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{"title":"Hollow bar , heavy thickness pipe, 8",10",12",14",SCH40S , 80S, 100, 120, 160 ,","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/da\/92\/2c1d5a072db5a64a592b92a1b6b2-200x200-1\/hollow_bar_2c_heavy_thickness_pipe_2c_8_22_2c10_22_2c12_22_2c14_22_2csch40s_2c_80s_2c_100_2c_120_2c_160_2c_xxs_stainless_steel_sea.jpg","attrs":{"Place of Origin":"China","Brand Name":"YUHONG","Certification":"ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008","Minimum Order Quantity":"100KGS"}}
{"title":"Stainless Steel Seamless Pipe ASTM A312 TP304, Oil and Gas Usage","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/d7\/6a\/ce7addeaf145b837804b99d07cf3-200x200-1\/stainless_steel_seamless_pipe_astm_a312_tp304_2c_oil_and_gas_usage.jpg","attrs":{"Place of Origin":"China","Brand Name":"YUHONG","Certification":"ABS, GL, DNV, NK, PED, AD2000, CCS, ISO 9001-2008","Minimum Order Quantity":"100KGS"}}
ASME SA312 covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high temperature and general corrosive service.
Chemical Composition:
Grade
UNS
Composition, %
Design
C
Mn
P
S
Si
Cr
Ni
Mb
Ti
Nb
N
Cu
Ce
B
Al
TP304
S30400
0.08
2
0.045
0.03
1
18.0–20
8.0–11
. . .
. . .
. . .
. . .
. . .
. . .
TP304L
S30403
0.035
2
0.045
0.03
1
18.0–20
8.0–13
. . .
. . .
. . .
. . .
. . .
. . .
TP304H
S30409
0.04 – 0.1
2
0.045
0.03
1
18.0–20
8.0–11
. . .
. . .
. . .
. . .
. . .
. . .
TP310S
S31008
0.08
2
0.045
0.03
1
24.0- 26
19.0- 22
0.8
. . .
. . .
. . .
. . .
. . .
TP310H
S31009
0.04 – 0.1
2
0.045
0.03
1
24.0–26
19.0–22
. . .
. . .
. . .
. . .
. . .
TP310H
S31035
0.04 – 0.1
0.6
0.025
0.015
0.4
21.5–23.5
23.5–26.5
. . .
. . .
0.40- 0.6
0.20- 0.3
2.5- 3.5
. . .
0.002- 0.008
TP316
S31600
0.08
2
0.045
0.03
1
16.0–18
10.0–14
2.00–3
. . .
. . .
. . .
. . .
. . .
TP316L
S31603
0.035
2
0.045
0.03
1
16.0–18
10.0–14
2.00–3
. . .
. . .
. . .
. . .
. . .
TP316H
S31609
0.04 – 0.1
2
0.045
0.03
1
16.0–18
10.0–14
2.00–3
. . .
. . .
. . .
. . .
. . .
TP317
S31700
0.08
2
0.045
0.03
1
18.0–20
11.0–15
3.0–4
. . .
. . .
. . .
. . .
. . .
TP317L
S31703
0.035
2
0.045
0.03
1
18.0–20
11.0–15
3.0–4
. . .
. . .
. . .
. . .
. . .
TP321
S32100
0.08
2
0.045
0.03
1
17.0–19
9.0–12
. . .
Ti 5 × (C+N) min, 0.70 max
. . .
0.1
. . .
. . .
TP321H
S32109
0.04 – 0.1
2
0.045
0.03
1
17.0–19
9.0–12
. . .
4(C+N) min; 0.70 max
. . .
0.1
. . .
. . .
TP321H
S32654
0.02
2.0-4
0.03
0.005
0.5
24.0–25
21.0–23
7.0-8
. . .
. . .
0.45- 0.55
0.30-0.6
. . .
TP321H
S33228
0.04 – 0.08
1
0.02
0.015
0.3
26.0–28
31.0–33
. . .
. . .
0.60- 1
. . .
. . .
0.05 – 0.1
0.025
TP321H
S34565
0.03
5.0-7
0.03
0.01
1
23.0–25
16.0–18
4.0-5
. . .
0.1
0.40- 0.6
. . .
. . .
TP347
S34700
0.08
2
0.045
0.03
1
17.0–19
9.0–13
. . .
. . .
See Spec
. . .
. . .
. . .
TP347H
S34709
0.04 – 0.1
2
0.045
0.03
1
17.0–19
9.0–13
. . .
. . .
See Spec
. . .
. . .
. . .
Alloy 20
N08020
0.07
2
0.045
0.035
1
19.0–21
32.0–38
2.0–3
. . .
See Spec
. . .
3.0– 4
. . .
. . .
. . .
Alloy 20
N08367
0.03
2
0.04
0.03
1
20.0–22
23.5–25.5
6.0–7
. . .
. . .
0.18–0.25
0.75
. . .
. . .
. . .
Alloy 20
N08028
0.03
2.5
0.03
0.03
1
26.0–28
30.0–34
3.0–4
0.60–1.4
Alloy 20
N08029
0.02
2
0.025
0.015
0.6
26.0–28
30.0–34
4.0–5
0.6– 1.4
Product Analysis
At the request of the buyer, the analysis of one billet or one length of flat-rolled stock from each heat, or two pipes from each lot shall be made by the manufacturer. A lot of pipe shall consist of the following number of lengths of the same size and wall thickness from any one heat of steel:
Grade 316 is an austenitic stainless steel that can operate from 450 degrees Celsius to 850 degrees Celsius roughly. The range differs depending on the pressure of a system, the components flowing inside the pipe and the environment outside it. Marine environment is full of chloride ions and the wind and water are salty.
The salty conditions catalyze all forms of corrosions because they act as a medium for electron transfer for oxidation and reduction chemical reactions. The 316L has a lower carbon content than the 316 which means, there is less intergranular precipitation and local corrosion due to welding. Also, the material has molybdenum in addition to chromium and nickel which is specifically resistant to chloride ion stress corrosion.
These properties make the pipe resistant to crevice and pitting corrosion under chloride ion. Since the marine environments is full of chloride ions, the 316L material is resistant to chloride ion corrosion, has an operating temperature range up to roughly 850 degrees Celsius (1550F to be exact), the combination makes the pipes suitable for piping projects in the marine industry and temperature up to 850 degrees Celsius.
Hydrostatic or Nondestructive Electric Test
Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.
For pipe whose dimensions equal or exceed NPS 10, the purchaser, with the agreement of the manufacturer, may waive the hydrostatic test requirement when in lieu of such test the purchaser performs a system test. Each length of pipe furnished without the completed manufacturer’s hydrostatic test shall include with the mandatory markings the letters “NH.”
Nondestructive Electric Test:
Nondestructive electric tests shall be in accordance with Specification A 999/A 999M.
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
