Steel Pipe Specifications

  Steel pipe specifications involve multiple aspects, including dimensions, material, standards, and delivery length.

 Dimensions: Steel pipe dimensions can be expressed in various ways, including imperial and metric systems For example, DN15 (4/8 inch pipe), DN20 (6/8 inch pipe), DN25 (1/2 inch pipe), etc., as well as the imperial sizes 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8, etc. Smaller sizes are represented by 1/16, 1/32, 1/64, and the unit is still inches.

  Materials: Steel pipes come in a variety of types, including plastic pipes (such as PVC, PPR), metal pipes (such as galvanized pipes, stainless steel pipes, copper pipes, etc.)

 Standards: Different types of steel pipes have different standards, such as GB/T3091-2015 "Welded Steel Pipes for Low-Pressure Fluid Transport," GB/T8163-2018 "Seamless Steel Pipes for Fluid Transport," and GB/T3087-2022 "Seamless Steel Pipes for Low and Medium Pressure Boilers," etc

  Delivery Length: There are various specifications for the delivery length of steel pipes, including standard length (non-fixed length), fixed length, multiple length, and range length.

  Other specifications: Steel pipe specifications also include indicators such as wall thickness, ovality, and bendability. For example, the outer diameter range of seamless steel pipes for low and medium pressure boilers according to GB/T3087-2022 is between Φ16mm and Φ720mm, and the wall thickness range is between 2.0mm and 100mm.