Coupling

We are offering coupling.
Material specification&standards
universal couplings designed and manufactured under quality management system certificate to iso9001:1994.hydrostatic testing conform to standard of awwaansi c219.
Center sleeve
rilled steel to bs en 10025-1993 grade s275
end rings
ductile iron to bs en1563-1997
grade en-gjs-450-10
bolts
to bs en iso 898:1:1999 grade 4.8
nuts
to bs 970:part 1:s304 stainless steel
washers
to bs 970:part 1:s304 stainless steel
gasket
epdm to bs 681.1-1996
coating
the center sleeve and end rings are epoxy coated, whish is certified for portable water.
Working pressure:1.6mpa
testing pressure:2.1mpa
working temperature: 0 ℃ to +100℃
coupling caters for a total angular deflection of ±degrees.
Pipe pipe materials od range bolt lengh
nom (mm) (mm)
150mm ductile iron,pvcu,cast iron,
steel,cast iron met&imp ac 88.1-102.4 m12×175
3"
100mm ductile iron,pvcu,cast iron,
steel,cast iron met&imp ac 109.6-127.8 m12×175
4"
150mm ductile iron,pvcu,cast iron,
steel,cast iron met&imp ac 158.2-181.6 m12×200
6"
200mm ductile iron,pvcu,cast iron,
steel,cast iron met&imp ac 218.1-235.0 m12×200
8"
250mm ductile iron,pvcu,cast iron,
steel,cast iron met&imp ac 272.0-289.0 m12×215
10"
300mm ductile iron,pvcu,cast iron,
steel,cast iron met&imp ac 322.9-339.4 m12×215
12"