... .3 4.SGS inspection 5.Mill supply 1.Commodity NameSpiral steel pipe2.StandardSY/T5037,SY/T5040,ASTMA252,EN10217,EN10219,GB/T9711 ... gas , water and gas, mineral slurry. Also for chemical industry, building structure and pile driving, etc.12. Export to theseCountriesCanada, USA, Peru ... 5L PSL1,PSL2 , API 5CT, ISO ,CE ASTM A252 SSAW Steel Pipe Pile