Home - Products - Seamless Steel Pipe -

Seamless Steel Pipe(SMLS Pipe)

Seamless Steel Pipe & Tube, Carbon Seamless Steel Pipe,SMLS Pipe & Tube, 

Black Seamless Pipe, GI Seamless Pipe         


Sizes:

Maximum diameter: 36" (914.4mm)      minimum diameter: 1/2" (21.3mm)
Maximum thickness: 60mm                     mininmum thickness: 2.11mm


Uses:

Chilled water pipe Steam/condensate pipe
Heat exchanger pipe
Marine/offshore pipe
Dredging pipe
Industrial pipe
Oil and gas pipe
Fire fighting pipe
Construction/structure pipe
Irrigation pipe
Drain/sewage pipe
Boiler tube


Coating

3PE Coating
3PP Coating
FBE Coating
Epoxy Coating
Special Painting

Standard of carbon seamless steel pipe

ASTM A53 Gr.B Black and hot-dipped zinc-coated steel pipes welded and seamless
ASTM A106 Gr.B Seamless carbon steel for high temperature service
ASTM SA179  Seamless cold-drawn low-carbon steel heat exchanger and condenser tubes
ASTM SA192  Seamless carbon steel boiler tubes for high pressure
ASTM SA210  Seamless Medium-carbon boiler and superheater tubes
ASTM A213 Seamless alloy-steel boiler, superheater, and heat-exchanger tubes
ASTM A333 GR.6 seamless and welded carbon and alloy steel pipe intended for use at low temperatures.
ASTM A335 P9,P11,T22,T91
Seamless ferritic alloy-steel pipe for high-temperature service
ASTM A336 
Alloy steel forgings for pressure and high-temperature parts
ASTM SA519 4140/4130 Seamless carbon for mechanical tubing
API Spec 5CT J55/K55/N80/L80/P110/K55 Seamless steel pipe for casing
API Spec 5L PSL1/PSL2 Gr.b, X42/46/52/56/65/70 Seamless steel pipe for line pipe
DIN 17175 Seamless steel tube for elevated temperture
DN2391  Cold drawn seamless prevision pipe
DIN 1629  Seamless circular unalloyed steel tubes subject to special requirements


Chemical components & mechanical properties

Standard Grade Chemical Components (%)
Mechanical Properties
ASTM A53 C
Si
Mn
P
S
Tensile STrength(Mpa)
Yield STrength(Mpa)
A ≤0.25
- ≤0.95
≤0.05
≤0.06
≥330
≥205
B ≤0.30
- ≤1.2
≤0.05
≤0.06
≥415
≥240
ASTM A106 A
≤0.30
≥0.10
0.29-1.06
≤0.035
≤0.035
≥415
≥240
B
≤0.35
≥0.10
0.29-1.06
≤0.035
≤0.035
≥485
≥275
ASTM SA179 A179 0.06-0.18
- 0.27-0.63
≤0.035
≤0.035
≥325 ≥180
ASTM SA192 A192 0.06-0.18
≤0.25
0.27-0.63
≤0.035
≤0.035
≥325
≥180
API 5L PSL1 A 0.22
- 0.90
0.030
0.030
≥331
≥207
B
0.28
- 1.20 0.030
0.030
≥414
≥241
X42
0.28
- 1.30 0.030
0.030
≥414
≥290
X46
0.28
- 1.40 0.030
0.030
≥434
≥317
X52
0.28
- 1.40
0.030
0.030
≥455
≥359
X56
0.28
- 1.40
0.030
0.030
≥490
≥386
X60
0.28
- 1.40
0.030
0.030
≥517
≥448
X65
0.28
- 1.40
0.030
0.030
≥531
≥448
X70
0.28
- 1.40
0.030
0.030
≥565
≥483
API 5L PSL2 B
0.24
- 1.20
0.025
0.015
≥414
≥241
X42
0.24
- 1.30
0.025
0.015
≥414
≥290
X46
0.24
- 1.40
0.025
0.015
≥434
≥317
X52
0.24
- 1.40
0.025
0.015
≥455
≥359
X56
0.24
- 1.40
0.025
0.015
≥490
≥386
X60
0.24
- 1.40
0.025
0.015
≥517
≥414
X65
0.24
- 1.40
0.025
0.015
≥531
≥448
X70
0.24
- 1.40
0.025
0.015
≥565
≥483
X80
0.24
- 1.40
0.025
0.015
≥621
≥552



Classfication of carbon seamless steel pipe

Types Application
Structure Purposes
General structure and mechanical
Liquid Services
Petroleum, gas and other fluids conveying
Low and Medium Pressure Boiler Tube
Steam and boiler manufacturing
Hydraulic Pillar Service
Hydraulic support
Auto Semi-shaft Casing
Auto sem-shaft casing
Line Pipe
Oil and gas conveying
Tubing and Casing
Oil and gas conveying
Drill Pipes
Well drilling
Geological Drilling Pipe
Geological drilling
Furnace tubes, heat exchangers tubes
Furnace tubes, heat exchangers


Tolerances of carbon seamless steel pipe

Pipe types Pipe sizes(mm) Tolerances
Hot rolled OD<50 ±0.50mm
OD≥50 ±1%
WT<4 ±12.5%
WT 4~20 +15%, -12.5%
WT>20 ±12.5%
Cold drawn OD 6~10 ±0.20mm
OD 10~30
±0.40mm
OD 30~50 ±0.45
OD>50 ±1%
WT≤1 ±0.15mm
WT 1~3 +15%, -10%
WT >3 +12.5%, -10%

Carbon seamless steel pipe is a kind of strip steel. Steel pipe with hollow cross-section, a large number of pipes used to transport fluid, such as the transportation of oil, natural gas, gas, water and some solid materials such as pipes. Steel and round steel and other solid steel compared to the same bending strength in the same bending, lighter weight, is an economic section of steel, is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, Bicycle frames and steel construction scaffolding. The use of carbon seamless steel pipe manufacturing ring parts can improve material utilization, simplify the manufacturing process, save materials and processing time, such as rolling bearing rings, jackets, etc., has been widely used to manufacture steel pipe. 

Maximum diameter: 36" (914.4mm)      minimum diameter: 1/4" (13.7mm)

Maximum thickness: 60mm                     mininmum thickness: 2.11mm


NOMINAL  PIPE  SIZE

OD

(mm)


NOMINAL WALL THICKNESS


DN

NB(inch)

ASME

SCH10

SCH20

SCH30

STD

SCH40

SCH60

XS

SCH80

SCH100

SCH120

SCH140

SCH160

XXS

15

1/2"

21.3

2.11


2.41

2.77

2.77


3.73

3.73




4.78

7.47

20

3/4"

26.7

2.11


2.41

2.87

2.87


3.91

3.91




5.56

7.82

25

1"

33.4

2.77


2.9

3.38

3.38


4.55

4.55




6.35

9.09

32

1.1/4"

42.2

2.77


2.97

3.56

3.56


4.85

4.85




6.35

9.7

40

1.1/2"

48.3

2.77


3.18

3.68

3.68


5.08

5.08




7.14

10.15

50

2"

60.3

2.77


3.18

3.91

3.91


5.54

5.54




8.74

11.07

65

2.1/2"

73

3.05


4.78

5.16

5.16


7.01

7.01




9.53

14.02

80

3"

88.9

3.05


4.78

5.49

5.49


7.62

7.62




11.13

15.25

90

3.1/2"

101.6

3.05


4.78

5.74

5.74


8.08

8.08






100

4"

114.3

3.05


4.78

6.02

6.02


8.56

8.56


11.13


13.49

17.12

125

5"

141.3

3.4



6.55

6.55


9.53

9.53


12.7


15.88

19.05

150

6"

168.3

3.4



7.11

7.11


10.97

10.97


14.27


18.26

21.95

200

8"

219.1

3.76

6.35

7.04

8.18

8.18

10.31

12.7

12.7

15.09

18.26

20.62

23.01

22.23

250

10"

273

4.19

6.35

7.8

9.27

9.27

12.7

12.7

15.09

18.26

21.44

25.4

28.58

25.4

300

12"

323.8

4.57

6.35

8.38

9.53

10.31

14.27

12.7

17.48

21.44

25.4

28.58

33.32

25.4

350

14"

355.6

6.35

7.92

9.53

9.53

11.13

15.09

12.7

19.05

23.83

27.79

31.75

35.71


400

16"

406.4

6.35

7.92

9.53

9.53

12.7

16.66

12.7

21.44

26.19

30.96

36.53

40.19


450

18"

457.2

6.35

7.92

11.13

9.53

14.27

19.05

12.7

23.83

39.36

34.93

39.67

45.24


500

20"

508

6.35

9.53

12.7

9.53

15.09

20.62

12.7

26.19

32.54

38.1

44.45

50.01


550

22"

558.8

6.35

9.53

12.7

9.53


22.23

12.7

28.58

34.93

41.28

47.63

53.98


600

24"

609.6

6.35

9.53

14.27

9.53

17.48

24.61

12.7

30.96

38.89

46.02

52.37

59.54


650

26"

660.4

7.92

12.7


9.53



12.7







700

28"

711.2

7.92

12.7

15.88

9.53



12.7







750

30"

762

7.92

12.7

15.88

9.53



12.7







800

32"

812.8

7.92

12.7

15.88

9.53

17.48


12.7







850

34"

863.6

7.92

12.7

15.88

9.53

17.48


12.7







900

36"

914.4

7.92

12.7

15.88

9.53

19.05


12.7







Mexico
ASTM A500 Gr. 50
Ø12”x 10.31mmx12m
365 Tons
Spain
AISI 316L
219,1 mm  X 5 mm

12060 meters

Singapore
Black Steel Pipe
1/2"-12" SCH40

3502 PCS

Morocco 

ASTM A-213
2"*4.75mm
320 Tons

UAE

ASTM A106-B
2"-6" SCH40
1025.36 Tons
Iraq
API 5L X42 PSL-2
NPS 4” / 114,3 mm OD x 7,11 mm
3500 Tons (tender)
Zambia
ASTM A333 GRADE 6
2 IN, 12.9 MM 6M LONG
425 PCS
Saudi Arabia
API 5L gr.b
10" Nom; SCH 80

18560 meters

Vietnam

DIN 2391
Φ3/4" SCH40 6m long

167 pcs

Nigeria
A-53 GR-B
1"-6" SCH40 / 80
20590 meters (Project)
UAE
API 5L X52 line pipes
8"-24" x 9.53mmx 12m
4501 Tons
Columbia
A 53 Gr B
600 MM dia, Sch 20

263 tons


Pipe is good-looking on appearance.

                                                                                                                                                       ___Armstrong (Mexico)

Logistics is fast and no delay the project schedule.

                                                                                                                                                       ___Bartholomew (Belgium)

Some of pipes is rusty, but not a big problem.

                                                                                                                                                        ___Augustine (Kenya)

Painting is nice.

                                                                                                                                                         ___Catherine (Thailand)

The quality of tubes for construction is not too bad.         

                                                                                                                                                         ___Donna (Columbia)

Professional sales man, next cooperation for you.

                                                                                                                                                         ___Kevin (Singapore)

Price is competitive and make me get the project, thanks hunan stanard steel.

                                                                                                                                                         ___Pamela (Saudi Arabia)