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Home > Steel Pipe > Seamless Steel Pipe
Seamless steel pipe
Seamless steel pipe Seamless steel pipe Seamless steel pipe
  • Seamless steel pipe

Seamless steel pipe

Carbon seamless steel pipe is a kind 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
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Description Dimensions & Sizes Production & Testing FAQS
Description

Carbon Seamless Steel Pipe
Carbon Seamless steel pipe Supply condition  

Diameter : 10.3-914.4mm（1/8 - 36inch）
Wall Thickness: 0.049 inch – 2.5 inch (1.24mm– 63.5mm)  SCH:SCH10,SCH20,STD,SCH40,SCH60,XS,SCH80,SCH100,SCH120,SCH160,XXS
Length:Random Length, Fixed Length, SRL, DRL
Pipe End :Square Ends, Beveled End
Standard & Steel Grade:API 5L PSL1/ PSL2：A,B,X42-X100  ; ASTM A106/A53 : GRADE A ,B,C,  ; A333：GRADE 1-8 ; A335：P1-P92 EN 10210/10219/10216：S235-S460 , P195GH-16MO3 ;DIN 1629/17175 JIS G3454/3455/3456
Surface: 3PE Coating , 3PP Coating , FBE Coating ,Epoxy Coating , Special Painting, Vanish Coating, Bitumen Coating, Black Oil Coating As Per Customer’s Requirement
Test: Chemical Analysis, Mechanical Test, Visusal Inspection , Tension Test, Dimension Check, Bend Test , Flattenting Test, Impact Test, DWT Test, NDT Test, Hydrostatic Test, Hardness Test
Sour Service : NACE MR0175/ISO 15156
Mill Test Certificate: EN 10204/3.1B 

Standard and Grade of Carbon Seamless steel pipe
Standard Grade / Material  Specifaction
API Spec 5CT J55, K55, N80, L80,C90, C95, T95, P110, M65 Spectification for Casing and Tubing
API Spec 5L PSL1 / PSL2 A,B X42, X46, X52, X56, X60, X65,. X70 Specification for Line Pipe
ASTM A53 A, B Black and Hot-Dipped Zinc-Coated Steel Pipes Welded and Seamless
ASTM A106 A, B Seamless Carbon Steel for High Temperature Service
ASTM A179 Low Carbon Steel Seamless Cold-Drawn Low-Carbon Steel Heat Exchanger and Condenser Tubes
ASTM A192 Low Carbon Steel Seamless Carbon Steel Boiler Tubes for High Pressure
ASTM A210 A1, C Seamless Medium-Carbon and Alloy Steel Boiler and Superheater Tubes
ASTM A213 T5, T11, T12, T22 Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-Exchanger Tubes
TP 347H
ASTM A312 TP304/304L, TP316/316L Seamless Steel Pipe for Stainless Materials
ASTM A333 Gr.6 Seamless and Welded Steel Pipe for Low-Temperature Service 
ASTM A335 P9, P11, P22 Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A519 41,304,140 Seamless Carbon and Alloy Steel for Mechanical Tubing
ASTM A789 Seamless Ferritic/Austenitic Stainless Steel Tubing for General Service
DN 17175/EN10216-2 ST35, ST45, ST52, 13CrMo44 Seamless Steel Tube for Elevated Temperature
DIN 2391/EN10305-1 St35, St45, St52 Cold Drawn Seamless Precision Pipe
DIN 1629/EN10216-1 St37, St45, St52 Seamless Circular unalloyed Steel Tubes Subject to Special Requirments
 

Chemical Analysis and Mechanical Properties of Carbon Seamless steel pipe
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 - 0.9 0.03 0.03 ≥331 ≥207
B 0.28 - 1.2 0.03 0.03 ≥414 ≥241
X42 0.28 - 1.3 0.03 0.03 ≥414 ≥290
X46 0.28 - 1.4 0.03 0.03 ≥434 ≥317
X52 0.28 - 1.4 0.03 0.03 ≥455 ≥359
X56 0.28 - 1.4 0.03 0.03 ≥490 ≥386
X60 0.28 - 1.4 0.03 0.03 ≥517 ≥448
X65 0.28 - 1.4 0.03 0.03 ≥531 ≥448
X70 0.28 - 1.4 0.03 0.03 ≥565 ≥483
API 5L PSL2 B 0.24 - 1.2 0.025 0.015 ≥414 ≥241
X42 0.24 - 1.3 0.025 0.015 ≥414 ≥290
X46 0.24 - 1.4 0.025 0.015 ≥434 ≥317
X52 0.24 - 1.4 0.025 0.015 ≥455 ≥359
X56 0.24 - 1.4 0.025 0.015 ≥490 ≥386
X60 0.24 - 1.4 0.025 0.015 ≥517 ≥414
X65 0.24 - 1.4 0.025 0.015 ≥531 ≥448
X70 0.24 - 1.4 0.025 0.015 ≥565 ≥483
X80 0.24 - 1.4 0.025 0.015 ≥621 ≥552


Tolerance of Outside Diameter and Wall Thickness 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%


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



Dimensions & Sizes
Dimensions & Sizes of Carbon Seamless steel pipe
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




Production & Testing
Carbon Seamless steel pipe Manufacturing Process
Hot Rolling Seamless Steel Line Pipe Manufacturing / Production processes
Rolled Round Billets – Examination – Cut Off – Heating – Piercing – Elongation – Slight Tension Reducing – Straightening – Corp End Cutting Off – Visual Inspection – NDT – Hydrostatic Test – Ends Procession – Product Inspection – Painting and Marking – Packing – Warehousing


 
Cold Drawn (Rolled) seamless steel pipe manufacturing process
Mother pipe (Normally for hot rolled pipe) – Inspection – Annealing – Ends Treatment (Hitting and Drilling hole) – Pickling – Grinding – Phosphorization (Annoit) – Cold Drawn (Rolled) – Degreasing and Cleaning – Heat treatment (Solution treatment) – Straightening – Hydrostatic test – Painting and Marking – Warehousing





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