Infrastructure
Circular hollow sections (CHS), square hollow sections (SHS), and rectangular hollow sections (RHS) have high strength and strong earthquake resistance. They are often used in columns, beams, and columns of building structures such as tunnels, airports, bridges, and platforms. They can withstand enormous loads and are indispensable for buildings with large spans and spaces.
The primary standards and materials are:
EN 10219-1 S235JRH, S275J0H/J2H, S355J0H/J2H
EN 10210-1 S235JRH, S275J0H/J2H, S355J0H/J2H
ASTM A500 Grade A/B/C/D
ASTM A501 Grade A/B
JIS G3444 STK400, STK490
JIS G3466 STKR400, STKR490
Oil and Gas
Line pipes, tubing, casing, drill pipes, etc., have high strength, good anti-collapse performance, low-temperature resistance, high-pressure resistance, corrosion resistance, cold resistance, etc., and are essential materials for land and offshore oil and gas exploration and transportation industries.
The standards and materials of pipelines used for oil and natural gas transportation are:
API 5L 46th Edition PSL 1/PSL 2 Grade B/X42/X46/X52/X56/X60/X65/X70/X80/X90/X100/X120
ISO 3183 PSL 1/PSL 2 Grade L245/L290/L320/L360/L390/L415/L450/L485/L555/L625/L690/L830
The standards and materials of oil casing used in oil and gas wells are:
API 5CT 10th Edition Grade H40/J55/K55/N80/N80-1/N80Q/L80-1/L80-9Cr/L80-13Cr/C90/T95/P110/Q125
Drill pipe standards and materials used for oil and gas wells are:
API 5DP E75, X95, G105, S135
Chemical Processing
Seamless steel pipes are resistant to corrosion, high temperature and high pressure. They are used to transport various chemical media such as acids, alkalis and salts. They are also commonly used to manufacture boilers, heat exchangers, condensers, reactors, distillation towers, and other equipment in refineries and chemical plants.
Primary standards and materials:
ASTM/ASME A179/SA179
ASTM/ASME A192/SA192
ASTM/ASME A210/SA210 A1/C
ASTM/ASME A213/SA213 T5/T9/T11/T22/T91/T92
ASTM/ASME A334/SA334 Gr.1/3/6
ASTM/ASME A335/SA335 P5/P9/P11/P12/P22/P91/P92
EN 10216-2 P195GH, P235GH, P265GH, 16Mo3, 13CrMo4-5, 10CrMo9-10, X11CrMo5, X10CrMoVNb9-1, X20CrMoV11-1 TC1/TC2
Power Generation
Seamless steel pipes are widely used in power and process pipelines of thermal power plants, including high-pressure boiler tubes, supercritical or ultra-supercritical high-pressure boiler tubes, air preheater tubes, superheater tubes, economizer tubes; welded steel pipes and seamless steel pipes are also used for pipes for onshore and offshore wind turbine blade support structures, etc.
Main standards and materials:
ASTM/ASME A179/SA179
ASTM/ASME A192/SA192,
ASTM/ASME A210/SA210 A1/C
ASTM/ASME A213/SA213 T5/T9/T11/T22/T91/T92
ASTM/ASME A334/SA334 Gr.1/3/6
ASTM/ASME A335/SA335 P5/P9/P11/P12/P22/P91/P92
ASTM/ASME A312/SA312 TP304/TP304L/H, TP310S, TP316/TP316L/H, TP321/TP321H, TP347/TP347H/HFG, TP348/TP348H
ASTM/ASME A213/SA213 TP304/TP304L/H, TP310S, TP316/TP316L/H, TP321/TP321H, TP347/TP347H/HFG, TP348/TP348H
ASTM/ASME A249/SA249 TP304/TP304L, TP310S, TP316/TP316L, TP321
ASTM/ASME A269/SA269 TP304/TP304L, TP310S, TP316/TP316L, TP321
EN 10216-2 P195GH, P235GH, P265GH, 16Mo3, 13CrMo4-5, 10CrMo9-10, X11CrMo5, X10CrMoVNb9-1, X20CrMoV11-1 TC1/TC2
EN 10210-1 S355J0H, S355J2H
Automobile and Machinery
Seamless steel pipes are widely used in the manufacture of automobile half-axle sleeves and drive axle housing shaft tubes, crane boom tubes, hydraulic cylinders, oil cylinders and pistons, hydraulic support tubes, pump bodies and accessories, rollers, conveyor rollers, rolling bearing inner and outer sleeves, high-pressure vessels, etc. due to their high strength and good safety.
The primary standards and materials are:
EN 10305-1/4 E235, E355
EN 10294-1 E355, E470
EN 10297-1 E235, E355, E470, C45E, 41Cr4, 25CrMo4, 30CrMo4, 34CrMo4, 42CrMo4
ASTM A519 SAE/AISI 1020, 1045, 1524, 4130, 4135, 4140, 4145
Water Treatment
Seamless steel pipes are used in the piping systems of water, sewage treatment plants, and waste incineration plants, as well as in the manufacture of structural parts for environmental protection equipment such as desulfurization towers and dust collectors.
The main standards and materials are:
API 5L/ASTM A53/A106 Grade B
EN 10219-1/EN 10210-1 S235JRH
ASTM A312 TP304, TP304L, TP316, TP316L, TP321
Shipbuilding
Seamless steel pipes’ excellent air tightness and pressure-bearing properties make them widely used in hull structures, oil and gas pipelines of tankers, and engine cooling systems.
The main standards and materials are ABS/DNV/GL/BV/CCS/Lloyd’s Register certified:
ASTM/ASME A179/SA179
ASTM/ASME A192/SA192,
ASTM/ASME A210/SA210 A1/C
ASTM/ASME A213/SA213 T5/T9/T11/T22/T91/T92
ASTM/ASME A334/SA334 Gr.1/3/6
ASTM/ASME A335/SA335 P5/P9/P11/P12/P22/P91/P92
ASTM/ASME A312/SA312 TP304/TP304L/H, TP310S, TP316/TP316L/H, TP321/TP321H, TP347/TP347H/HFG, TP348/TP348H
ASTM/ASME A213/SA213 TP304/TP304L/H, TP310S, TP316/TP316L/H, TP321/TP321H, TP347/TP347H/HFG, TP348/TP348H
ASTM/ASME A249/SA249 TP304/TP304L, TP310S, TP316/TP316L, TP321
ASTM/ASME A269/SA269 TP304/TP304L, TP310S, TP316/TP316L, TP321
EN 10216-2 P195GH, P235GH, P265GH, 16Mo3, 13CrMo4-5, 10CrMo9-10, X11CrMo5, X10CrMoVNb9-1, X20CrMoV11-1 TC1/TC2
Marine Engineering
Steel pipes are used for struts, beams, buoys, and other components of offshore drilling rigs and engineering equipment structures.
The primary standards and materials are:
EN 10219-1 S235JRH, S275J0H/J2H, S355J0H/J2H
EN 10210-1 S235JRH, S275J0H/J2H, S355J0H/J2H
ASTM A500 Grade A/B/C/D
ASTM A501 Grade A/B
Industrial Gas Storage
High-strength seamless steel pipes can withstand high pressure and are widely used for storing industrial gases such as hydrogen, oxygen, chlorine, nitrogen, helium, acetylene, methane, propane, and liquefied natural gas.
The primary standards and materials are:
EN 10297-1 34CrMo4, 42CrMo4
JIS G3429 STH 21, STH22
ASTM A519 Gr. 4130, 4140
Defense Industry
Seamless steel tubes are characterized by high strength, creep resistance, high-temperature resistance, impact resistance, and fatigue resistance. They are widely used for ordnance missiles and bomb shells, rockets, gun tubes, tank and missile destroyer gun tubes, and land-based missile launch tubes.
The primary standards and grades are:
ASTM A519 SAE/AISI 1020, 1524, 1527, 4140
EN 10297-1 E235, E355, 42CrMo4, 36CrNiMo4, 30CrNiMo8
32CrMoV12-10, 35NiCrMo16, 300M, 40NiSiCrMo7
