Stainless Steel Pipes for Heat Exchanger

IOutside path in class deviation mm table 3		Outside path inII class deviation mm table 4
Outside path Admission deviation < 25 ± 0.10 ≥ 25~38.1 ± 0.15 > 38.1~50 ± 0.20 ≥ 50~63.5 0.25 > 63.5~76 ± 0.30 ≥ 76~102 ± 0.40		Outside path Admission deviation ≤ 10 ± 0.15 > 10~32 ± 0.20 > 32~50 ± 0.30 > 50 ± 0.8%

(2)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 ± .

(3)The weld takes care of of settle Chinese foot length as 3 ms~9 ms, general settle the Chinese foot with the 6 ms.
(4)The weld takes care of of settle the Chinese foot length in usually length, its the deviation of admission is the 5 mms of ± .
(5)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 number	Card number	The heat handles Make degree	The anti- pulls the strength MPa	Accept defeat the strength MPa	Extension rate%	Degree of hardnessHRB
0Cr19N19	304	≥ 1010° C Nasty and cold	≥ 520	≥ 205	40	≤ 90
00Cr19Ni11	304L	" "	≥ 480	≥ 175	40	≤ 90
0Cr17Ni12M02	316	" "	≥ 520	≥ 205	40	≤ 90
0Cr17Ni14M02	316L	" "	≥ 480	≥ 175	40	≤ 90
0Cr18Ni11Ti	321	≥ 920° C Nasty and cold	≥ 520	≥ 205	40	≤ 90