Products - Steel Pipes - Seamless Steel Pipe
Seamless Steel Pipe
Seamless Steel Pipe
Seamless Steel Pipe
Seamless Steel Pipe

Seamless Steel Pipe

Seamless Steel Pipe

Seamless Steel Pipe

Seamless Steel Pipe

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  • Process
  • Equipment
  • Dimension
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Seamless Steel Pipe( SMLS Steel Pipe ),Seamless Steel Tube

Types of Seamless Steel Pipe from Our Factory

Types
Uses
Structure Purposes
General structure and mechanical
Liquid Services
Petroleum, gas and other fluids conveying
Low and Medium Pressure
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 Pipes
Geological drilling
Petroleum Cracking Tubes
Furnace tubes, heat exchangers


Standards and Applications

Standards Grades Class
API API 5L
Line pipe for pipeline transportation systems
API 5CT
Tubing and casing for wells
API 5DP
Drill Pipe for well drilling
ASTM ASTM A53
Used as structural steel or for low-pressure plumbing
ASTM A106
seamless carbon steel pipe for high-temperature service
ASTM A335
for seamless ferritic alloy-steel pipe for high-temperature service
ASTM A213
for seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes
ASTM A179
for seamless Cold-drawn low-carbon steel heat-exchanger and condenser tubes
ASTM A192
for seamless carbon steel boiler tubes for high-pressure service
ASTM A210
for seamless medium-carbon steel boiler and superheater tubes
ASTM A333
for seamless steel pipe for low-temperature service and other applications with required notch toughness
ASTM A519
for seamless carbon and alloy steel mechanical tubing
ASTM A252
for seamless and welded steel pipe piles
DIN DIN 17175
for heat resistant seamless steel pipe lines
DIN 1629
for seamless circular tubes of non alloys steels wth special quality requirements
DIN 2391
for cold drawn or cold rolled precision seamless steel tubes
JIS JIS G3454
seamless carbon steel pipe for pressure service
JIS G3456
seamless carbon steel pipe for high temperature service
JIS G3461
seamless carbon steel pipe for boiler and heat exchanger
EN EN 10210
for hot finished seamless structural hollow sections of non-alloy steels
EN 10216
seamless steel tubes for pressure purposes
BS BS 3059
for carbon,alloy and austenitic stainless steel tubes with specified elevated temperature properties

Dimension Tolerances of Seamless Steel Pipe

Pipe types

Pipe Szie(mm)

Tolerances

Hot rolled

OD

<50

±0.50mm

≥50

±1%

WT

<4

±12.5%

≥4~20

+15%, -12.5%

>20

±12.5%

Cold drawn

OD

6~10

±0.20mm

10~30

±0.40mm

30~50

±0.45

>50

±1%

WT <1 ±0.15mm
>1~3
+ 15%, - 10%
>3
+ 12.5%, - 10%


Sizes: Out Diameter: 1-1/4"-16", Wall Thickness: 0.109"-0.562"

Standard:ASTM A53, ASTM A106, ASTM A500/501-98, ASTM A519-98, JIS G3441-1994, JIS G3444-1994, BS EN 10210-1

Application:Used in the general structure and the mechanism, including construction, machinery, transportation

Sizes: Out Diameter: 6.0mm-114.0mm, Wall Thickness: 1.0mm-15.0mm

Standard: GB3087-1999, ASTM A179, ASTM A106, JIS G3454
Application:Used for manufacturing superheated pipelines, the steam pipe, boiling water tube, flue tube, small flue tube, etc.

Sizes: Out Diameter: 19.05-168.3mm, Wall Thickness: 2.31-14.27mm

Standard:GB/T8163-1999, ASTM A53-98, JIS G3452-1998, JIS G3454-1998, ASTM A106, DIN 1629-1984
Application:For conveying of petroleum, gas and other fluids

Sizes: Out Diameter: 73-630mm, Wall Thickness: 6-35mm
Standard:API 5L
Application:For gas, water, transportation in Petroleum and natural gas industries

Sizes: Out Diameter: 2-7/8"-6-5/8", Wall Thickness: up to 0.813"
Standard:API 5D
Application:For well drilling

Sizes: Out Diameter: 1.315"- 20", Wall Thickness: 0.133"-0.500"

Standard:GB9948-1988
Application:For manufacturing of furnace tubes, heat exchangers and pipelines in refineries


Chemical Composition and Mechanical Properties

Standard

Grade

Chemical Components (%)

Mechanical Properties

c

Si

Mn

P

S

Mo

Cr

V

Tensile STrength(Mpa)

Yield STrength(Mpa)

Elongation

(%)

ASTM A53

A

≤0.25

/

≤0.95

≤0.05

≤0.06

≤0.15

≤0.40

≤0.08

≥330

≥205

≥29.5

B

≤0.30

/

≤1.2

≤0.05

≤0.06

≤0.15

≤0.40

≤0.08

≥415

≥240

≥29.5


Standard

Grade

Chemical Components(%)

Mechanical Properties

c

Si

Mn

P

S

Mo

Cr

V

Tensile STrength

(Mpa)

Yield STrength

(Mpa)

 Elongation(%)

ASTM A106

A

≤0.30

≥0.10

0.29-1.06

≤0.035

≤0.035

≤0.15

≤0.40

≤0.08

≥415

≥240

≥30

B

≤0.35

≥0.10

0.29-1.06

≤0.035

≤0.035

≤0.15

≤0.40

≤0.08

≥485

≥275

≥30


Standard

Grade

Chemical Components(%)

Mechanical Properties

c

Si

Mn

P

S

Tensile STrength(Mpa)

Yield STrength(Mpa)

Elongation(%)

ASTM A179

A179

0.06-0.18

/

0.27-0.63

≤0.035

≤0.035

≥325

≥180

≥35



Standard

Grade

Chemical Components(%)

Mechanical Properties

c

Si

Mn

P

S

Tensile STrength(Mpa)

Yield STrength(Mpa)

Elongation(%)

ASTM A192

A192

0.06-0.18

≤0.25

0.27-0.63

≤0.035

≤0.035

≥325

≥180

≥35


Standard

Grade

Chemical Components

Tensile STrength(min)

Yield Strength(min)

C

Mn

P

S

Mpa

Mpa

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

414

X65

0.28

1.40

0.030

0.030

531

448

X70

0.28

1.40

0.030

0.030

565

483


Standard

Grade

Chemical Components

Tensile STrength(min)

Yield Strength(min)

C

Mn

P

S

Mpa

Mpa

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

Hot Rolled

Cold Drawn

At present, Hunan Great Steel Pipe Co.,Ltd owns 3 sets of hot -rolled seamless steel pipe production line and 2 sets of hot-expanded seamless steel pipe production line with annual production capacity of 200,000 tons, the size range is from 73mm to 630mm. Its physical and chemical labs cab conduct various physical and chemical tests and experiments for steel pipes, and are equipped with eddy current flaw detectors, leakage fault detection and ultrasonic crack detectors etc. For high, medium and low pressure seamless steel pipes and petroleum casing pipes with a full range of inspection measures, capable to meet various standard test and inspection requirements for steel pipes.

◎ No.1 Production Line: 
OD (68-168mm)
◎ No.2 Production Line: φ100 Plugs Mills
OD (89-133mm)
◎ No.3 Production Line: φ273 Accu-Roll Mills
OD (140-340mm)


If you have any inquiries and problems, please contact Hunan Great Steel Pipe Co.,ltd at any time. Thanks in advance. Welcome! Email:info@great-pipe.com