What causes corrosion of stainless steel welded pipes?

- Jan 06, 2021-

                                   With the popularization of stainless steel welded pipe applications, the performance of stainless steel welded pipes has attracted more and more attention. Corrosion occurs when stainless steel welded pipes are used for a long time. What causes corrosion of stainless steel welded pipes?

  There are two main reasons for the corrosion of stainless steel welded pipes: 70% of them are processed and processed. Due to the pollution of iron and copper tools during processing, the argon gas in the welding is not well protected and oxidation occurs. In addition, excessive damage to the surface of the stainless steel factory anti-oxidation layer during processing may cause contamination of stainless steel and lead to rust; in part, the equipment type does not take into account the process needs, such as sulfuric acid in the wine industry, sulfur dioxide sealing Among them, sulfur is more corrosive to stainless steel, and 316L anti-corrosion stainless steel plate is used in the industry for the top or upper tube section.


  There are three solutions to this situation:


  First, protect the surface of the stainless steel plate from being affected during processing, and do anti-corrosion treatment at the bottom. For the processing party, the welding material is higher than the base material;


  Second, adequate protection of argon;


  The third is film protection. When processing, stainless steel welded pipe tools, wooden hammers, rubber, carpets, wood boards and other tools are used to contact the surface of the stainless steel plate to avoid contact with iron and copper tools.


Product Description
304  304L 316L 321 310 347 2205 2507 904l  stainless steel pipe/stainless steel tube
Outside Diameter
OD 0.28-1219mm

Thickness
0.08-100mm
Production Process
Cold DrawnBright Anneal etc
Type
Seamless,welded
Surface
Pickling,Bright;
Price Item
EXW,FOB,CNF,CIF etc
Application
1).Heat exahanger tube for petrochemical,chemical and ocean development
2).Industrial furnace and heater tubes
3).for gas turbine and prochemical processing4).Condenser tubes,sulfuric and phosphoric acids tubes,API tubing
5).Construction and ornament
6).Acid production,waste incineration,FGD,paper processing industrial etc
Ends:
Beveled or plain end, square cut, burr free
Products Photos
Packing & Delivery

Packing: 1.wooden box
                  2.carton
Delivery time: 15-25 days,depend on the actual quantity and stock situation.

1.Anti-wet bag

2.Wooden Box

3.Wooden Box + Tube End

Our Service

Beall promise best quality,competitive price and professional service.
1.Free sample is available.
2.Mill Test Certificate is supplied with shipment.
3.The third party inspection is accepted.

Our Company

Production

Production

Production

Hydrostatic Test

Flaw Detection Test

Lab Test

Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.

No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.

CSPG  has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation. 


We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.

Our Certificate
FAQ

Q: Are you trading company or manufacturer ?

A: We are manufacturer

Q: How long is your delivery time?

A: Generally it is 7-10 days if products are in stock. or about 20-25 days if the goods are not in stock, it is according to quantity.

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, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.