317L uns S31703 bolt manufacturer head markings threaded rod welded

General information:

Corrosion Resistance

317L has excellent corrosion resistance in a wide range of chemicals, especially in acidic chloride environments such as those encountered in pulp and paper mills. Increased levels of chromium, nickel and molybdenum compared to 316L stainless steel improve resistance to chloride pitting and general corrosion. Resistance increases with molybdenum alloy content. 317L is resistant to sulfuric acid concentrations up to 5 percent at temperatures as high as 120°F (49°C). At temperatures under 100°F (38°C) this alloy has excellent resistance to solutions of higher concentration. However, service tests are recommended to account for the affects of specific operating conditions that may affect corrosion behavior. In processes where condensation of sulfur-bearing gases occurs, 317L is much more resistant to attack at the point of condensation than conventional alloy 316. The acid concentration has a marked influence on the rate of attack in such environments and should be carefully determined by service tests.

Chemical Composition, %

What are the characteristics of 317L Stainless?

• Improved general and localized corrosion to 316L stainless
• Good formability
• Good weldability

In what applications is 317L Stainless used?

• Flue-gas desulfurization systems
• Chemical process vessels
• Petrochemical
• Pulp and Paper
• Condensers in power generation

Mechanical Properties
Minimum Specified Properties, ASTM A240

our factory pictures:

super duplex 2507 din 931 stainless steel bolt  acier duplex 

our inspection machine pictures:

 ss 309s thread rod and washer stainless steel studs

our Packing pictures:

How every order moves:

1. Inquiry - professional quotation

2. Confirm price, delivery time, weight, HS code, payment term etc.

3. Rachel, that’s me , will sent you proforma invoice

4. Client make payment and sent us bank slip to start production

5. Let you know the production information every five days 

6. Sent you finished products pictures and inspection pictures

7. Client arrange balance payment 

8. Raw material certificate, mill test certificate with chemical and mechanical property on, Size inspection report packing list ,commercial invoice will be sent to you.

9. Sent you Bill of lading to track the shipment ,or express tracking number

10. After receiving goods one month later, we will sent you a feedback form to know whether our goods function well

  Other proucts and some non standard products manufacture as drawing:

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