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Carbon steel pipe,Seamless Steel Pipe, Seamless Stainless Steel Pipe, Steel Piping
OD:13.72-914mm / WT: 1.65-40mm, Length: 0.5mtr-20mtr
ASTM A106,ASTM A179/A192,ASTM A333,GR.6,ASTM A335,GR.P5,P9,P11-P91,ASME SA179/SA192,Grade A/B/C,API 5L PSL1/PSL2,X42-X80,DIN1629 ST37，ST44，ST52
For conveying gas, water and oil either in the oil or natural gas industries
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▇ ▍ Description of Seamless Steel Pipe
Seamless steel pipes are perforated from whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and top pipes. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and special-shaped. Special-shaped pipes include square, oval, triangular, hexagonal, melon seed, star, and finned pipes. The maximum diameter is 900mm and the minimum diameter is 4mm. According to different purposes, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Normally, seamless pipes can withstand 20% higher working pressure than welded pipes of the same material grade and size.
▇ ▍ 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% | ||
▇ ▍ Tube For Structural Purposes
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
▇ ▍ Boiler Pipe
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.
▇ ▍ Seamless Steel Tubes for Liquid Service
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
▇ ▍ Line Pipe
Sizes: Out Diameter: 73-630mm, Wall Thickness: 6-35mm
Standard: API 5L
Application: For gas, water, transportation in Petroleum and natural gas industries
▇ ▍ Drill Pipe
Sizes: Out Diameter: 2-7/8""-6-5/8"", Wall Thickness: up to 0.813""
Standard: API 5D
Application: For well drilling
▇ ▍ Petroleum Cracking Tube
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 | |
tandard | Grade | Chemical Components(%) | Mechanical Properties | |||||||||
c | Si | Mn | P | S | Mo | Cr | V | Tensile STrength | Yield STrength | 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 5LPSL1 | 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 | 414 | |
X65 | 0.28 | 1.4 | 0.03 | 0.03 | 531 | 448 | |
X70 | 0.28 | 1.4 | 0.03 | 0.03 | 565 | 483 | |
Standard | Grade | Chemical Components | Tensile STrength(min) | Yield Strength(min) | |||
C | Mn | P | S | Mpa | Mpa | ||
API 5L PSL2 | B | 0.24 | 1.2 | 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 | |
▇ ▍ Dimension of Seamless Steel Pipe
▇ ▍ Equipment
"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)"
▇ ▍Process of Seamless Steel Pipe
▇ ▍ Hot Rolled
▇ ▍Cold Rolled
▇ ▍ Description of Seamless Steel Pipe
Seamless steel pipes are perforated from whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and top pipes. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and special-shaped. Special-shaped pipes include square, oval, triangular, hexagonal, melon seed, star, and finned pipes. The maximum diameter is 900mm and the minimum diameter is 4mm. According to different purposes, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Normally, seamless pipes can withstand 20% higher working pressure than welded pipes of the same material grade and size.
▇ ▍ 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% | ||
▇ ▍ Tube For Structural Purposes
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
▇ ▍ Boiler Pipe
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.
▇ ▍ Seamless Steel Tubes for Liquid Service
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
▇ ▍ Line Pipe
Sizes: Out Diameter: 73-630mm, Wall Thickness: 6-35mm
Standard: API 5L
Application: For gas, water, transportation in Petroleum and natural gas industries
▇ ▍ Drill Pipe
Sizes: Out Diameter: 2-7/8""-6-5/8"", Wall Thickness: up to 0.813""
Standard: API 5D
Application: For well drilling
▇ ▍ Petroleum Cracking Tube
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 | |
tandard | Grade | Chemical Components(%) | Mechanical Properties | |||||||||
c | Si | Mn | P | S | Mo | Cr | V | Tensile STrength | Yield STrength | 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 5LPSL1 | 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 | 414 | |
X65 | 0.28 | 1.4 | 0.03 | 0.03 | 531 | 448 | |
X70 | 0.28 | 1.4 | 0.03 | 0.03 | 565 | 483 | |
Standard | Grade | Chemical Components | Tensile STrength(min) | Yield Strength(min) | |||
C | Mn | P | S | Mpa | Mpa | ||
API 5L PSL2 | B | 0.24 | 1.2 | 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 | |
▇ ▍ Dimension of Seamless Steel Pipe
▇ ▍ Equipment
"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)"
▇ ▍Process of Seamless Steel Pipe
▇ ▍ Hot Rolled
▇ ▍Cold Rolled
