self-restrained joint ductile iron pipe

Material: Ductile Iron Type: Welded



DN80 mm - - DN2600 mm

metal water- cooling forming or hot- mold

this joint is for for mountainous region pressure water supply

The theorical weight of K type joint ductile iron pipe for pressure supplyDN mm Wall thickness ( mm ) The approximate weight of socket sectionUnit weight of barrel (kg/ m) The total weight of standard working length L= 6m

10065. 914. 995

15068. 421. 8139

2006. 31130. 1192

2506. 814. 140. 2255

3007. 222. 450. 8327

3507. 727. 263. 2406

4008. 131. 575. 5485

4508. 637. 389. 7576

500942. 8104. 3667

6009. 955. 4137. 3879

70010. 873. 9173. 91117

80011. 790. 2215. 21381

90012. 6115. 6260. 21677

100013. 5146. 6309. 32002

As for there is a little friction between rubber ring and pipe, two pipes will become less crowed when the pressure inside pipe is high or deflection angle augments, Ductile iron pipe fot self restraining jount can augment resistance of anti- skidding and anti- dropping, it can not bring movement in normal pressure for sippling water. It consists of flange, hoop, and bolt, the hoop is not closed, which welds on spigot of pipe, flange connects with hoop bevel, and connects with sockets by tailor made boll, when it is full of water and up to set pressure, it will generate longthways thrust at joint and bring trend of movement. The hoop welds on spigot, it can resisit this movement for hoop and flange on socket of pipe. So axial thrust is less than restrained strength, it does not bring movement under this circumstances. Self restrained joint has preferable effect of anti- skidding and anti- dropping, it can apply to abnormal pressure of supply water, it can solve some problems to ado t self- restrained joint. especially for bent pipe and pipeline that is not suitable to set.