... inches, 30 inches. 2.But according to need to customize. 1.In addition to 32 inch interface and 20 inches, 24 inches, 30 ... selection and mn2 has high strength, good toughness, easy to welding and other characteristics, widely used in petroleum pipeline connection ... treatment, inspection, finishing. 4.Customers can according to their own needs to take over for further processing, can also provide ...