1.4438 Large diameter stainless steel pipe

317 is an austenitic chromium-nickel stainless steel with excellent corrosion resistance. Alloy 317 is the most corrosion-resistant of all 300 series stainless steels and has the highest tensile and creep strength properties at elevated temperatures. The high molybdenum content gives the alloy excellent resistance to pitting corrosion.

317L is a molybdenum-containing low-carbon austenitic stainless steel with more chromium, nickel and molybdenum added for better corrosion resistance and enhanced chemical attack by sulfurous acid, acetic acid, formic acid, citric acid and tartaric acid sex. Due to its lower carbon content, 317L also offers resistance to sensitization during welding and higher creep, breaking stress and tensile strength at elevated temperatures. It is non-magnetic in the annealed state but may become slightly magnetic after welding.

Chemical Composition

Elements	Content
Chromium	18% to 20%
Nickel	11% to 15%
Manganese	2%
Molybdenum	3% to 4%
Titanium	0.7%
Silicon	0.75%
Carbon	0.03%
Phosphorous	0.045%
Nitrogen	0.1%
Sulfur	0.03%
Iron	Balance

product feature

Heat treatment options
1 +A: Annealing (complete/softening/spheroidizing)

2 +N: normalization

3 +NT: normalizing and tempering

4 +QT: Conditioning (water/oil)

5 +AT: solution annealing

6 +P: precipitation hardening

Surface options
1 black surface

2 Grounded: bright but rough; imprecise

3. Sheet processing: bright and precise; small turning scars

4 Peeling/turning: bright and precise; small turn scars

5 Polish: Very bright and dimensionally accurate; no scarring

application

317/317L is commonly used to treat sulfur, pulp liquors, acid dyes, acetylation and nitration mixtures, bleaching solutions, heavy coal and petroleum, and many chemical compounds. Some other applications using 317L alloy include:

Paper and pulp handling equipment
Chemical and petrochemical processing equipment
Condensers for fossil fuel and nuclear fuel power stations
food processing equipment
Textile equipment

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FAQ

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?
A: Payment<=1000USD, 50% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment.or negotiable

Q: What are the advantages of your company ?
A: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless steel companies.

Q:About 1.4438 Large diameter stainless steel pipe product prices?
A:Prices vary from period to period due to cyclical changes in the price of raw materials.

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