Seamless steel pipe is a steel pipe made by perforating steel billets and is widely used in various industrial fields.
Carbon steel: Commonly used ones are ASTM A53, A106, API 5L, A335, etc.
ASTM A53: Seamless and welded steel pipes for general use and mechanical pressure applications.
ASTM A106: Seamless carbon steel pipes for high temperature use.
API 5L: Suitable for oil and gas transmission pipelines.
Alloy steel: Commonly used ones are ASTM A335, A213, etc.
ASTM A335: Seamless iron alloy steel pipes for high temperature use, including steel grades such as P5, P9, P11, P22, P91, etc.
ASTM A213: Seamless iron alloy steel pipes for boilers, superheaters and heat exchangers.
Stainless steel: Commonly used ones are ASTM A312, A213, etc.
ASTM A312: Seamless and welded austenitic stainless steel pipes for high temperature and corrosion-resistant applications.
ASTM A213: Seamless iron alloy stainless steel pipes for boilers, superheaters and heat exchangers.
Standards
ASTM (American Society for Testing and Materials): Provides standard specifications for seamless steel pipes, such as ASTM A53, A106, A335, etc.
API (American Petroleum Institute): Provides standards for seamless steel pipes for the oil and gas industry, such as API 5L.
EN (European Standard): Such as EN 10216-2, EN 10216-5, etc., suitable for seamless steel pipes for pressure and high temperature purposes.
JIS (Japanese Industrial Standard): Such as JIS G3454, JIS G3455, suitable for seamless steel pipes for high pressure and mechanical structure purposes.
Applications
Oil and gas industry: Mainly used for the extraction and transportation of oil and gas. API 5L standard seamless steel pipe is a common choice in this industry.
Boilers and heat exchangers: Used to manufacture boilers, heat exchangers and superheaters. Commonly used steel grades are ASTM A213, A335.
Mechanical manufacturing: used to manufacture mechanical parts, bearings, cylinders, etc. Common steel grades include ASTM A53, A106.
Structural applications: used for structural applications such as buildings and bridges. Common steel grades include EN 10210, EN 10297.
Chemical equipment: used to manufacture corrosion-resistant and high-temperature chemical equipment. Common stainless steel grades include ASTM A312.
Seamless steel pipes are widely used in industrial fields with high requirements due to their high strength, good pressure resistance, and seamlessness, ensuring the safety and reliability of the system.
