What kind of materials does plate heat exchangers’ framework usually adopt?



Plate heatexchanger framework is composed of fixed and moveable plates (including baffle, the intermediate plate), upper and lower guiding bars, columns, tightening bolts, anchors, etc. 

一、PlatesMaterials

material grades
standard
type
Q235A
GB/T700
carbon steel
Q235B
Q235C
16MnR
GB/T713
pressure vessel steel
Q235A
GB/T1591
0Cr18Ni9
GB/T4257
stainless steel
00Cr19Ni10

Note: fixed and moveable plates (including baffle, the intermediate plate) can be coated by 0Cr18Ni9, 0Cr17Ni12M02.

二. Bolts Materials

material grades
standard
type
Q235A
GB/T700
carbon steel
35
GB/T699
quality carbon steel
45
40Cr
GB/T3077
alloy steel
35CrMoA
35CrMo
2Cr17
GB/T1220
stainless steel
0Cr18Ni9

三. Upper and lower guiding bars
Small plate exchanger: Using round steel. Commonly used 35, 45 or stainless steel 304
Large plate exchanger: Using the I-beam, H-beam. Commonly used Q235, 35, and stainless steel 304.

四. Column、Anchor:
column: Using the U-section steel, I-beam, H-beam. Commonly used Q235, 35, and stainless steel 304.
anchor: Using Q235, 35, stainless steel 304

五. Selection

When you select materials, it is necessary to consider their working conditions: for example using stainless steel materials on food machinery. Choosing container plate, intensity is higher than carbon steel, but the price will be higher. Choosing alloy steel/quality carbon steel, intensity is higher than that of carbon steel, but need a higher price and longer delivery time. The intensity of stainless steel is lower than carbon steel. Please take into consideration the influences of various factors.

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