Stainless steel pipes are a kind of economical cross section steel and it is an important product in iron and steel industry. Stainless steel tube is broadly utilized in decorative and industrial line, for example, most people use stainless steel tube to make stair handrail, protective windows, railings and furniture etc. The common two materials are 201 and 304, which is accounted about 8%-16% of the total steel and has a wide range of applications.
There is different diameters of Stainless Steel Pipes.
Due to hollow section, the steel pipes are suitable for transporting pipeline of liquid, gas, and solid; Compared with the same weight of round steel, the steel tubes has big section coefficient and large bending torsional strength, so it has become a major material for all kinds of mechanical and architectural structure. Under the equal weight condition, the structure and components made with stainless steel tube have lager section modulus than the solid parts. Therefore, stainless steel pipe is a kind of economic cross section steel of saving metal and is an important part of efficient steel. Above all, the oil drilling, refining and transportation etc. have bigger demand. Next, stainless steel tubes have a wide scope in geological drilling, chemical industry, building industry, aircraft and automobile manufacture as well as boiler, medical equipment, furniture and bicycle production etc. With development of new technology in rocket, missile and aerospace industry, stainless steel pipes have become more and more important in defense industry, science and technology and economic development. Therefore, it is important for you to select a reliable stainless steel pipe manufacturer.
Main Grade of Stainless Steel Pipe and Applications
There is different diameters of Stainless Steel Pipes.
Due to hollow section, the steel pipes are suitable for transporting pipeline of liquid, gas, and solid; Compared with the same weight of round steel, the steel tubes has big section coefficient and large bending torsional strength, so it has become a major material for all kinds of mechanical and architectural structure. Under the equal weight condition, the structure and components made with stainless steel tube have lager section modulus than the solid parts. Therefore, stainless steel pipe is a kind of economic cross section steel of saving metal and is an important part of efficient steel. Above all, the oil drilling, refining and transportation etc. have bigger demand. Next, stainless steel tubes have a wide scope in geological drilling, chemical industry, building industry, aircraft and automobile manufacture as well as boiler, medical equipment, furniture and bicycle production etc. With development of new technology in rocket, missile and aerospace industry, stainless steel pipes have become more and more important in defense industry, science and technology and economic development. Therefore, it is important for you to select a reliable stainless steel pipe manufacturer.
Main Grade of Stainless Steel Pipe and Applications
| Grades | Applications |
| 301 | It is used for forming products with good ductility and good weldability. Abrasion resistance and fatigue strength is better than that of304 stainless steel. It can harden rapidly by mechanical processing. |
| 302 | The corrosion resistance of 302 is the same with 304. Due to high carbon content, intensity is better. |
| 303 | It is easier to cut processing than 304 by adding a little sulfur and phosphorus. |
| 304 | It is18/8 stainless steel. GB brand is 0Cr18Ni9. |
| 316 | After 304, it is the second to get widest applications. It is mainly used to food industry, pharmaceutical industry and surgical equipment. Adding molybdenum elements make 316 stainless steel gets a special structure of corrosion resistant. Because it has much better ability to resist chloride corrosion, it is often used as marine steel. SS316 is usually used for nuclear fuel recycling equipment. |
| 400 | 400 series Ferrite and martensite stainless steel |
| 408 | Weak corrosion resistance and good heat resistance. Cr: 11%;Ni:8% |
| 409 | The cheapest model (), it is usually used as auto vent pipe and is a ferritic stainless steel (chrome steel). |
| 410 | Martensite stainless steel with good abrasion resistance and weak corrosion resistance. |
| 416 | Adding sulfur can improve the processing properties of material. |
| 420 | Rj martensitic steel which is similar to brinell high chromium steel. It is used as surgical tools. |
| 430 | Ferritic stainless steel with good formability and poor temperature resistance and corrosion resistance. It is mainly used to decorate. |
| 440 | High strength cutting steel with high carbon. After appropriate heat treatment, it can obtain higher yield strength, the hardness can reach 58 HRC. It belongs to the most hardest stainless steel. The most common example is razor blade. Common models:440A, 440B, 440C. |
| 500 | 500 series-heat resistant chromium alloy steel |
| 600 | 600 series-martensitic precipitation hardening stainless steel pipe |
According to different applications, stainless steel pipe is divided into oil well pipe (casing pipe, oil pipe and drill pipe), line pipe, boiler pipe, mechanical structural pipe, hydraulic prop tube, vessel tube, geological tube, chemical pipe (high pressure fertilizer pipe, oil cracking pipe) and marine pipe etc.
Table 1 Domestic Stainless Steel Standard Grade
| China | Japan | U.S.A | U.K. | Germany | France | Russia |
|
GB1220-92 GB3280-92 |
JIS | AISIUNS | BS970BS1449 |
DIN17440 DIN17224 |
NFA35-575 NFA35-576 |
ГОСТ5632 |
| 0Cr13 | SUS410S | S410 | ||||
| 1Cr13 | SUS410 | 410 | 410S21 | X7Cr13 | Z6C13 | 08X13 |
| 2Cr13 | SUS420J1 | 420J1 | 420S29 | X20Cr13 | Z20C13 | 20x13 |
| 1Cr17 | SUS430 | 430 | ||||
| 7Cr17 | SUS440A | 440A | ||||
| 9Cr18 | SUS440C | 440C | X105CrMo17 | Z100CD17 | 95X18 | |
| 0Cr18Ni9 | SUS304 | 304 | 304S15 | X5CrNi189 | Z6CN18.09 | 08X18H10 |
| 00Cr19Ni10 | SUS304L | 304L | 304S12 | X2CrNi189 | Z2CN18.09 | 03X18H11 |
| 0Cr17Ni12Mo2 | SUS316 | 316 | 316S16 | X5CrNiMo1812 | Z6CND17.12 | |
| 00Cr17Ni14Mo2 | SUS316L | 316L | 316S12 | X2CrNiMo1812 | Z2CND17.12 | 03X17H14M2 |
| 0Cr18Ni11Ti | SUS321 | 321 | X10CrNiTi189 | Z6CNT18.10 | 08X18H10T | |
| 0Cr18Ni11Nb | SUS347 | 347 | 347S17 | X10CrNiNb189 | Z6CNNb18.10 | 08X18H12F |
Table 2 Chemical Compositions of Martensite, Ferrite, Austenite and Diphasic Stainless Steel
| Grade | Mark | Chemical Compositions(%) | ||||||||||
| C | Cr | Ni | Mn | P | S | Mo | Si | Cu | N | Others | ||
| 201 |
1Cr17Mn 6Ni5N |
≤0.15 |
16.00- 18.00 |
3.50- 5.50 |
5.50－ 7.50 |
≤0.060 | ≤0.03 | - | ≤1.00 | - | ≤0.25 | - |
| 201L |
03Cr17Mn 6Ni5N |
≤0.03 |
16.00- 18.00 |
3.50- 5.50 |
5.50－ 7.50 |
≤0.060 | ≤0.03 | ≤1.00 | ≤0.25 | |||
| 202 |
1Cr18Mn 8Ni5N |
≤0.15 |
17.00- 19.00 |
4.00- 6.00 |
7.50- 10.00 |
≤0.060 | ≤0.03 | ≤1.00 | - | ≤0.25 | - | |
| 204 |
03Cr16Mn 8Ni2N |
≤0.03 |
15.00- 17.00 |
1.50- 3.50 |
7.00- 9.00 |
0.15- 0.30 |
||||||
| China |
1Cr18Mn10Ni 5Mo3N |
≤0.10 |
17.00- 19.00 |
4.00- 6.00 |
8.50- 12.00 |
2.8- 3.5 |
0.20- 0.30 |
|||||
| Russia |
2Cr13Mn 9Ni4 |
0.15- 0.25 |
12.00- 14.00 |
3.70- 5.00 |
8.00- 10.00 |
|||||||
| China |
2Cr15Mn 15Ni2N |
0.15- 0.25 |
14.00- 16.00 |
1.50- 3.00 |
14.00- 16.00 |
0.15- 0.30 |
||||||
|
1Cr18Mn 10Ni5Mo3N |
≤0.15 |
17.00- 19.00 |
4.00- 6.00 |
8.50- 12.00 |
≤0.060 | ≤0.03 |
2.8- 3.5 |
≤1.00 | - |
0.20- 0.30 |
- | |
| 301 | 1Cr17Ni7 | ≤0.15 |
16.00- 18.00 |
6.00- 8.00 |
≤2.00 | ≤0.065 | ≤0.03 | - | ≤1.00 | - | - | - |
| 302 | 1Cr18Ni9 | ≤0.15 |
17.00- 19.00 |
8.00- 10.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | - |
| 303 | Y1Cr18Ni9 | ≤0.15 |
17.00- 19.00 |
8.00- 10.00 |
≤2.00 | ≤0.20 | ≤0.03 | 1) | ≤1.00 | - | - | - |
| 303se |
Y1Cr18Ni 9Se |
≤0.15 |
17.00- 19.00 |
8.00- 10.00 |
≤2.00 | ≤0.20 | ≤0.03 | - | ≤1.00 | - | - | Se≥0.15 |
| 304 | 0Cr18Ni9 | ≤0.07 |
17.00- 19.00 |
8.00- 10.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | - |
| 304L | 00Cr19Ni10 | ≤0.03 |
18.00- 20.00 |
8.00- 10.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | - |
| 304N1 | 0Cr19Ni9N | ≤0.08 |
18.00- 20.00 |
7.00- 10.50 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - |
0.10- 0.25 |
- |
| 304N2 |
0Cr18Ni 10NbN |
≤0.08 |
18.00- 20.00 |
7.00- 10.50 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - |
0.15- 0.30 |
Nb≤0.15 |
| 304LN |
00Cr18Ni 10N |
≤0.03 |
17.00- 19.00 |
8.50- 11.50 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - |
0.12- 0.22 |
- |
| 305 | 1Cr18Ni12 | ≤0.12 |
17.00- 19.00 |
10.50- 13.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | |
| 309S | 0Cr23Ni13 | ≤0.08 |
22.00- 24.00 |
12.00- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | |
| 310S | 0Cr25Ni20 | ≤0.08 |
24.00- 26.00 |
19.00- 22.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | - |
| 316 |
0Cr17Ni 12Mo2 |
≤0.08 |
16.00- 18.50 |
10.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.00- 3.00 |
≤1.00 | - | - | - |
|
1Cr18Ni 12Mo2Ti6) |
≤0.12 |
16.00- 19.00 |
10.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
1.80- 2.50 |
≤1.00 | - | - |
Ti5 (C%-0.02)~ 0.08 |
|
|
0Cr18Ni 12Mo2Ti |
≤0.08 |
16.00- 19.00 |
10.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
1.80- 2.50 |
≤1.00 | - | - |
Ti5*C%- 0.70 |
|
| 316L |
00Cr17Ni 14Mo2 |
≤0.03 |
16.00- 18.00 |
12.00- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.00- 3.00 |
≤1.00 | - | - | - |
| 316N |
0Cr17Ni 12Mo2N |
≤0.08 |
16.00- 18.00 |
10.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.00- 3.00 |
≤1.00 | - | - | - |
| 316N |
00Cr17Ni 13Mo2N |
≤0.03 |
16.00- 18.50 |
10.50- 14.50 |
≤2.00 | ≤0.035 | ≤0.03 |
2.00- 3.00 |
≤1.00 | - | - | - |
| 316J1 |
0Cr18Ni 12Mo2Cu2 |
≤0.08 |
17.00- 19.00 |
10.50- 14.50 |
≤2.00 | ≤0.035 | ≤0.03 |
1.20- 2.75 |
≤1.00 |
1.00- 2.50 |
- | - |
| 316J1L |
00Cr18Ni 14Mo2Cu2 |
≤0.03 |
17.00- 19.00 |
12.00- 16.00 |
≤2.00 | ≤0.035 | ≤0.03 |
1.20- 2.75 |
≤1.00 |
1.00- 2.50 |
- | - |
| 317 |
0Cr19Ni 13Mo3 |
≤0.12 |
18.00- 20.00 |
11.00- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 |
3.00- 4.00 |
≤1.00 | - | - | - |
| 317L |
00Cr19Ni 13Mo3 |
≤0.08 |
18.00- 20.00 |
11.00- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 |
3.00- 4.00 |
≤1.00 | - | - | - |
|
1Cr18Ni 12Mo3Ti6) |
≤0.12 |
16.00- 19.00 |
11.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.50- 3.50 |
≤1.00 | - | - |
Ti5 (C%-0.02)~ 0.08 |
|
|
0Cr18Ni 12Mo3Ti |
≤0.08 |
16.00- 19.00 |
11.00- 14.00 |
≤2.00 | ≤0.035 | ≤0.03 |
2.50- 3.50 |
≤1.00 | - | - |
Ti5*C%- 0.70 |
|
| 317J1 |
0Cr18Ni 16Mo5 |
≤0.04 |
16.00- 19.00 |
15.00- 17.00 |
≤2.00 | ≤0.035 | ≤0.03 |
4.00- 6.00 |
≤1.00 | - | - | - |
| 321 | 1Cr18Ni9Ti6) | ≤0.12 |
17.00- 19.00 |
8.00- 11.00 |
≤2.00 | ≤0.035 | ≤0.030 | - | ≤1.00 | - | - |
Ti5 (C%-0.02)~ 0.08 |
| 0Cr18Ni10Ti | ≤0.08 |
17.00- 19.00 |
9.00- 12.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | Ti≥5*C% | |
| 347 | 0Cr18Ni11Nb | ≤0.08 |
17.00- 19.00 |
9.00- 13.00 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 | - | - | Nb≥10*C% |
| XM7 | 0Cr18Ni9Cu3 | ≤0.08 |
17.00- 19.00 |
8.50- 10.50 |
≤2.00 | ≤0.035 | ≤0.03 | - | ≤1.00 |
3.00- 4.00 |
- | - |
| XM15J1 | 0Cr18Ni13Si4 | ≤0.08 |
15.00- 20.00 |
11.50- 15.00 |
≤2.00 | ≤0.035 | ≤0.03 | - |
3.00- 5.00 |
- | 2) | |