... cold-drawn low-carbon steel heat-exchanger ASTM A192 specification for seamless carbon steel boiler tubes for high-pressure ... :API 5L,API5CT,ASTM A106,ANSI,ISO9001,DIN,EN,JIS. 1. Specification: SM400A, SM400B, SM490A, SM490B, SM520B, SM520C 2. ... Standard: JIS 3. Product: Welding strcutural steel plate 4. Application: Structural ...