• No.101 Wanbo 1st Road, Nancun Town, Panyu District, Guangzhou, Guangdong, China
  • 0086-020-84886013，84886093，84886091，84886012
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Seamless Steel Pipe

Carbon Seamless Steel Pipe

Type: hot rolled seamless steel pipe (hrs), cold rolled seamless steel pipe (crs), cold drawn seamless steel pipe (cds), general seamless carbon steel pipe.

Application: mainly for the manufacture of water wall pipes, boiling water pipes, superheated steam pipes, superheated steam pipes for locomotive boilers, large and small smoke pipes and arched brick pipes.

Outside Diameter: 1/4" (8mm)-80" (2000mm)

Thickness: 2.11mm-60mm

Length: 3m-12m

Surface: 3pe coating,3pp coating,fbe coating,epoxy coating,special painting

Standard: API 5l, API 5CT, ASTM A53, ASTM A106, ASTM A179, ASTM A192, ASTM A252, ASTM A333, ASTM A335, ASTM A672

Technique: cold rolled/hot rolled/cold drwan.



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Standard

Specification

Carbon steel seamless pipe is stronger and long lasting thanseamless steel pipe because of its higher carbon content. Additionally, since it has a higher tensile strength, it can handle more pressure without becoming too brittle or weak.


It has superior durability and strength compared to welded pipes, making it suitable for various engineering applications, such as those related to the transportation of fluids and high-temperature services. Theseamless carbon steelpipes are available in different sizes and can be customized according to the customer’s needs. This type of pipe makes a great choice for many manufacturing processes due to its corrosion resistance, chemical stability, better formability, low cost, and ease of fabrication.


Carbon steel seamless pipes are commonly used in construction, oil and gas, and other heavy-duty industrial applications. They are ideal for transporting liquids and gases at high temperatures and pressures.


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%

Process

The process begins with solid steel rounds, or billets, being cut to a specified length and sent through a walking-beam reheat furnace, where temperatures reach nearly 2,300°f. After exiting the reheat furnace, the preheated rounds are turned into a tube shell in the rotary piercing mill as the billets are cross-rolled between two barrel-shaped rolls at a high speed. The seamless shells enter mandrel mill, where they are rolled over a retained mandrel to provide the needed od size and wall thickness for the next process. The process is carefully monitored using a state-of-the-art hot-wall measuring system. The shells are then reheated for final forming in a 24-stand stretch-reducing mill, where outside diameters are formed to customers’ exacting specifications. Wall thickness is again verified using a hot-wall measuring system. After being rotated and advanced on the walking-beam cooling bed, the pipes are batch cut and transferred to an in-process storage area, where they are handled by computer-controlled gantry cranes.

Packing

  • OD 219mm and above (Loose) ： Loose + pipe cap + two nylon slings

    OD 219mm and above (Loose) ： Loose + pipe cap + two nylon slings

  • OD below 219mm (Bundled) ：Hexagonal packing + steel belts bundled (3 steel belts at both ends & 2 steel belts in the middle) woven bag under the st

    OD below 219mm (Bundled) ：Hexagonal packing + steel belts bundled (3 steel belts at both ends & 2 steel belts in the middle) woven bag under the st

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  • No.101 Wanbo 1st Road, Nancun Town, Panyu District, Guangzhou, Guangdong, China
  • 0086-020-84886013，84886093，84886091，84886012
  • sales@finegosteel.com
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