Understand The Specifications And Quality Of Stainless Steel Se

• Posted by Yin Tuo June 1, 2021 - Filed in Other - #stainless steel seamless pipe  - 1,069 views

  There are many seamless pipes around us, and Stainless Steel Seamless Pipe is one of them. Today we will talk about the specifications and appearance quality of Stainless Steel Seamless Pipe.

  According to the provisions of GB14975-2002 "Stainless Steel Seamless Steel Tubes", steel pipes usually have a length (indefinite length) of hot-rolled steel pipes of 1.5-10m, and hot-extruded steel pipes are equal to and greater than 1m. For cold-drawn (rolled) steel pipes with a wall thickness of 0.5-1.0mm, 1.0-7m; for those with a wall thickness greater than 1.0mm, 1.5-8m.

  There are 45 kinds of hot-rolled (hot-extruded) steel pipes with a diameter of 54-480mm; a total of 36 kids with a wall thickness of 4.5-45mm. There are 65 kinds of cold-drawn (rolled) steel pipes with a diameter of 6～200mm, and 39 kids with a wall thickness of 0.5～21mm.

  The inner and outer surfaces of the steel pipe shall not have cracks, folds, cracks, cracks, rolling, delamination and scarring defects. These defects shall be completely removed (except for pipes for mechanical processing). After removal, the wall thickness and outer diameter shall not exceed Negative deviation. Other minor surface defects that do not exceed the allowable negative deviation may not be removed.

  Straights allow depth. Hot-rolled and hot-extruded steel pipes with a diameter less than or equal to 140mm are not greater than 5% of the nominal wall thickness, and the maximum depth is not greater than 0.5mm; cold drawn (rolled) steel pipes are not greater than 4% of the nominal wall thickness, and the maximum depth is not greater than 0.3 mm.

  Both ends of the steel pipe should be cut at right angles and burrs should be removed.