Electric resistance welded (ERW)steel pipes
Electrical resistance welded steel pipes(ERW steel pipes) are manufactured by cold forming of steel coil into a round cylindrical shape are used in various engineering purposes.
ASTM A53 Grade B ERW Steel Pipes
Specifications of electrical resistance welded steel pipes(ERW steel pipes):
| Outside Diameter | 21.3mm-610mm |
| Wall thickness | 3.5mm-25mm |
| Length | 3m-20m |
| Standard | ASTM A53,API 5L,DIN 2458,EN 10217,GB/T3091,GB/T9711,etc. |
| Grade | ASTM A53 Gr B API 5L Gr B,X42,X52,X56,X60,X65,X70 EN: S275, S275JR, S355JRH, S355J2H GB: Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360-L555 |
| Package | bags,bundles,losses containers or client option. |
Electrical resistance welded steel pipes(ERW steel pipes) manufacturing process:
Uncoiling->Smoothing->End cutting->End shearing welding->Super coil accumulator->Edge conditioning->Strip edge and body ultrasonic testing->Forming->H.F welder(Electric resistance welding)->Ultrasonic testing for weld seam->Post annealing(normalizing)->Air cooling(water cooling)->Sizing->Flying shear->Flush-out->Cropping->Flattening testing->Straightening->End facing->Hydraulic testing->Ultrasonic detection->Ultrasonic testing for pipe end->Visual and dimensional inspection->Weighing and measuring->Super coil accumulator->Coating->Pipe end protector->Banding->Shipping
Electric resistance welded steel pipe ERW steel pipe manufacture process
Haihao Group manufacture seamless steel pipes,welded steel pipes(ERW,LSAW,SSAW pipes),steel casing and tubing pipes more than 30 years,we produce the pipe products in different standards such as ASTM A106,ASTM A53,ASTM A312,ASTM A333,ASTM A335,ASTM A315,API 5L,API 5CT,EN 10217,JIS G3444,etc.We also can supply butt welding pipe fittings,forged steel pipes and forged flanges,the materials contain carbon steel,stainless steel,alloy steel,if you want to know more about our piping products,please email us:sales@haihaogroup.com