Hot-rolled seamless tubes for mechanical applications
Standard:
EN10210/10297
ASTM A519
Uses:
for mechanical applications
Petroleum cracking pipe
Standard
European standards
And the American Society for Testing and Materials Standards
Use
For machining large diameter seamless steel pipe
High pressure chemical pipe
Standard
China National Standard
Use
Equipment used in the manufacture of fertilizers and high pressure seamless steel pipes.
OCTG
Standard:
API SPEC 5CT
Uses :
Tubing is used to extracting petroleum and natural gas from a well
Casing serves as walls of a well
Pipe&tube for ship
Classification of ships:
DNV、LR、BV、CCS、KR、NK
Standard:
GB/T5312—china national standard
Uses:
for manufacture of boiler,superheaters,and pressure system pipelines