What are the commonly used ASTM WROUGHT IRON FITTINGS ?
Answer:
I. Carbon Steel :- ASTM A234Gr.WPA/B, ASTM A420 Gr.WPL6(used for low temp)
II. Alloy Steel :- ASTM A234 WP1/WP5/WP7/WP9/WP11/WP12/WP22.
III. Stainless Steel :- ASTM A403 WP304/WP304L/WP304H/WP309/WP310/WP316/WP316L/WP316H/ WP317/WP321/WP321H/WP347/WP347H/WP348.