Changzhou Tengyue has specilized in manufacturing stainless steel seamless pipe and tube since 1991.
We are one of the largest and best manufacturer of stainless steel tube for heat exchanger in China.
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ASTM A312/A999. Seamless Austenitic Stainless Steel Pipes
Nominal Pipe Size (NPS): 1/8, 1/4, 3/8, 1/2, 3/4, 1, 11/4, 11/2, 2, 21/2 inch
Outside Diameter: 10,3 - 73 mm (0,405 - 2,875 inch)
Wall Thickness: 1,73 - 7,01 (0,068 - 0,276 inch)

Notes:
  1. Steel Grades - TP 304, TP 304L, TP 316, TP 321
  2. Size of pipes in accordance with ANSI/ASME B36. 19M.
  3. All technical requirements in accordance with ASTM A530.
  4. Length tolerance of measured pipes is not greater than +10 mm.
  5. The quality of pipes is ensured by manufacturing process and non-destructive test.
  6. Intergranular corrosion test in accordance with ASTM A262, Practice E is available.
Sizes
NPS, inch
OD, mm
Wall Thickness, mm
Max. Length, м
1/8
10,3
1,73; 2,11
12
1/4
13,7
2,24; 3,02
3/8
17,1
2,31; 3,20
1/2
21,3
2,11; 3,73
3/4
26,7
2,87; 3,91
1
33,4
3,38; 4,55; 6,35
10
1 1/4
42,4
3,56; 4,85; 6,35
1 1/2
48,3
3,68; 5,03; 7,14
2
60,3
3,58; 3,91; 4,37; 4,78; 6,35; 6,94; 7,14
2 1/2
73,0
3,58; 3,95; 4,37; 4,78; 5,16; 5,49; 6,35; 7,01

Mechanical properties
Steel Grade
Tensile Strength, N/mm2 (min)
Yield Strength, N/mm2 (min)
Elongation, % (min)
TP304
515
205
35
TP304L
485
170
35
TP316
515
205
35
TP316L
485
170
35
TP321
OD < 17,1 mm - 515;
OD > 17,1 mm - 485
OD < 17,1 mm - 205;
OD > 17,1 mm - 170
35

Chemical Composition (%, max)
Steel Grade
C
Si
Mn
Cr
Ni
Mo
S
P
TP304
0,08
0,75
2
18 - 20
8 - 11
-
0,03
0,04
TP304L
0,035
0,75
2
18 - 20
8 - 13
-
0,03
0,04
TP316
0,08
0,75
2
16 - 18
11 - 14
2 - 3
0,03
0,04
TP316L
0,035
0,75
2
16 - 18
10 - 15
2 - 3
0,03
0,04
TP321
0,08
0,75
2
17 - 20
9 - 13
-
0,03
0,04


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