak welding or black line. All of our tube are good for tube bending.

Q4: How do you control the quality during the polishing process?

A4: 1)As for the mirror polish square/rectangular tube, we will polish it as least four times.

2)During the polishing processing, we set a special sanding wheel to polish the welding part.

3)To avoid scratches, after polishing, the tubes will be lay out on a steel crate then we could lift the whole steel crate instead of the tube.

4)On the other hand, we use the gunny bags to protect the tube's surface when the tube laying-out.

Q5: How do you inspect the tubes?

A5: The Quality inspectors inspect the tubes during each production processes from raw material, tube welding, polishing, packaging.

1) Before the production of each machine, we will have the first checked and record the data.

2) During the production, our inspector and engineer have been carefully moniting and we record the data every two hours.

Q6: What is the MOQ?

A6: 2ton.

Q7: What’s the delivery time for the tubes normally in your company?

A7: 20-30 days for 1-4 containers base on the how many items.

Q8: What payment terms you can deal with?

A8: Mostly we deal with TT terms and L/C,for L/C we need to know which bank to open the L/C and after checking the bank information to decide whether to accpet the L/C.If you have other preference, please negotiate.

Q9: Could you print our company logo or information on the tubes plastic bag and the outside package also?Is there extra cost for it?

A9: We can follow customer’s request to print your own information plastic bag for quantity at least 1 container(22-26 tons), and we won’t charge the extra cost.