Q235 Construction Welded Steel Pipe / Round Hollow Section Tube ASTM A53

Outer Diameter/O.D/mm

21-340

Wall Thickness/W.T/mm

1.0-16

Section Shape

Round

Standard

ASTM A53, API5L GR.B, DIN2440,GB,BS3604,DIN EN10219

Grade

Q195-Q345/S235/S275/S355/16Mn/20#/45#,/20MN2/SS41/A36/A35/ST37/ST35

Special Pipe

Thick Wall Pipe

Big Outer Diameter

Type

Welded

Welded Line Type

Longitudinal 

Alloy Or Not

Non-alloy

Secondary Or Not

Non-secondary

Product

Q195 , Q235 , Q345B , Erw Welded Steel Pipe / Hot Rolled Tubing for Construction / Automobile

O.D/mm

21-33

33-60

60-89

89-114

114-140

140-165

165-219

219-273

273-325

325-340

W.T/mm

1.0-3.5

1.0-4.0

1.2-4.0

1.4-4.5

1.6-4.8

2.0-5.0

2.5-6.0

2.75-8.5

3.0-15.0

3.0-16.0

Length/m

5.8-11.8 or According Customers’ Requirements

End Treatment

Plain/Beveled/Thread with Sockets/Flange/Coupling and Plastic

Material

Q195,Q195L,Q235,Q345B,ST37, ST35, A36, A53,SS41

Surface 

Treatment

Varnish painted on pipe (black painting), anti-corrosion oil and insulation treatment,

 galvanized or painting as customer's request.