Synoptic table of black pipe nipples
3/4" Black Malleable Pipe Long Short Nipple Applicable Water
- DISA from Denmark ,DJ AMF Japan,SINTOKOGIO Japan have been applied
into the malleable iron bushing to guarantee the quality of
- The material’s quality of the cast steel sample needs to be
examined by Oxford Instruments’s.
- High heat value natural gas annealing oven will be applied to
control the annealing operation and raise the material’s physical performance.
- After air-tightness test,each bushing will be in the condition of
- We can strictly control the calibre,parallelism, angle and tooth
type of the thread for every pipe fitting flange,because all of
them need to pass the plug gauge test.
What’s the different of ductile iron , gray iron and malleable cast iron ?
The characteristic of ductile iron is very tough, graphite is in
the form of a ball.
The feature of gray iron is very brittle , graphite is in the form of strip .
The particularity of malleable cast iron is graphite is a group of
flocculent tiles .
So the ductile iron is hardest , malleable cast iron is harder than gray iron .
Correlation table :
|Standard||Thread: ISO 7/1|
|Dimension||ISO 49, DIN 2950,EN10242|
|Chemical property||(C %2.4-2.9), (Si %1.4-1.9), (Mn %0.4-0.65), (P% <0.1), (S%
|Physical property||Tensile strength>=350Mpa,Elongation>=10% Hardness<=150HB|
|Type||Beaded with ribs or banded with ribs|
|Beaded without ribs or banded without ribs|
|Surface||Galvanized/ no galvanized|
|Model||Elbow, Tees, Crosses, Bends, Unions, Bushings, Lateral Braches,
Sockets, Nipples, Hexagon/Round, Caps, Plugs, Locknuts, Flanges
,Side Outlet Tees, Side Outlet Elbows and etc|
|Application||Suitable for pipe connect of steam, air, gas, oil and so on|
|Buyer’s drawings or designs are available|
|Package||Cartons without pallet|
|Cartons with pallet|
|Double woven bags|
Or as buyer’s requirements
|According to the quantities and specifications of each order|
|Normal delivery time is from 30 to 45 days after receiving the