Structural seamless pipe ASTM A213 A335 A519
ASTM A213 alloy steel pipe is a special steel pipe used for high-temperature and high-pressure steam pipes, also known as boiler pipes. Usually made of carbon steel or alloy steel, it has excellent high temperature resistance, corrosion resistance and pressure resistance, and is widely used in petroleum, chemical industry, electric power, construction and other fields.
A335 alloy seamless steel pipe is a pipe material widely used in petroleum, chemical industry, electric power and other fields. The tensile capacity and yield capacity of A335 steel pipe are as follows
tensile strength . The tensile strength of P1, P2, P12, P23, P91, P92, P911, and P122 is 380MPa, and the tensile strength is 410MPa.
Yield Strength. The yield strength of P1, P2, P12, P23, P91, P92, P911, P122, etc. is ≥240Mpa, and the yield strength is ≥205Mpa.
A519 alloy steel pipe is an American standard seamless steel pipe, mainly used in machinery manufacturing, chemical equipment, painting, beveling, laser drilling and other fields. It includes 1010, 1020, 1026, 4130, 4140 and other materials.
| Executive Standard | Dimension (mm) | Steel Code / Steel Grade |
| ASTM A213 | Ø10.3~426 x WT1.0~36 | T5, T9, T11, T12, T22, T91 |
| ASTM A335 | Ø1/4″~42″ x WT2~120mm | P5, P9, P11, P12, P22, P91, P92 |
| ASTM A519 | Ø16″~42″ x WT10~100mm | 4130, 4130X, 4140 |
Seamless Carbon alloy Steel Pipe

Standard: ASTM A213, ASTM A335, ASTM A519 Pipes
Form: Round, Square, Rectangular, Hydraulic, Etc
Application: Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater, and Heat-Exchanger Tubes
Size: OD4~426mm x WT0.5~50mm x Length max 12000mm
Gnee Steel Company is a professional steel company integrating R&D, manufacturing, sales and service. With annual sales of nearly US$1 billion and annual export volume of more than 50,000 tons, it is a steel mill located in Anyang City, Henan Province with convenient transportation. The factory covers an area of about 35,000 square meters, the company has more than 200 employees, and exports to 150 countries every year.
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