China Stainless Steel Welded Corrugated Tubes

Raw material from POSCO
stainless steel tube for heat exchanger
Specifications:
1) Diameters: 4 101.6mm
2) W.T.: 0.4 3.0mm
3) Grades: 316L/304/304L/310S,etc.
4)standard:GB/ISO/EN/ASTM/JIS,etc.
5)application range:widely use in the foodstuff,medical equipment,power,boiler,cooler,auto,condenser etc.
6)packing: inner packing:1 pc/plastic bag;outer packing:bundles in weaving bags or in plywooden case.

1,Size accuracy
The outside path admission deviation that solder take care of includes the elliptical park a cent I , II two class, see the table 3, table 4.

IOutside path in class deviation mm table 3 Outside path inII class deviation mm table 4

Outside pathAdmission deviation

<25±0.10

≥25~38.1±0.15

>38.1~50±0.20

≥50~63.50.25

>63.5~76±0.30

≥76~102±0.40

Outside pathAdmission deviation

≤10±0.15

>10~32±0.20

>32~50±0.30

>50±0.8%

The thick the deviation of admission( do not include the weld sew) in wall of the weld tube is for ruling the wall thick 10% of ±, but minimum admission deviation is the 0.02 mms of ±.
The weld takes care of of settle Chinese foot length as 3 ms~9 ms, general settle the Chinese foot with the 6 ms.
The weld takes care of of settle the Chinese foot length in usually length, its the deviation of admission is the 5 mms of ±.
Adopt partial the degree of flinch in a the tube of weldfor keeping the Chinese foot measurement should not very in 2.0 mms.
2,The machine function sees the table 5
table 5

Steel numberCard numberThe heat handles
Make degree
The anti- pulls the strength
MPaAccept defeat the strength
MPaExtension rate%Degree of hardnessHRB

0Cr19N19304≥1010°C
Nasty and cold≥520≥20540≤90

00Cr19Ni11304L" "≥480≥17540≤90

0Cr17Ni12M02316" "≥520≥20540≤90

0Cr17Ni14M02316L" "≥480≥17540≤90

0Cr18Ni11Ti321≥920°C
Nasty and cold≥520≥20540≤90

Steel numberCard numberThe heat handles
Make degree
The anti- pulls the strength
MPaAccept defeat the strength
MPaExtension rate%Degree of hardnessHRB0Cr19N19304≥1010°C
Nasty and cold≥520≥20540≤9000Cr19Ni11304L" "≥480≥17540≤900Cr17Ni12M02316" "≥520≥20540≤900Cr17Ni14M02316L" "≥480≥17540≤900Cr18Ni11Ti321≥920°C
Nasty and cold≥520≥20540≤90