NEWS AND EVENTS

1.ERW black round pipe (ASTM A53,GB..)2.Weld black square/rectangular pipe(ASTM A500,GB,...)3.Hot dip galvanized round pipe (BS 1387,ASTM A53,GB ,...)4.Hot dip galvanized square/rectangular pipe(ASTM A500,GB...)5.Pre-galvanized square/rectangular/round pipe,cold rolled black annealed or bright finis

All items of our products and related tests as follow : 1.ERW black round pipe (ASTM A53,GB..)2.Weld black square/rectangular pipe(ASTM A500,GB,...)3.Hot dip galvanized round pipe (BS 1387,ASTM A53,GB ,...)4.Hot dip galvanized square/rectangular pipe(ASTM A500,GB...)5.Pre-galvanized square/rectangul

Hot rolled square and rectangular tubeMaterial are hot rolled steel coils.Hot rolled steel strips.Q195 Q235 Q355 are main material of square tubes.Q195 = S195 / A53 Gr. AQ235 = S235 / A53 Grade B / A500 Gr. A / STK400 / SS400 / ST42.2Q355 = S355JR / A500 Grade B Grade CThe standard ASTM A500,Grade A

Hot rolled square and rectangular tubeMaterial are hot rolled steel coils.Hot rolled steel strips.Q195 Q235 Q355 are main material of square tubes.Q195 = S195 / A53 Gr. AQ235 = S235 / A53 Grade B / A500 Gr. A / STK400 / SS400 / ST42.2Q355 = S355JR / A500 Grade B Grade CThe standard ASTM A500,Grade A

SpecificationOD21.3mm-406.4mmWT1.2-20mmLength1-12mZinc coat200-600g/m²20-83μm0.13-2oz/ft²TechniquePre-galvanized / Hot-dipped galvanized / Hang-planting galvanizationSteel gradesQ195, Q235A-B, Q345A-E, 20#, 10#,16Mn, ASTM A36,ASTM A500, ASTM A53, ASTM 106, SS400, St37, St52, S235JR, S355TRH ect.St