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Seamless carbon steel pipe/SMLS 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 semi-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
Standard 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 carbonalloy and austenitic stainless steel tubes with specified elevated temperature properties
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%