The raw material steel pipe adopts high♥↑•-end pickling

and phosphating seamless steel p <≥ipe,

Well known brand welding ₽✘machine for welding,

Advanced production technolo®$gy is adopted

in the steel pipe production ε∞process,

And secondary picklinαβg

and phosphating were"₽← carried out,

Ensure that the cleanliness

of the steel pipe meets the stan←÷dard.