Black Steel Pipe Nipples

There are various specifications and sizes of Black Steel Pipe Nipples,and the following are some common situations:

Divided by nominal diameter(DN)

Small caliber:DN25,DN32,DN40,DN50,DN65,DN80,DN100,DN125,DN150,etc.,commonly used in building water supply and heating,small industrial pipelines and other systems.

Medium caliber:DN200,DN250,DN300,DN350,DN400,DN450,DN500,DN600,DN800,etc.,suitable for medium-sized pipeline systems in industrial and municipal engineering.

Large caliber:DN900,DN1000,DN1200,DN1500,DN2000,DN3000,etc.,mainly used in large-scale municipal engineering,sewage treatment plants,large-scale chemical pipelines and other occasions.

Divided by specific types of dimensions

Equal diameter joint:Taking the common ring clamp sealed coated carbon steel pipe fittings as an example,DN15 corresponds to a pipe outer diameter of 18mm and a length of 70±3mm;The outer diameter of the pipe corresponding to DN20 is 22mm,and the length is 79±3mm;The outer diameter of the pipe corresponding to DN25 is 28mm,the length is 80±3mm,and so on.

Reducing joint:Taking the ring clamp sealed coated carbon steel pipe reducing joint as an example,for example,the nominal size is 20×15,the outer diameter of the pipe is 22×18mm,and the length is 81±3mm;The outer diameter of the 25×15 tube is 28×18mm,with a length of 85±3mm,etc.

Equal diameter tee:such as ring clamp sealed coated carbon steel pipe fittings with equal diameter tee,DN15 pipe outer diameter 18mm,length 97±2mm,center height 48.0±2mm;The DN20 pipe has an outer diameter of 22mm,a length of 106±2mm,and a center height of 54.0±2mm.

Reducing tee:Taking the ring clamp sealed coated carbon steel pipe reducing tee as an example,with a nominal size of 20×15,a pipe outer diameter of 22×18mm,a length of 106±2mm,and a center height of 45±2mm;The outer diameter of the 25×15 tube is 28×18mm,the length is 120±2mm,and the center height is 49±2mm.

90°elbow:Taking the ring clamp sealed coated carbon steel pipe fittings as an example,the DN15 pipe has an outer diameter of 18mm,a length of 60.5±3mm,a straight pipe length of 65.5±3mm,and a bending radius of 27mm;The DN20 pipe has an outer diameter of 22mm,a length of 71.0±3mm,a straight pipe length of 77.0±3mm,and a bending radius of 33mm.