1.Base pipe (OD):10-356mm

 2.Base pipe (WT):2-25.4mm

 3.Fin height (H):5-30mm

 4.Fin TK (TK):2-10mm

 5.Fin (thread pitch):4-30mm

 6.Fin pipe (length):1-12m

• Material:carbon steel ,stainless steel,alloy steel,aluminum material
• Type:seamless&welded