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U Bend Ferritic Tubes for Heat Exchangers

The ferritic stainless steels are identified by 400 Series numbers. These straight-chromium alloys are not hardenable by heat treatment and only slightly hardenable by cold working.
Main ultra-pure ferrite grades and quantitative requirements, production cycle Representative ultra-pure ferrite grades: 439, 443M, 444, 446, 445J1, 445J2.
MOQ Requirement: 439, 443M, 444 need more than 16 tons to set the production cycle 55-60 days.
446, 445J1, 445J2 need more than 60 tons, the production cycle is 100 days.

  • 444、445/445J1/445J2
  • RONSCO
  • RonscoFT-1

Utral-pure Ferritic is refers to the gap element such as carbon,nitrogen content of ferritic stainless steel wich are very low, C+N≤120ppm-400ppm(250ppm,150ppm)at any temperature,its mircrostructure is ferritic structure,chromium content of 17%-30% and 0-4% molybdenum content of iron base chrome molybdenum alloy.

 

Specifications 
409L444436L and so on hyperpure ferritic stainless steel, 
The current development of steel grades: exhaust system (409 l, 429, 436 l, 439 m, 441), decoration (439, 443), water system (444445/445J1/445J2/446

Standard

ASTM A268 Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

JIS G3463 Stainless Steel for Boiler and Heat Exchanger Tubes

GB/T 30065 Welded ferritic stainless steel tubes for feedwater heater

GB/T 30066 Welded ferritic stainless steel tubes for heat-exchanger and condenser

Features
A, good resistance to stress corrosion, all kinds of partly corrosion resistance and good oxidation resistance medium uniform corrosion ability (including high temperature oxidizing)
B, low density, under the condition of the same weight, material can be saved 2.5%
C, heat conduction performance is good
D, small thermal expansion coefficient
E, the large modulus of elasticity
F, good processing performance
1. The cold hardening tend to be low, for larger cold deformation, generally without intermediate annealing

2. Easy to cold bending, stamping, beading, pressure testing, cold forging and cutting
3. Good deep drawing performance.

Application:

· Heat Exchangers

· Boilers

· Condensers

· Chemical and Petrochemical

· Fertilizer Industry

Packing & Deliver:

Ultra pure Ferritic Packing892 Ultra pure Ferritic Packing823472 Ultra pure Ferritic Packing52461 

 Ultra pure Ferritic Packing042343Ultra pure Ferritic Packing1927113Ultra pure Ferritic PackingY1


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