... protecting caps as percustomer's requirements;with FBE internal coating for water steel pipes.10.MaterialA53(A,B),A106(B,C ... X42,X46,X52,X56,X60,X65,X70, etc11.Usagefor petroleum/ natural gas pipeline , for conveying water,drainage,coal gas, mineral slurry and ... other low-middle pressure liquids. Also for chemical industry, building structure,heat-supply and pile driving projects ...