Square/Rectangular Tube(Hollow Section)
Usage: Conveying gas, water and petroleum for oil and natural gas industries; using as the structural steel pipe.Main steel
grade: A, B, X42,X46,X52,X56,X60,X65,X70,J55,K55,N80-1,N80Q,M65,L80-1,C90-1,C90-2,C95,T95-1,T95-2,P110,9711,9712
Standard: API 5L, API 5CT, ASTM A53, ASTM A500, GB9711.1, GB9711.2
