The main steel grades include 304£¬304L£¬321£¬316£¬316L£¬347H£¬317L£¬310S£¬904L, etc., the specification of Stainless Steel Seamless Pipe/Tube have OD 6-630mm, WT 1-30mm, length 4-16M. the special specifications can be supplied under the negotiation of both parties.