Product Name: Square metal Bellows Corrugated Expansion Joint Model NO.: DN300-2500 Connection: Welding Material: Stainless Steel Trademark: XQ Transport Package: Wooden Case Specification: DN300-2500 Origin: China HS Code: 7307 Product Description The shape of metallic compensator can be circular, rectangular and bellow-form. There are 98 specifications(300×400~6000×5000) of rectangular metallic compensator by their different DN, and the rectangular metal compensators has many types such as single-wave metallic compensator, double-wave metallic compensator, three-wave metallic compensator, etc. (each type has 98 specifications).