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Materials in Plate Heat Exchanger


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

1. Plates Materials

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.

2. Gasket Materials

Nitrile rubber (NBR)General purpose, oil resistant
EPDM General purpose, elevated temperatures
Heat Seal For high temperatures, specially heating by steam

3. 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

 

4. 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.


5. 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


6. 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.