Pipa mulus duwe bagean kothong bunder lan ora ana jahitan las ing pinggiran.Pipa baja digunakake minangka pipa kanggo ngeterake cairan, kayata lenga, gas alam, gas, lan banyu.
Win Road International nyedhiyakake pipa mulus yaiku pipa baja karbon rendah, ngetutake standar API 5L/ASTM A53/ASTM A106 Gr.B
Produk kasedhiya selaras miturut kabutuhan customer.